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709 lines
30 KiB
HTML
709 lines
30 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>Deploying PHP 7</title>
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<meta name="description" content="Deploying PHP 7">
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<meta name="author" content="Rasmus Lerdorf">
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<meta name="apple-mobile-web-app-capable" content="yes" />
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<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
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<style>
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/*
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Not actually sure why this block isn't being picked up from the syntax highlight css
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If you change the syntax highlight theme, copy the first block here
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*/
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.reveal pre {
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width: 100%;
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}
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.reveal pre code {
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display: block;
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max-height: 600px;
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overflow-x: auto;
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padding: 0.5em;
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line-height: 125%;
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background: #fff;
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color: black;
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-webkit-text-size-adjust: none;
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}
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.reveal section img {
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box-shadow: none;
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border: none;
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}
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display: block;
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overflow-x: auto;
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padding: 0.5em;
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background: #000;
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color: #ddd;
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line-height: 125%;
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/* Left-align h3 and h4 if they are p elements */
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text-align: left;
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}
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h4.p {
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text-align: left;
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}
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/* and left-aligned but slightly indented bullet lists */
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.reveal ul {
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display: block;
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margin: 0 0 1em 3em;
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}
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/* Example titles */
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p.example {
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text-align: left;
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margin: 0 0 -0.5em 1em;
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font-weight: bold;
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}
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/* Example output style */
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pre.output {
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display: block;
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overflow-x: auto;
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padding: 0.5em;
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color: black;
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line-height: 200%;
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}
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<script type='text/javascript' src='/jquery.min.js'></script>
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<script>window.jQuery || document.write('<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js">\x3C/script>')</script>
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<script src="/highcharts.js"></script>
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<script>window.Highcharts || document.write('<script src="http://code.highcharts.com/highcharts.js">\x3C/script>')</script>
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<!--[if lt IE 9]>
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<script src="/reveal.js/lib/js/html5shiv.js"></script>
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<![endif]-->
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</head>
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<body>
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<div class="reveal">
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<!-- Any section element inside of this container is displayed as a slide -->
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<div class="slides">
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<section>
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<h1>Deploying PHP 7</h1>
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<h3>DPC</h3>
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<h3>João Pessoa</h3>
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<h3>August 26, 2016</h3>
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<a href="http://talks.php.net/expotec">http://talks.php.net/expotec</a><br><br>
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<p>Rasmus Lerdorf<br>
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<small><a href="http://twitter.com/@rasmus">@rasmus</a></small>
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</p>
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<aside class="notes">
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Notice: Undefined variable: notes in /home/rasmus/src/web/pres2/reveal_template.php on line 125
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</aside>
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</section>
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<section>
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<section id="php7_speed">
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<img src="/presentations/slides/intro/php7trans-200.png" width="" height="">
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<p class="p" style="font-size:1.1em;text-align:left;">✔ engine improvements</p>
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<ul>
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<li style="font-size: 1em;">100%+ performance gain on most real-world applications</li>
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<li style="font-size: 1em;">Lower memory usage, sometimes drastically lower</li>
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</ul>
