- var_dump: documentation ( source)
- pack: documentation ( source)
- unpack: documentation ( source)
<?php
$textData = pack("N", 'wwwwwwwwwwwwwwwwsss');
var_dump($textData);
$textData = unpack("N",$textData);
var_dump($textData);
echo mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CFB);