how can i make it random?

Hi

I have this code that saves images. How can i make it so that instead of the original name it just randoms a number? so instead of "name.extension" it will be "randomnumber.extension" ?

$tmp = download_url( $img );

                preg_match('/[^\?]+\.(jpg|JPG|jpe|JPE|jpeg|JPEG|gif|GIF|png|PNG)/', $img, $matches);
              
                $newfn = str_replace(array("%2B", "%52", "%20", "%5"), "B", basename($matches[0]));
              
                $oofnm = basename($matches[0]);
              
                if($newfn != $oofnm) {              
              
                    $newfn2 = str_replace(array(".jpg", ".png", ".gif"), "", $newfn);

                    $tmppath = pathinfo( $tmp );                                                        // extract path parts
                    $newpth = $tmppath['dirname'] . "/". $newfn2 . "." . $tmppath['extension']; 

                    rename($tmp, $newpth);                                                                 // renames temp file on server
                    $tmp = $newpth;                 
                }

                $file_array['name'] = $newfn;
                $file_array['tmp_name'] = $tmp;

                // If error storing temporarily, unlink
                if ( is_wp_error( $tmp ) ) {
                    @unlink($file_array['tmp_name']);
                    $file_array['tmp_name'] = '';
                    continue;
                }

PHP:

 

Use rand() or any other rand function.

 

okay but where? i cant for my life find where in the code i should do it because whatever i try breaks it.

 

Here is the function that genarate random string, I use it myself.

function generateRand($length){
        $rawSalt = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        $rawSalt = str_shuffle($rawSalt);
        return substr($rawSalt, 0, $length);
    }

PHP:

Okay now user it this way

first paste above function at the bottom of the php page, then go to line 14 the are variable "$newfn2", you need to change its value.

paste this code just below line 13.

$newfn2 = generateRand(8);

PHP:

and I hope your problem will be fixed by above solution.

If there is any query, please let me know.