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</section> </section>
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<section>
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<section id="php7perfdetail">
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<h1 style="text-align:center;">JIT?</h1>
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</section>
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<section id="php7perfdetail1">
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<p class="p" style="font-size:1.1em;">Improve CPU cache usage</p>
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<ul>
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<li style="font-size: 1em;list-style-type: none;">Step 1: Decrease overall data</li>
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<li style="font-size: 1em;list-style-type: none;">Step 2: Better data locality and less indirections</li>
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<li style="font-size: 1em;list-style-type: none;">Step 3: Save the world!</li>
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</ul>
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</section>
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<section id="php7perfdetail1">
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<ul>
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<li style="font-size: 1em;list-style-type: none;">zval size reduced from 24 to 16 bytes</li>
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<li style="font-size: 1em;list-style-type: none;">Hashtable size reduced from 72 to 56 bytes</li>
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<li style="font-size: 1em;list-style-type: none;">Hashtable bucket size reduced from 72 to 32 bytes</li>
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<li style="font-size: 1em;list-style-type: none;">Immutable array optimization</li>
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</ul>
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<pre><code data-trim style="font-size:1.1em;">$a = [];
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for($i=0; $i < 100000;$i++) {
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$a[] = ['abc','def','ghi','jkl','mno','pqr'];
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}
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echo memory_get_usage(true);
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// PHP 5.x 109M
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// PHP 7.0 42M no opcache
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// PHP 7.0 6M with opcache enabled</code></pre>
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</section>
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<section id="php7perfdetail2">
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<ul>
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<li style="font-size: 1em;list-style-type: none;">New memory allocator similar to jemalloc</li>
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<li style="font-size: 1em;list-style-type: none;">Faster hashtable iteration API</li>
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<li style="font-size: 1em;list-style-type: none;">Array duplication optimization</li>
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<li style="font-size: 1em;list-style-type: none;">PCRE JIT enabled by default</li>
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<li style="font-size: 1em;list-style-type: none;">Precomputed string hashes</li>
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<li style="font-size: 1em;list-style-type: none;">Fast ZPP (ZendParseParameters) implementation</li>
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<li style="font-size: 1em;list-style-type: none;">Faster stack-allocated zvals (instead of heap)</li>
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<li style="font-size: 1em;list-style-type: none;">Optimized VM calling</li>
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<li style="font-size: 1em;list-style-type: none;">Global register variables with gcc 4.8+</li>
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<li style="font-size: 1em;list-style-type: none;">plus hundreds of micro-optimizations</li>
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</ul>
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</section>
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<section id="php7perfdetail3">
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<p class="p" style="font-size:1.1em;">HugePage support in Opcache</p>
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<pre><code class="shell nohighlight" data-trim style="font-size:1.1em;">./configure --enable-huge-code-pages</code></pre>
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<pre><code class="ini" data-trim style="font-size:1.1em;">opcache.memory_consumption=256
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opcache.huge_code_pages=1</code></pre>
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<pre><code class="shell nohighlight" data-trim style="font-size:1.1em;">% sysctl -w vm.nr_hugepages=256
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% service php-fpm start
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% cat /proc/meminfo | grep Huge
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HugePages_Total: 256
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HugePages_Free: 231
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HugePages_Rsvd: 119
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HugePages_Surp: 0
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Hugepagesize: 2048 kB</code></pre>
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</section>
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<section id="php7detail4">
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<h1 style="text-align:center;">JIT?</h1>
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</section> </section>
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<section>
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<section id="drupalbench">
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<div id="drupalbench_container" class="stretch" style="margin: 0 auto"></div>
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<script src="presentations/slides/intro/nov3/drupalbench.js"></script>
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</section> </section>
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<section>
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<section id="wpbench">
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<div id="wpbench_container" class="stretch" style="margin: 0 auto"></div>
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<script src="presentations/slides/intro/nov3/wpbench.js"></script>
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</section>
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<section id="fdo">
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<p class="p" style="font-size:1.1em;text-align:center;">GCC Feedback-Directed Optimization (FDO)</p>
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<pre><code class="shell nohighlight" data-trim style="font-size:1em;">$ make clean
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$ make -j8 prof-gen
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...
