md5
(PHP 3, PHP 4 )
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. The hash is a 32-character hexadecimal number. 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.
Note: The optional raw_output parameter was added in PHP 5.0.0 and defaults to FALSE
Example 1. A md5() example
PHP Code:
<?php
$str = 'apple';
if (md5($str) === '1f3870be274f6c49b3e31a0c6728957f') {
echo "Would you like a green or red apple?";
exit;
}
?>
See also crc32(), md5_file(), and sha1().