md5() - string

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

Parameters : 
 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. 

Syntax

string md5
    ( string $str
   [, bool $raw_output = false
  ] )

Example

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

Output / Return Value

Limitations

Alternatives / See Also

Reference