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$ sapi/cgi/php-cgi -T 1000 /var/www/wordpress/index.php > /dev/null
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$ make prof-clean
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$ make -j8 prof-use</code></pre>
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</section>
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<section id="wpbench_fdo">
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<div id="wpbench_fdo_container" class="stretch" style="margin: 0 auto"></div>
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<script src="presentations/slides/intro/nov3/wpbench_fdo.js"></script>
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</section> </section>
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<section>
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<section id="moodlebench">
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<div id="moodlebench_container" class="stretch" style="margin: 0 auto"></div>
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<script src="presentations/slides/intro/nov3/moodlebench.js"></script>
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</section> </section>
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<section>
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<section id="wardrobebench">
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<div id="wardrobebench_container" class="stretch" style="margin: 0 auto"></div>
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<script src="presentations/slides/intro/nov3/wardrobebench.js"></script>
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</section> </section>
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<section>
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<section id="smembase">
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<div id="smembase_container" class="stretch" style="margin: 0 auto"></div>
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<script src="presentations/slides/intro/smembase.js"></script>
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</section> </section>
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<section>
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<section id="smemdrupal">
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<div id="smemdrupal_container" class="stretch" style="margin: 0 auto"></div>
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<script src="presentations/slides/intro/smemdrupal.js"></script>
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</section> </section>
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<section>
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<section id="smemwp">
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<div id="smemwp_container" class="stretch" style="margin: 0 auto"></div>
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<script src="presentations/slides/intro/smemwp.js"></script>
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</section> </section>
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<section>
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<section id="smemmoodle">
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<div id="smemmoodle_container" class="stretch" style="margin: 0 auto"></div>
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<script src="presentations/slides/intro/smemmoodle.js"></script>
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</section> </section>
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<section>
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<section id="php7">
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<img src="/presentations/slides/intro/php7trans-200.png" width="" height="">
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<p class="p" style="font-size:1.1em;text-align:left;">✔ engine improvements</p>
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<ul>
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<li style="font-size: 1em;">100%+ performance gain on most real-world applications</li>
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<li style="font-size: 1em;">Lower memory usage, sometimes drastically lower</li>
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</ul>
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</section>
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<section id="php7excep">
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<p class="p" style="font-size:1.1em;text-align:left;">✔ Exceptions on Fatals</p>
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<pre><code data-trim style="font-size:1.1em;">function call_method($obj) {
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$obj->method();
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}
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call_method(null);</code></pre>
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<pre><code class="shell nohighlight" data-trim style="font-size:0.85em;">Fatal error: Uncaught Error: Call to a member function method() on null in file:2
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Stack trace:
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#0 file(4): call_method(NULL)
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#1 {main}
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thrown in file on line 2</code></pre>
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<pre><code data-trim style="font-size:1.1em;">try {
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call_method(null);
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} catch (Error $e) {
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echo "Caught Exception: {$e->getMessage()}\n";
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}</code></pre>
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<pre><code class="shell nohighlight" data-trim style="font-size:0.85em;">Caught Exception: Call to a member function method() on null</code></pre>
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</section>
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<section id="php7hier">
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<p class="p" style="font-size:2em;text-align:center;">PHP 7 Exception Hierarchy</p>
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<br/>
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<ul>
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<li style="font-size: 1.5em;list-style-type: none;"><font color="ab5c5c">Throwable</font></li>
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<li style="font-size: 1.25em;margin-left: 2em;list-style-type: none;">➥ <font color="ab5c5c">Exception</font> implements Throwable</li>
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<li style="font-size: 1.25em;margin-left: 2em;list-style-type: none;">➥ <font color="ab5c5c">Error</font> implements Throwable</li>
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<li style="font-size: 1em;margin-left: 4em;list-style-type: none;">➥ <font color="ab5c5c">TypeError</font> extends Error</li>
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<li style="font-size: 1em;margin-left: 4em;list-style-type: none;">➥ <font color="ab5c5c">ParseError</font> extends Error</li>
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</ul>
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</section>
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<section id="php7ret">
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<p class="p" style="font-size:1.1em;text-align:left;">✔ Return Types</p>
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<pre><code data-trim style="font-size:1.1em;">function get_config(): array {
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return 42;
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}
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get_config();</code></pre>
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<pre><code class="shell nohighlight" data-trim style="font-size:0.9em;">Fatal error: Uncaught TypeError: Return value of get_config() must be
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of the type array, integer returned in file:2
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Stack trace:
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#0 file(4): get_config()
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#1 {main}
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thrown in file on line 2</code></pre>
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</section>
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<section id="php7STH">
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<p class="p" style="font-size:1.1em;text-align:left;">✔ Coercive Scalar Types</p>
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<pre><code data-trim style="font-size:1.1em;">function logmsg(string $msg, int $level, float $severity) {
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var_dump($msg); // string(1) "1"
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var_dump($level); // int(2)
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var_dump($severity); // float(3)
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}
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logmsg(1, "2.5 bananas", 3);</code></pre>
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<pre><code class="shell nohighlight" data-trim style="font-size:0.9em;">Notice: A non well formed numeric value encountered in file on line 2</code></pre>
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<p class="p" style="font-size:1.1em;text-align:left;">✔ Strict Scalar Types</p>
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<pre><code data-trim style="font-size:1.1em;">declare(strict_types=1);
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...
