Como desarrollar un Identificador de hash con php

<?php

$hash = "66f5fe9650359894bfd46e7ff6fcf322";


//ipb,md5,md5(md5),ntlm.Radminv2,md4,ripemd128, tiger128,3 , tiger128,4 , haval128,3 , haval128,4 , haval128,5

for($k=65;$k<=122;$k++){
for($j=65;$j<=122;$j++){
for($l=65;$l<=122;$l++){
for($m=65;$m<=122;$m++){
$token = chr($k).chr($j).chr($l).chr($m);
$md5 = hash('md5',$token);
$md52 = hash('md5',$md5);
$md4 = hash('md4',$token);
$ripemd128 = hash('ripemd128',$token);
$tiger1283 = hash('tiger128,3',$token);
$tiger1284 = hash('tiger128,4',$token);
$haval1283 = hash('haval128,3',$token);
$haval1284 = hash('haval128,4',$token);
$haval1285 = hash('haval128,5',$token);

if($md5 == $hash ||
$md52 == $hash ||
$md4 == $hash ||
$ripemd128 == $hash ||
$tiger1283 == $hash ||
$tiger1284 == $hash ||
$haval1283 == $hash ||
$haval1284 == $hash ||
$haval1285 == $hash ){
echo $md52." -> ".$token.chr(10);
echo $md4." -> ".$token.chr(10);
echo $ripemd128." -> ".$token.chr(10);
echo $tiger1283." -> ".$token.chr(10);
echo $tiger1284." -> ".$token.chr(10);
echo $haval1283." -> ".$token.chr(10);
echo $haval1284." -> ".$token.chr(10);
echo $haval1285." -> ".$token.chr(10);
exit;
}
}
}
}
}
?>