使用php为文件提供随机名称

Question

i am trying to give random name to my file name using this code but how do i provide file path and name so it works?

this is my file path

<script type="text/javascript" src="../../js/file.js"></script>

and here's my code

<?php
function random_string($length) {
    $key = '';
    $keys = array_merge(range(0, 9), range('a', 'z'));

    for ($i = 0; $i < $length; $i++) {
        $key .= $keys[array_rand($keys)];
    }

    return $key;
}

echo random_string(50);
?>

this out put wil be like this " i40q6jjmvib6tb36skrutcitok1gxfkprz65e50xsiembjov0b "

and i want it to be like this on my file

<script type="text/javascript" src="../../js/i40q6jjmvib6tb36skrutcitok1gxfkprz65e50xsiembjov0b.js"></script>

Answer 1

<?php
function random_string($length) {
    $key = '';
    $keys = array_merge(range(0, 9), range('a', 'z'));

    for ($i = 0; $i < $length; $i++) {
        $key .= $keys[array_rand($keys)];
    }

    return "js-".$key.".js"; // Change here
}

echo random_string(50);
?>

And in your htaccess, write condition for rewriting /js\-[a-z0-9]*\.js/ to file.js