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logmsg(1, "2.5", 3);</code></pre>
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<pre><code class="shell nohighlight" data-trim style="font-size:0.9em;">Fatal error: Uncaught TypeError: Argument 1 passed to logmsg() must be of the
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type string, integer given, called in file on line 7 and defined in file:3
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Stack trace:
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#0 file(7): logmsg(1, '2.5', 3)
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#1 {main}
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thrown in file on line 2</code></pre>
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</section>
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<section id="php7anon">
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<p class="p" style="font-size:1.1em;text-align:left;">✔ Anonymous Classes</p>
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<pre><code data-trim style="font-size:1.2em;">return new class($controller) implements Page {
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public function __construct($controller) {
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/* ... */
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}
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/* ... */
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};
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class MyObject extends MyStuff {
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public function getInterface() {
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return new class implements MyInterface {
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/* ... */
|
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};
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}
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}</code></pre>
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||
</section>
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<section id="php7coalesce">
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||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Coalesce Operator</p>
|
||
<pre><code data-trim style="font-size:1.5em;">$a = NULL;
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$b = 0;
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$c = 2;
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echo $a ?? $b; // 0
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echo $c ?? $b; // 2
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echo $a ?? $b ?? $c; // 0
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echo $a ?? $x ?? $c; // 2</code></pre>
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||
</section>
|
||
<section id="Spaceship">
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||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Spaceship Operator</p>
|
||
<img src="/presentations/slides/intro/lego-php-astronaut.png" width="230" height="345">
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||
<pre><code data-trim style="font-size:1.1em;">function cmp_php5($a, $b) {
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||
return ($a < $b) ? -1 : (($a >$b) ? 1 : 0);
|
||
}
|
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|
||
function cmp_php7($a, $b) {
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||
return $a <=> $b;
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||
}</code></pre>
|
||
</section>
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<section id="php7cleanups">
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||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Removal of many deprecated features<BR/>
|
||
(Your PHP4 code will break!)</p>
|
||
<pre><code data-trim>- ext/ereg (use ext/pcre instead)
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||
- preg_replace() eval modifier (use preg_replace_callback() instead)
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- ext/mysql (use ext/mysqli or ext/pdo_mysql instead)
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||
- Assignment of new by reference
