Notice: Undefined variable: password in pass.php on line 8
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<?php

function passGenerator($password_length) {
    $harfler="ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
    mb_substr($harfler,mt_rand(0,mb_strlen($harfler)-1),1);
    for ($i=1; $i<=$password_length; $i++)
    {
        $password.=mb_substr($harfler,mt_rand(0,mb_strlen($harfler)-1),1);
    }
    return $password;
}

echo passGenerator(9);

?>