[php]criptaggio wordlist in md5 e md5+seed

<?
$md5 = "";
$var=fopen("wordlist.txt","r");
$var2=fread($var,filesize("wordlist.txt"));
$linea = explode('\n',$var2);
for($a = 1;$a < 10;$a++){
$md5 = md5(md5($linea[$a])) & '\' & md5($linea[$a] & '\' & $linea[$a] & '\n';
}
fclose($var);
$b = fopen("md5.txt","w");
fwrite($b,$md5);
fclose($b);
?>

$md5 = md5(md5($linea[$a])) & '\' & md5($linea[$a] & '\' & $linea[$a] & '\n';