How to generate random password with PHP?

Question

Or is there a software to auto generate random passwords?

Answer 1

This function will generate more stronger password than most woted solution:

function generatePassword($size=8){
    $p = openssl_random_pseudo_bytes(ceil($size*0.67), $crypto_strong);
    $p = str_replace('=', '', base64_encode($p));
    $p = strtr($p, '+/', '^*');
    return substr($p, 0, $size);      
}

Each character of password will be [A-Z] or [a-z] or ^ or *