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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.7 $ -->
<!-- splitted from ./en/functions/strings.xml, last change in rev 1.2 -->
<refentry id="function.md5-file">
<refnamediv>
<refname>md5_file</refname>
<refpurpose>Calculates the md5 hash of a given file</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>string</type><methodname>md5_file</methodname>
<methodparam><type>string</type><parameter>filename</parameter></methodparam>
<methodparam choice='opt'><type>bool</type><parameter>raw_output</parameter></methodparam>
</methodsynopsis>
<para>
Calculates the MD5 hash of the file specified by the
<parameter>filename</parameter> parameter using the
<ulink url="&url.rfc;1321">RSA Data Security, Inc.
MD5 Message-Digest Algorithm</ulink>, and returns that hash.
The hash is a 32-character hexadecimal number. If the optional
<parameter>raw_output</parameter> is set to &true;, then the md5 digest
is instead returned in raw binary format with a length of 16.
</para>
<note>
<simpara>
The optional <parameter>raw_output</parameter> parameter was added in
PHP 5.0.0 and defaults to &false;
</simpara>
</note>
<para>
This function has the same purpose of the command line utility
md5sum.
</para>
<para>
See also <function>md5</function>,
<function>crc32</function>, and
<function>sha1_file</function>.
</para>
</refsect1>
</refentry>
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sgml-default-dtd-file:"../../../../manual.ced"
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