PHP script to generate password. Call url without any query string to get a medium strength password with 15 char width, or with "length=XXX" for more char, or/and with "nocomplex" OR "complex" : http://example.com/password_generate.php?length=30&complex

password_generate.php

<?php
function rand_str($size, $complex)
{
        // A-Z a-z 0-9
        $source = array_merge(range('A', 'Z'), range('a', 'z'), range(0, 9));
        $password = "";

        if ($complex >= 1) {
                $source = array_merge($source, str_split('.-_'));
        }

        if ($complex >= 2) {
                $source = array_merge($source, str_split('!?,;:@&/%$#'));
        }


        for ($i = 0; $i < abs(intval($size)); $i++) {
                $password .= $source[rand(0, sizeof($source) - 1)];
        }
        
        return $password;
}

$defaultLength = 15;
$length = isset($_GET['length']) ? abs((int)$_GET['length']) : $defaultLength;
$strength = 1;
$strength = isset($_GET['complex']) ? 2 : $strength;
$strength = isset($_GET['nocomplex']) ? 0 : $strength;

// Password length control
if ($length < 0 || $length > 1000) {
        $length = $defaultLength;
}

echo rand_str($length, $strength);