PHP Manual
Prev		Next

md5

(PHP 3, PHP 4, PHP 5)

md5 -- Calculate the md5 hash of a string

Description

string md5 ( string str [, bool raw_output] )

Calculates the MD5 hash of str using the RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash.

str: The string.
raw_output: If the optional raw_output is set to TRUE, then the md5 digest is instead returned in raw binary format with a length of 16. Defaults to FALSE.

Returns the hash as a 32-character hexadecimal number.

Version	Description
5.0.0	The `raw_output` parameter was added.

Example 1. A md5() example


<?php
$str = 'apple';

if (md5($str) === '1f3870be274f6c49b3e31a0c6728957f') {
    echo "Would you like a green or red apple?";
    exit;
}
?>

Prev	Home	Next
md5_file	Up	metaphone