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- Scoped calls of non-static methods from incompatible $this context
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|
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- dl() in php-fpm
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- set_magic_quotes_runtime() and magic_quotes_runtime()
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- set_socket_blocking() (use stream_set_blocking() instead)
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- mcrypt_generic_end() (use mcrypt_generic_deinit() instead)
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- mcrypt_ecb, mcrypt_cbc, mcrypt_cfb and mcrypt_ofb
|
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(use mcrypt_encrypt() and mcrypt_decrypt() instead)
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- datefmt_set_timezone_id() and IntlDateFormatter::setTimeZoneID()
|
||
(use datefmt_set_timezone() or IntlDateFormatter::setTimeZone() instead)
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|
||
- xsl.security_prefs (use XsltProcessor::setSecurityPrefs() instead)
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- iconv.input_encoding, iconv.output_encoding, iconv.internal_encoding,
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mbstring.http_input, mbstring.http_output and mbstring.internal_encoding
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||
(use php.input_encoding, php.internal_encoding and php.output_encoding instead)
|
||
|
||
- $is_dst parameter of the mktime() and gmmktime() functions
|
||
- # style comments in ini files (use ; style comments instead)
|
||
- String category names in setlocale() (use LC_* constants instead)
|
||
- Unsafe curl file uploads (use CurlFile instead)
|
||
- PDO::PGSQL_ATTR_DISABLE_NATIVE_PREPARED_STATEMENT driver option
|
||
(use PDO::ATTR_EMULATE_PREPARES instead)
|
||
- CN_match and SNI_server_name stream context option (use peer_name instead)</code></pre>
|
||
</section>
|
||
<section id="php7reserved">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ New reserved words:</p>
|
||
<ul>
|
||
<li style="font-size: 1em;list-style-type: none;">bool</li>
|
||
<li style="font-size: 1em;list-style-type: none;">int</li>
|
||
<li style="font-size: 1em;list-style-type: none;">float</li>
|
||
<li style="font-size: 1em;list-style-type: none;">string</li>
|
||
<li style="font-size: 1em;list-style-type: none;">null</li>
|
||
<li style="font-size: 1em;list-style-type: none;">false</li>
|
||
<li style="font-size: 1em;list-style-type: none;">true</li>
|
||
<li style="font-size: 1em;list-style-type: none;">resource</li>
|
||
<li style="font-size: 1em;list-style-type: none;">object</li>
|
||
<li style="font-size: 1em;list-style-type: none;">mixed</li>
|
||
<li style="font-size: 1em;list-style-type: none;">numeric</li>
|
||
</ul>
|
||
</section>
|
||
<section id="php7num">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ 64-bit integer support on Windows</p>
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Cleanup edge-case integer overflow/underflow</p>
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Support for strings with length >= 2^31 bytes in 64 bit builds.</p>
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Parse error on invalid numeric literals</p>
|
||
<pre><code data-trim>$mask = 0855; // Parse error: Invalid numeric literal</code></pre>
|
||
</section>
|
||
<section id="php7UVS">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Uniform variable syntax</p>
|
||
<pre><code data-trim>// left-to-right
|
||
$this->$belongs_to['column']
|
||
// vs.
|
||
$this->{$belongs_to['column']}
|
||
|
||
// support missing combinations of operations
|
||
$foo()['bar']()
|
||
[$obj1, $obj2][0]->prop
|
||
getStr(){0}
|
||
|
||
// support nested ::
|
||
$foo['bar']::$baz
|
||
$foo::$bar::$baz
|
||
$foo->bar()::baz()
|
||
|
||
// support nested ()
|
||
foo()()
|
||
$foo->bar()()
|
||
Foo::bar()()
|
||
$foo()()
|
||
|
||
// support operations on arbitrary (...) expressions
|
||
(...)['foo']
|
||
(...)->foo
|
||
(...)->foo()
|
||
(...)::$foo
|
||
(...)::foo()
|
||
(...)()
|
||
|
||
// two more practical examples for the last point
|
||
