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md5.xml
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md5.xml
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 71e12e2df7b0bcf0dc2743681b73790ac0d45ccc Maintainer: HonestQiao Status: ready -->
<!-- CREDITS: mowangjuanzi -->
<refentry xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://docbook.org/ns/docbook" xml:id="function.md5">
<refnamediv>
<refname>md5</refname>
<refpurpose>计算字符串的 MD5 散列值</refpurpose>
</refnamediv>
<refsynopsisdiv>
&warn.passwordhashing;
</refsynopsisdiv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>string</type><methodname>md5</methodname>
<methodparam><type>string</type><parameter>string</parameter></methodparam>
<methodparam choice="opt"><type>bool</type><parameter>binary</parameter><initializer>&false;</initializer></methodparam>
</methodsynopsis>
<para>
使用 <link xlink:href="&url.rfc;1321">RSA 数据安全公司的 MD5 消息摘要算法</link> 计算
<parameter>string</parameter> 的 MD5 散列值,并返回该散列值。
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>string</parameter></term>
<listitem>
<para>
要计算的字符串。
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>binary</parameter></term>
<listitem>
<para>
如果可选的 <parameter>binary</parameter> 被设置为 &true;,那么 md5 摘要将以 16 字符长度的原始二进制格式返回。
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
以 32 字符的十六进制数形式返回散列值。
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>md5</function> 示例</title>
<programlisting role="php">
<![CDATA[
<?php
$str = 'apple';
if (md5($str) === '1f3870be274f6c49b3e31a0c6728957f') {
echo "Would you like a green or red apple?";
}
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>hash</function></member>
<member><function>password_hash</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->