mirror of
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648 lines
24 KiB
HTML
648 lines
24 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>25 Years of PHP</title>
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<meta name="description" content="25 Years of PHP">
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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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<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
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<link rel="stylesheet" href="/styles/xcode.css">
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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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display: block;
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max-height: 600px;
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line-height: 125%;
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background: #fff;
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}
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/* Left-align h3 and h4 if they are p elements */
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h3.p {
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text-align: left;
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/* and left-aligned but slightly indented bullet lists */
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}
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/* Example output style */
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document.getElementsByTagName( 'head' )[0].appendChild( link );
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<!-- Needed for charts to work. Fall back to network if no local copy -->
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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>25 Years of PHP</h1>
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<h3>WeAreDevelopers</h3>
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<h3>Berlin</h3>
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<h3>June 7, 2019</h3>
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<a href="http://talks.php.net/devs19">http://talks.php.net/devs19</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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</aside>
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</section>
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<section data-background-color="#000000">
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<section id="s">
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<img src="/presentations/slides/intro/greenland_map.png" align="center" width="" height="">
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</section>
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<section id="s1">
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<img src="/presentations/slides/intro/greenland_edge.jpg" align="center" width="" height="">
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</section>
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<section id="s2">
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<img src="/presentations/slides/intro/greenland_boots.jpg" align="center" width="" height="">
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</section>
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<section id="s3">
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<img src="/presentations/slides/intro/greenland_box.jpg" align="center" width="" height="">
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</section>
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<section id="s4">
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<img src="/presentations/slides/intro/greenland_dogsled.jpg" align="center" width="" height="">
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</section>
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<section id="s5">
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<img src="/presentations/slides/intro/greenland_house.jpg" align="center" width="" height="">
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</section>
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<section id="s6">
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<img src="/presentations/slides/intro/greenland_summer.jpg" align="center" width="" height="">
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</section>
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<section id="s7">
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<img src="/presentations/slides/intro/greenland_tech1.jpg" align="center" width="" height="">
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</section>
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<section id="s8">
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<img src="/presentations/slides/intro/greenland_tech2.jpg" align="center" width="" height="">
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</section>
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<section id="s9">
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<img src="/presentations/slides/intro/greenland_tech3.jpg" align="center" width="" height="">
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</section> </section>
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<section>
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<section id="hist_80s">
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<h1 style="text-align:center;text-transform:none">1980s</h1>
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<img src="/presentations/slides/intro/timex.jpg" align="center" width="" height="">
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</section>
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<section id="hist_80s_1">
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<img src="/presentations/slides/intro/vic20.jpg" align="center" width="" height="">
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</section>
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<section id="hist_80s_2">
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<img src="/presentations/slides/intro/hayes.jpg" align="center" width="" height="">
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</section>
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<section id="hist_80s_3">
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<img src="/presentations/slides/intro/Zmodem.gif" align="center" width="" height="">
