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Mehdi Achour
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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@166233 c90b9560-bf6c-de11-be94-00142212c4b1
124 lines
4.0 KiB
XML
Executable File
124 lines
4.0 KiB
XML
Executable File
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.3 $ -->
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<chapter id="faq.migration5">
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<title>Migrating from PHP 4 to PHP 5</title>
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<titleabbrev>Migrating from PHP 4 to PHP 5</titleabbrev>
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<para>
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This faq section will help you migrate from PHP 4 to PHP 5.
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</para>
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<qandaset>
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<qandaentry id="faq.migration5.php45">
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<question>
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<para>
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Migrating from PHP 4 to PHP 5
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</para>
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</question>
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<answer>
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<para>
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Although PHP 5 offers many new features, it's designed to be as
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compatible with earlier versions of PHP as possible with little
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functionality being broken in the process.
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</para>
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<para>
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Be sure to read the appropriate <link linkend="migration5">PHP 5
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migration appendix</link> of this manual as it contains even more
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information on the topic of migrating to PHP 5.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.migration5.mysql">
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<question>
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<para>
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Does MySQL work in PHP 5? It seemed to have disappeared.
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</para>
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</question>
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<answer>
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<para>
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<link linkend="ref.mysql">MySQL</link> is supported with the only
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change being that MySQL support is no longer enabled by
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<emphasis>default</emphasis> in PHP 5. This essentially means that
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PHP doesn't include the <option role="configure">--with-mysql</option>
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option in the <link linkend="configuration">configure</link> line so
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that you must now manually do this when compiling PHP. Windows users will
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edit &php.ini; and enable the <filename>php_mysql.dll</filename> DLL as
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in PHP 4 no such DLL existed, it was simply built into your Windows
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PHP binaries.
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</para>
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<para>
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Also, the MySQL client libraries are no longer bundled with PHP. More
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details on this topic are covered in
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<link linkend="faq.databases.mysql.php5">the following FAQ</link> and
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be sure to read the <link linkend="ref.mysql">MySQL section</link>
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for details on installing MySQL. An example configure line would be
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<option role="configure">--with-mysql=/usr</option> while Windows users
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will need the <filename>libmySQL.dll</filename> available to the system.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.migration5.oop">
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<question>
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<para>
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I hear PHP 5 has an entirely new OOP model, will my existing OOP code
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work? Where do I find information on these new OOP features?
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</para>
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</question>
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<answer>
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<para>
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The main change in PHP 5 is to the OOP model as PHP 5 now uses
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the <emphasis>Zend Engine 2.0</emphasis>. The <link
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linkend="ini.zend.ze1-compatibility-mode">
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zend.ze1_compatibility_mode</link> directive enables compatability
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with the Zend Engine 1.0 (PHP 4).
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</para>
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<para>
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The new OOP model is documented in the <link linkend="language.oop5">
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OOP language reference</link> and <link linkend="migration5.oop">OOP
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migration appendix</link> sections.
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</para>
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</answer>
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</qandaentry>
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<qandaentry id="faq.migration5.changes">
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<question>
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<para>
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So besides the new OOP model, what else has changed in PHP 5? Also, is
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there a PHP 5 specific version of the PHP manual?
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</para>
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</question>
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<answer>
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<para>
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Few other changes exist, see the <link linkend="migration5">migration
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5 appendix</link> for details. There won't be a PHP 5 specific
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version of the manual as the bulk of PHP remains the same.
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</para>
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</answer>
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</qandaentry>
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</qandaset>
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</chapter>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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