(function() { ... })()
|
||
($obj->closure)()
|
||
|
||
// support all operations on dereferencable scalars
|
||
// (not very useful)
|
||
"string"->toLower()
|
||
[$obj, 'method']()
|
||
'Foo'::$bar</code></pre>
|
||
</section>
|
||
<section id="php7unicode">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Unicode Codepoint Escape Syntax</p>
|
||
<pre><code data-trim style="font-size:1.2em;">echo "\u{202E}Right-to-left text";
|
||
|
||
echo " \u{26BD}";</code></pre>
|
||
<pre class="output" style="font-size:1.2em;">Right-to-left text ⚽ </pre> <p class="p" style="font-size:1.1em;text-align:left;">✔ ICU IntlChar class added to intl extension</p>
|
||
</section>
|
||
<section id="php7csprng">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ CSPRNG</p>
|
||
<pre><code data-trim style="font-size:1.2em;">$int = random_int(-500, 500);
|
||
$bytes = random_bytes(10);
|
||
|
||
var_dump( $int );
|
||
var_dump( bin2hex($bytes) );</code></pre>
|
||
<pre class="output" style="font-size:1.2em;">int(348)
|
||
string(20) "9576ce9260bcaa4509b5"
|
||
</pre> </section> </section>
|
||
<section>
|
||
<section id="bc7">
|
||
<h1 style="text-align:center;">Top-5 Things that might bite you</h1>
|
||
<br/>
|
||
<br/>
|
||
<br/>
|
||
<p class="p" style="font-size:1.5em;text-align:center;">For the full list see</p>
|
||
<div align="center" style="font-size: 1.25em; color: ; text-align: center; margin-left: ; margin-right: ; margin-top: -0.75em; margin-bottom: ;"><a href="http://php.net/manual/en/migration70.php" target="">php.net/migration70</a></div>
|
||
</section>
|
||
<section id="bc7_1">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Left-to-right semantics for complicated expressions</p>
|
||
<pre><code class="php" data-trim style="font-size:1.1em;">$$foo['bar']['baz'] // interpreted as ($$foo)['bar']['baz']
|
||
$foo->$bar['baz'] // interpreted as ($foo->$bar)['baz']
|
||
$foo->$bar['baz']() // interpreted as ($foo->$bar)['baz']()
|
||
Foo::$bar['baz']() // interpreted as (Foo::$bar)['baz']()</code></pre>
|
||
<p class="p" style="font-size:0.8em;text-align:left;">To restore the previous behaviour add explicit curly braces:</p>
|
||
<pre><code class="php" data-trim style="font-size:1.1em;">${$foo['bar']['baz']}
|
||
$foo->{$bar['baz']}
|
||
$foo->{$bar['baz']}()
|
||
Foo::{$bar['baz']}()</code></pre>
|
||
<p class="p" style="font-size:0.8em;text-align:left;">Detection: phan or unit test failures</p>
|
||
</section>
|
||
<section id="bc7_2">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Removed support for /e (PREG_REPLACE_EVAL) modifier</p>
|
||
<pre><code class="php" data-trim style="font-size:1.1em;">echo preg_replace('/:-:(.*?):-:/e', '$this->pres->\\1', $text);</code></pre>
|
||
<p class="p" style="font-size:0.8em;text-align:left;">Change to:</p>
|
||
<pre><code class="php" data-trim style="font-size:1.1em;">echo preg_replace_callback(
|
||
'/:-:(.*?):-:/',
|
||
function($matches) {
|
||
return $this->pres->{$matches[1]}; // Careful!
|
||
},
|
||
$text);</code></pre>
|
||
<p class="p" style="font-size:0.8em;text-align:left;">Detection: grep, warnings in logs or unit test failures</p>
|
||
</section>
|
||
<section id="bc7_3">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">$HTTP_RAW_POST_DATA global removed</p>
|
||
<pre><code class="php" data-trim style="font-size:1em;">if (empty($GLOBALS['HTTP_RAW_POST_DATA']) &&
|
||
strpos($_SERVER['CONTENT_TYPE'], 'www-form-urlencoded') === false) {
|
||
$GLOBALS['HTTP_RAW_POST_DATA'] = file_get_contents("php://input");
|
||
}</code></pre>
|
||
<p class="p" style="font-size:0.8em;text-align:left;">Detection: grep, warnings in logs or unit test failures</p>
|
||
</section>
|
||
<section id="bc7_4">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">session.lazy_write enabled by default</p>
|
||
<pre><code class="ini" data-trim style="font-size:1.1em;">session.lazy_write = 0</code></pre>
|
||
<p class="p" style="font-size:0.8em;text-align:left;">Detection: Can cause out-of-band session read timing issues</p>
|
||
</section>
|
||
<section id="bc7_5">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Invalid octal literals now produce a parse error</p>
|
||