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</section> </section>
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<section>
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<section id="hist_90s">
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<h1 style="text-align:center;text-transform:none">1990s</h1>
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<img src="/presentations/slides/intro/gopher.gif" align="center" width="" height="">
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</section>
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<section id="hist_90s_1">
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<img src="/presentations/slides/intro/mosaic.jpg" align="center" width="" height="">
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</section> </section>
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<section>
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<section id="hist_1993">
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<h3 class="p" style="text-align:center;">1993</h3>
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<pre><code class="C" data-trim style="font-size:0.8em;" >#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#define ishex(x) (((x) >= '0' && (x) <= '9') || ((x) >= 'a' && \
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(x) <= 'f') || ((x) >= 'A' && (x) <= 'F'))
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int htoi(char *s) {
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int value;
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char c;
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c = s[0];
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if(isupper(c)) c = tolower(c);
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value=(c >= '0' && c <= '9' ? c - '0' : c - 'a' + 10) * 16;
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c = s[1];
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if(isupper(c)) c = tolower(c);
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value += c >= '0' && c <= '9' ? c - '0' : c - 'a' + 10;
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return(value);
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}
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void main(int argc, char *argv[]) {
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char *params, *data, *dest, *s, *tmp;
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char *name, *age;
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puts("Content-type: text/html\r\n");
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puts("<HTML><HEAD><TITLE>Form Example</TITLE></HEAD>");
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puts("<BODY><H1>My Example Form</H1>");
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puts("<FORM action=\"form.cgi\" method=\"GET\">");
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puts("Name: <INPUT type=\"text\" name=\"name\">");
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puts("Age: <INPUT type=\"text\" name=\"age\">");
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puts("<BR><INPUT type=\"submit\">");
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puts("</FORM>");
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data = getenv("QUERY_STRING");
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if(data && *data) {
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params = data; dest = data;
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while(*data) {
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if(*data=='+') *dest=' ';
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else if(*data == '%' && ishex(*(data+1))&&ishex(*(data+2))) {
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*dest = (char) htoi(data + 1);
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data+=2;
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} else *dest = *data;
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data++;
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dest++;
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}
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*dest = '\0';
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s = strtok(params,"&");
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do {
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tmp = strchr(s,'=');
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if(tmp) {
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*tmp = '\0';
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if(!strcmp(s,"name")) name = tmp+1;
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else if(!strcmp(s,"age")) age = tmp+1;
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}
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} while(s=strtok(NULL,"&"));
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printf("Hi %s, you are %s years old\n",name,age);
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}
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puts("</BODY></HTML>");
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}</code></pre>
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</section> </section>
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<section>
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<section id="hist_1993_2">
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<h3 class="p" style="text-align:center;">1993</h3>
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<pre><code class="Perl" data-trim >use CGI qw(:standard);
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print header;
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print start_html('Form Example'),
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h1('My Example Form'),
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start_form,
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"Name: ", textfield('name'),
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p,
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"Age: ", textfield('age'),
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p,
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submit,
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end_form;
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if(param()) {
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print "Hi ",em(param('name')),
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"You are ",em(param('age')),
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" years old";
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}
