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38 lines
1.1 KiB
XML
38 lines
1.1 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- EN-Revision: 161dde4fe721309398dd324edbf02aec409f127b Maintainer: mowangjuanzi Status: ready -->
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<sect1 xml:id="language.types.void">
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<title>Void</title>
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<para>
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<type>void</type> 是仅用于返回类型,表示函数不返回值,但该函数仍可能会终止。因此,它不能成为<link
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linkend="language.types.type-system.composite.union">联合类型</link>声明的一部分。自 PHP 7.1.0 起可用。
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</para>
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<note>
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<simpara>
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即使函数的返回类型是 <type>void</type>,但仍然可以返回值,但值只能始终为 &null;。
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</simpara>
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</note>
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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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