<pre><code class="php" data-trim style="font-size:1.1em;">echo 05678; // PHP 5.x outputs 375</code></pre>
|
||
<pre class="output" style="font-size:0.5em;">Parse error: Invalid numeric literal in file.php on line 2 </pre> <p class="p" style="font-size:0.8em;text-align:left;">Detecting parse errors is easy: php -l</p>
|
||
</section> </section>
|
||
<section>
|
||
<section id="deploy">
|
||
<h1 style="text-align:center;">Let's deploy it!</h1>
|
||
</section>
|
||
<section id="deploy0">
|
||
<p class="p" style="font-size:2em;text-align:left;">Atomic</p>
|
||
<p class="p" style="font-size:2em;text-align:left;">No performance hit</p>
|
||
<ul>
|
||
<li style="font-size: 1.5em;">No restarts</li>
|
||
<li style="font-size: 1.5em;">No LB removal</li>
|
||
<li style="font-size: 1.5em;">No thundering herd</li>
|
||
<li style="font-size: 1.5em;">Cache reuse</li>
|
||
</ul>
|
||
</section>
|
||
<section id="deploy1">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Must be able to serve two versions of the site concurrently!</p>
|
||
<img src="/presentations/slides/intro/atomic_deploy1.png" width="" height="">
|
||
</section>
|
||
<section id="deploy2">
|
||
<img src="/presentations/slides/intro/atomic_deploy2.png" width="" height="">
|
||
</section>
|
||
<section id="deploy3">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Requests that begin on DocumentRoot A must finish on A</p>
|
||
</section>
|
||
<section id="deploy4">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Set the DocumentRoot to symlink target!</p>
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Easy with nginx</p>
|
||
<pre><code class="ini" data-trim style="font-size:1.1em;">fastcgi_param DOCUMENT_ROOT $realpath_root</code></pre>
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Apache</p>
|
||
<div align="left" style="font-size: 1.25em; color: ; text-align: left; margin-left: 1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/mod_realdoc" target="">github.com/etsy/mod_realdoc</a></div>
|
||
</section>
|
||
<section id="deploy5">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Avoid hardcoding full paths</p>
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Watch your include_path setting</p>
|
||
<p class="p" style="font-size:1.1em;text-align:left;">incpath extension can resolve your include_path for you</p>
|
||
<div align="left" style="font-size: 1.25em; color: ; text-align: left; margin-left: 1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/etsy/incpath" target="">https://github.com/etsy/incpath</a></div>
|
||
</section>
|
||
<section id="deploy6">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">Version all static assets</p>
|
||
<p class="p" style="font-size:1.1em;text-align:left;">DB Schema changes need special care</p>
|
||
</section> </section>
|
||
<section>
|
||
<section id="prod_perc95">
|
||
<h2 margin-bottom="2em">PHP 7 in production</h2><br>
|
||
<img src="/presentations/slides/intro/perc95.png" align="center" width="882" height="465">
|
||
</section>
|
||
<section id="prod_cpu">
|
||
<img src="/presentations/slides/intro/cpu.png" align="center" width="882" height="465">
|
||
</section>
|
||
<section id="prod_mem">
|
||
<img src="/presentations/slides/intro/mem.png" align="center" width="882" height="465">
|
||
</section> </section>
|
||
<section>
|
||
<section id="php71">
|
||
<h1 style="text-align:center;">PHP 7.1</h1>
|
||
</section>
|
||
<section id="php71_void">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ void return type</p>
|
||
<pre><code data-trim style="font-size:1.1em;">function should_return_nothing(): void {
|
||
return 1; // Fatal error: A void function must not return a value
|
||
}</code></pre>
|
||
</section>
|
||
<section id="php71_nullable">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Nullable types</p>
|
||
<pre><code data-trim style="font-size:1.1em;">function answer(int $a, ?int $b): ?int {
|
||
if($a > $b) return $a;
|
||
else return null;
|
||
}</code></pre>
|
||
</section>
|
||
<section id="php71iterable">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Iterable pseudo-type</p>
|
||
<pre><code data-trim style="font-size:1.1em;">function foo(iterable $iterable) {
|
||
foreach ($iterable as $value) {
|
||
// ...