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print end_html;</code></pre>
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</section> </section>
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<section>
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<section id="hist_1994">
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<h3 class="p" style="text-align:center;">1994-1995</h3>
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<pre><code class="PHP" data-trim ><html><head><title>Form Example</title></head>
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<body><h1>My Example Form</h1>
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<form action="form.phtml" method="POST">
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Name: <input type="text" name="name">
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Age: <input type="text" name="age">
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<br><input type="submit">
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</form>
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<?if($name):?>
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Hi <?echo $name?>, you are <?echo $age?> years old
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<?endif?>
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</body></html></code></pre>
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</section> </section>
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<section>
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<h2>C API for the Web</h2>
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<pre><code class="C" data-trim >void Cos(void) {
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Stack *s;
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char temp[64];
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s = Pop();
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if(!s) {
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Error("Stack error in cos");
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return;
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}
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sprintf(temp,"%f",cos(s->douval));
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Push(temp,DNUMBER);
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}</code></pre>
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<h4 class="p">And you could then use it like this:</h4>
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<pre><code class="nohighlight" data-trim ><html><head><title>Cos Example</title></head>
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<body><h1>Cos Example</h1>
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<?echo Cos($input)>
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</body></html></code></pre>
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<aside class="notes"><br />
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Actually the very first markup used html comments<br />
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<? ... > came shortly after.<br />
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Note the lack of the closing '?'<br />
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BUT nobody was interested!<br />
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</aside>
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</section>
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<section>
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<h3 class="p">Focus on the Ecosystem</h3>
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<ul>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">LAMP wasn't an accident</li>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">Robustness, Performance and Security</li>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;"><font color="ff2233">♥</font> shared hosting ISPs</li>
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</ul>
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<br/>
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<h3 class="p">Scale</h3>
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<ul>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">Scaling up is expected</li>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">Scaling down is surprisingly hard</li>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">Doing both is rocket science</li>
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</ul>
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</section>
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<section>
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<h3 class="p">Performance</h3>
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<ul>
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<li style="font-size: 1.1em;margin-left: 1em;list-style-type: bullet;">mod_php</li>
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<li style="font-size: 1.1em;margin-left: 1em;list-style-type: bullet;">shared-nothing perfect sandbox model</li>
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</ul>
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<h3 class="p">Robustness</h3>
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<ul>
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<li style="font-size: 1.1em;margin-left: 1em;list-style-type: bullet;">SQL LIMIT clause</li>
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<li style="font-size: 1.1em;margin-left: 1em;list-style-type: bullet;">Promote Prefork shared-nothing model</li>
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</ul>
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<h3 class="p">Security</h3>
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<ul>
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<li style="font-size: 1.1em;margin-left: 1em;list-style-type: bullet;">max_execution_time</li>
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<li style="font-size: 1.1em;margin-left: 1em;list-style-type: bullet;">memory_limit</li>
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<li style="font-size: 1.1em;margin-left: 1em;list-style-type: bullet;">safe mode</li>
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</ul>
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</section>
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<section>
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<section id="omg">
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<h3 class="p">What was he thinking?</h3>
