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https://github.com/sigmasternchen/php-doc-en
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af6fdf16ab
This includes changelogs but also some paragraphs and notes which mention PHP 4. git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@347043 c90b9560-bf6c-de11-be94-00142212c4b1
46 lines
1.5 KiB
XML
46 lines
1.5 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<sect1 xml:id="function.include-once" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<title>include_once</title>
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<?phpdoc print-version-for="include_once"?>
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<para>
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The <literal>include_once</literal> statement includes and evaluates
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the specified file during the execution of the script.
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This is a behavior similar to the <function>include</function> statement,
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with the only difference being that if the code from a file has already
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been included, it will not be included again, and include_once returns &true;. As the name suggests,
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the file will be included just once.
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</para>
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<para>
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<literal>include_once</literal> may be used in cases where
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the same file might be included and evaluated more than once during a
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particular execution of a script, so in this case it may help avoid
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problems such as function redefinitions, variable value reassignments, etc.
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</para>
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<para>
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See the <function>include</function> documentation for information about
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how this function works.
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</para>
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</sect1>
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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:"~/.phpdoc/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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