PHP - random string generate in php

Below is very easy function to generate random string in php.

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function Password_genrator($length = 10) {     $characters = '0123456789!@#$%^&*abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';     $charactersLength = strlen($characters);     $randomString = '';     for ($i = 0; $i < $length; $i++) {         $randomString .= $characters[rand(0, $charactersLength - 1)];     }     return $randomString; }   echo Password_genrator();