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<ul>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">Case insensitive function names?</li>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">Naming inconsistencies?</li>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">What's with the $ signs?</li>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">Globals?</li>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">register_globals?</li>
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<li style="font-size: 1.1em;margin-left: 2em;list-style-type: none;">magic_quotes?</li>
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</ul>
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</section>
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<section id="omg1">
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<h3 class="p">OMGWTFBBQ?</h3>
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<pre><code data-trim style="font-size:1.6em;" >array_search($needle, $haystack);
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strstr($haystack, $needle);
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in_array($needle, $haystack);
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substr_count($haystack, $needle);
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array_key_exists($needle, $haystack);
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strchr($haystack, $needle);</code></pre>
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</section> </section>
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<section>
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<section id="wpbench">
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|
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<div id="wpbench_container" class="stretch" style="margin: 0 auto"></div>
|
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<script src="presentations/slides/intro/wp2018.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/smemwp2018.js"></script>
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</section> </section>
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<section>
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<section id="supported">
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<h2 style="text-align:center;">Version Support</h2>
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<img src="http://php.net/images/supported-versions.php" align="center" width="" height="">
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<font size="6em">
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<table align="left" width="60%" border="0" style="margin-left: 1em;"><tr>
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<td bgcolor="#90C090"><span style="font-size: 1em;">Active Support</span>
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</td> <td ><span style="">Regular releases and security fixes</span>
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</td></tr>
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<tr>
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<td bgcolor="#F09030"><span style="font-size: 1em;">Security Fixes</span>
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</td> <td ><span style="">Only security fixes</span>
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</td></tr>
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<tr>
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<td bgcolor="F03030"><span style="font-size: 1em;">End of Life</span>
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</td> <td ><span style="">No longer supported</span>
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</td></tr>
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</table></font><br />
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</section> </section>
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<section>
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<section id="php74">
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<h1 style="text-align:center;">PHP 7.4</h1>
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</section>
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<section id="php74_typedprop">
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<p class="p" style="font-size:1.1em;text-align:left;">Typed Properties</p>
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<pre><code data-trim style="font-size:1.1em;" >class User {
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public int $id;
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public string $name;
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public function __construct(int $id, string $name) {
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$this->id = $id;
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$this->name = $name;
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}
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}</code></pre>
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</section>
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<section id="php74_arrow">
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<p class="p" style="font-size:1.1em;text-align:left;">Arrow Functions</p>
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<pre><code data-trim style="font-size:1.1em;" >$cb = function ($x) use ($y) {
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return $x + $y;
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};
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$cb = fn($x) => $x + $y;</code></pre>
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</section>
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<section id="php74_serialize">
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<p class="p" style="font-size:1.1em;text-align:left;">__serialize/__unserialize</p>
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<pre><code data-trim style="font-size:1.1em;" >class Test {
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public $prop;
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public function __serialize() {
|
|
return ['prop' => $this->prop];
|
|
}
|
|
public function __unserialize(array $data) {
|
|
$this->prop = $data['prop'];
|
|
}
|
|
}</code></pre>
|
|
</section>
|
|
<section id="null_coalesce_assign">
|
|
<p class="p" style="font-size:1em;text-align:left;">Null Coalescing Assignment Operator</p>
|
|
<pre><code data-trim style="font-size:1em;" >$this->config['value'] = $this->config['value'] ?? 'default_value';
|
|
$this->config['value'] ??= 'default_value';</code></pre>