|
||
}
|
||
}
|
||
function bar(): iterable {
|
||
return [1, 2, 3];
|
||
}</code></pre>
|
||
</section>
|
||
<section id="php71neg">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Negative string offsets</p>
|
||
<pre><code data-trim style="font-size:1.1em;">$str='abcdef';
|
||
var_dump($str[-2]); // => string(1) "e"</code></pre>
|
||
</section>
|
||
<section id="php71list">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ List keys</p>
|
||
<pre><code data-trim style="font-size:1.1em;">list($first, $second, $third) = [1, 2, 3];
|
||
[$first, $second, $third] = [1, 2, 3];</code></pre>
|
||
</section>
|
||
<section id="php71arith">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Warn about invalid strings in arithmetic</p>
|
||
<pre><code data-trim style="font-size:1.1em;">$numberOfApples = "10 apples" + "5 pears";</code></pre>
|
||
<pre><code class="shell nohighlight" data-trim style="font-size:0.9em;">Notice: A non well formed numeric string encountered in example.php on line 2
|
||
Notice: A non well formed numeric string encountered in example.php on line 2</code></pre>
|
||
</section>
|
||
<section id="php71classconst">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Class constant visibility</p>
|
||
<pre><code data-trim style="font-size:1.2em;">class Token {
|
||
// Constants default to public
|
||
const PUBLIC_CONST = 0;
|
||
|
||
private const PRIVATE_CONST = 0;
|
||
protected const PROTECTED_CONST = 0;
|
||
public const PUBLIC_CONST_TWO = 0;</code></pre>
|
||
</section>
|
||
<section id="php71cleanups">
|
||
<p class="p" style="font-size:1.1em;text-align:left;">✔ Things that may break your code</p>
|
||
<ul>
|
||
<li style="font-size: 0.8em;margin-left: -1em;">new 'void' and 'iterable' keywords</li>
|
||
<li style="font-size: 0.8em;margin-left: -1em;">rand() and srand() are now aliased to mt_rand() and mt_srand()</li>
|
||
<li style="font-size: 0.8em;margin-left: -1em;">Calling a function with too few args is now an Error instead of a Warning</li>
|
||
<li style="font-size: 0.8em;margin-left: -1em;">Dropped support for sslv2 streams</li>
|
||
<li style="font-size: 0.8em;margin-left: -1em;">Dropped support for mcrypt</li>
|
||
</ul>
|
||
</section> </section>
|
||
<section>
|
||
<section id="thank_you">
|
||
<h2 style="text-align:center;">Thank You</h2>
|
||
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/rlerdorf/php7dev" target="">https://github.com/rlerdorf/php7dev</a></div>
|
||
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/rlerdorf/phan" target="">https://github.com/rlerdorf/phan</a></div>
|
||
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://bugs.php.net" target="">https://bugs.php.net</a></div>
|
||
<div align="left" style="font-size: 1.2em; color: ; text-align: left; margin-left: 2em; margin-right: ; margin-top: ; margin-bottom: ;"><a href=":-:url:-:" target="">http://talks.php.net/expotec</a></div>
|
||
<br/>
|
||
<br/>
|
||
<br/>
|
||
<p class="p" style="font-size:1.1em;">Report Bugs</p>
|
||
<p class="p" style="font-size:1.1em;">Useful bug reports, please!</p>
|
||
</section> </section>
|
||
</div>
|
||
|
||
</div>
|
||
|
||
<script src="/reveal.js/lib/js/head.min.js"></script>
|
||
<script src="/reveal.js/js/reveal.js"></script>
|
||
|
||
<script>
|
||
|
||
Reveal.initialize({
|
||
controls: true,
|
||
progress: true,
|
||
history: true,
|
||
center: true,
|
||
width: 1024,
|
||
height: 768,
|
||
|
||
transition: 'slide', // none/fade/slide/convex/concave/zoom
|
||
transitionSpeed: 'fast',
|
||
|
||
// Optional reveal.js plugins
|
||
dependencies: [
|
||
{ src: '/reveal.js/lib/js/classList.js', condition: function() { return !document.body.classList; } },
|
||
{ src: '/highlight.min.js', async: true, condition: function() { return !!document.querySelector( 'pre code' ); }, callback: function() { hljs.initHighlightingOnLoad(); } },
|
||
{ src: '/reveal.js/plugin/zoom-js/zoom.js', async: true },
|
||
{ src: '/reveal.js/plugin/notes/notes.js', async: true }
|
||
]
|
||
});
|
||
/* This draws the graph on the slide on a slidechanged event */
|
||
Reveal.addEventListener('slidechanged', function(event) {
|
||
var callback = "render_"+event.currentSlide.id;
|
||
if(typeof(window[callback])=="function") {
|
||
window[callback]();
|
||
}
|
||
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|
||
/* This draws the graph if we got here directly without coming from another slide */
|
||
Reveal.addEventListener('ready', function(event) {
|
||
var callback = "render_"+event.currentSlide.id;
|
||
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|
||
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|
||
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|
||
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|
||
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|
||
|
||
</body>
|
||
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|