|
|
</section>
|
|
<section id="weakref">
|
|
<p class="p" style="font-size:1em;text-align:left;">Weak References</p>
|
|
<pre><code data-trim style="font-size:1em;" >$std = new stdClass;
|
|
$wr = WeakReference::create($std);</code></pre>
|
|
</section>
|
|
<section id="php74_preload">
|
|
<p class="p" style="font-size:1.8em;text-align:center;">Opcache Preloading</p>
|
|
<ul>
|
|
<li>Loads userspace code at server startup as if it was part of core PHP</li>
|
|
<li>Trades some flexibility for performance</li>
|
|
<li>Inspired by the “Class Data Sharing” feature in Java's Hotspot VM</li>
|
|
</ul>
|
|
</section>
|
|
<section id="php74_preload1">
|
|
<p class="p" style="font-size:1em;text-align:left;">Without Opcache Preloading</p>
|
|
<pre><code data-trim style="font-size:1.1em;" >class A {
|
|
function __construct() {
|
|
echo "A";
|
|
}
|
|
}</code></pre>
|
|
<pre><code data-trim style="font-size:1em;" >spl_autoload_register('__load');
|
|
function __load($c) {
|
|
echo "Autoloader called for $c\n";
|
|
require "/home/rasmus/".strtolower($c).".php";
|
|
}
|
|
|
|
new A;</code></pre>
|
|
<pre><code class="shell nohighlight" data-trim style="font-size:1.1em;" >$ php script.php
|
|
Autoloader called for A
|
|
A</code></pre>
|
|
</section>
|
|
<section id="php74_preload2">
|
|
<p class="p" style="font-size:1em;text-align:left;">With Opcache Preloading</p>
|
|
<pre><code data-trim style="font-size:1em;" >function preload($filename) {
|
|
if (!opcache_compile_file($filename)) {
|
|
trigger_error("Preloading Failed", E_USER_ERROR);
|
|
}
|
|
}
|
|
|
|
preload("/home/rasmus/a.php");</code></pre>
|
|
<pre><code class="shell nohighlight" data-trim style="font-size:1.1em;" >$ php -d opcache.preload=preload.php script.php
|
|
A</code></pre>
|
|
</section>
|
|
<section id="ffi">
|
|
<p class="p" style="font-size:1em;text-align:left;">FFI - Foreign Function Interface</p>
|
|
<pre><code data-trim style="font-size:1em;" >// create FFI object, loading libc and exporting function printf()
|
|
$ffi = FFI::cdef(
|
|
"int printf(const char *format, ...);",
|
|
"libc.so.6");
|
|
// call C printf()
|
|
$ffi->printf("Hello %s!\n", "world");</code></pre>
|
|
</section>
|
|
<section id="ffi_example">
|
|
<pre><code data-trim style="font-size:1em;" ><?php
|
|
$ffi = FFI::load("php_gifenc.h");
|
|
|
|
$w = 240; $h = 180;
|
|
$cols = $ffi->new("uint8_t[12]");
|
|
/* 4 colours: 000000, FF0000, 00FF00, 0000FF */
|
|
$cols[3] = 0xFF; $cols[7] = 0xFF; $cols[11] = 0xFF;
|
|
|
|
$gif = $ffi->ge_new_gif("test.gif", $w, $h, $cols, 2, 0);
|
|
|
|
for($i = 0; $i < 16; $i++) {
|
|
for ($j = 0; $j < $w*$h; $j++) {
|
|
$gif->frame[$j] = ($i*6 + $j) / 12 % 8;
|
|
}
|
|
echo "Add frame $i\n";
|
|
$ffi->ge_add_frame($gif, 5);
|
|
}
|
|
$ffi->ge_close_gif($gif);</code></pre>
|
|
</section>
|
|
<section id="ffi_example_header">
|
|
<pre><code data-trim style="font-size:1em;" >#define FFI_SCOPE "gifenc"
|
|
#define FFI_LIB "libgifenc.so"
|
|
|
|
typedef struct ge_GIF {
|
|
uint16_t w, h;
|
|
int depth;
|
|
int fd;
|
|
int offset;
|
|
int nframes;
|
|
uint8_t *frame, *back;
|
|
uint32_t partial;
|
|
uint8_t buffer[0xFF];
|
|
} ge_GIF;
|
|
|
|
ge_GIF *ge_new_gif(
|
|
const char *fname, uint16_t width, uint16_t height,
|
|
uint8_t *palette, int depth, int loop
|
|
);
|
|
void ge_add_frame(ge_GIF *gif, uint16_t delay);
|
|
void ge_close_gif(ge_GIF* gif);</code></pre>
|
|
</section>
|
|
<section id="ffi_example_output">
|
|
<img src="/presentations/slides/intro/test.gif" align="center" width="240" height="180">
|
|
</section> </section>
|
|
<section data-background-color="#000000">
|
|
<section id="j">
|
|
<img src="/presentations/slides/intro/carl1.jpg" align="center" width="533" height="800">
|
|
</section>
|
|
<section id="j1">
|
|
<img src="/presentations/slides/intro/carl2.jpg" align="center" width="" height="">
|
|
</section>
|
|
<section id="j2">
|
|
<img src="/presentations/slides/intro/carl_linuxtag.jpg" align="center" width="" height="">
|
|
</section>
|
|
<section id="j3">
|
|
<img src="/presentations/slides/intro/carl_centipede.jpg" align="center" width="" height="">
|
|
</section>
|
|
<section id="j4">
|
|
<img src="/presentations/slides/intro/tridge.jpg" align="center" width="" height="">
|
|
</section>
|
|
<section id="j5">
|
|
<img src="/presentations/slides/intro/roorkee.jpg" align="center" width="" height="">
|
|
</section>
|
|
<section id="j6">
|
|
<img src="/presentations/slides/intro/arthurcclarke.jpg" align="center" width="" height="">
|
|
</section> </section>
|
|
<section>
|
|
<section id="sahana0">
|
|
<img src="/presentations/slides/intro/slideshow_images/sahana3.png" align="center" width="1000" height="720">
|
|
</section>
|
|
<section id="sahana1">
|
|
<img src="/presentations/slides/intro/slideshow_images/sahana_final.png" align="center" width="1000" height="720">
|
|
</section> </section>
|
|
<section>
|
|
<h3 class="p" style="text-align:center;">Work on things that matter (to you)</h3>
|
|
</section>
|
|
<section>
|
|
<img src="/presentations/slides/intro/lovehack-white-1000.png" align="center" width="1001" height="421">
|
|
</section>
|
|
<section>
|
|
<section id="thank_you">
|
|
<h2 style="text-align:center;">Thank You</h2>
|
|
<div align="left" style="font-size: 1em; color: ; text-align: left; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href=":-:url:-:" target="">http://talks.php.net/devs19</a></div>
|
|
<div align="left" style="font-size: 1em; color: ; text-align: left; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/phan/phan" target="">https://github.com/phan/phan</a></div>
|
|
<div align="left" style="font-size: 1em; color: ; text-align: left; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://github.com/adsr/phpspy" target="">https://github.com/adsr/phpspy</a></div>
|
|
<div align="left" style="font-size: 1em; color: ; text-align: left; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="http://php.net/migration73" target="">http://php.net/migration73</a></div>
|
|
<div align="left" style="font-size: 1em; color: ; text-align: left; margin-left: -1em; margin-right: ; margin-top: ; margin-bottom: ;"><a href="https://bugs.php.net" target="">https://bugs.php.net</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 },
|
|
{ src: '/reveal.js/plugin/line-numbers/line-numbers.js' }
|
|
]
|
|
});
|
|
/* 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]();
|
|
}
|
|
} );
|
|
/* 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;
|
|
if(typeof(window[callback])=="function") {
|
|
window[callback]();
|
|
}
|
|
} );
|
|
</script>
|
|
|
|
</body>
|
|
</html>
|