password strength php
public function checkPassword($pwd, &$errors) {
$errors_init = $errors;
if (strlen($pwd) < 8) {
$errors[] = "Password too short!";
}
if (!preg_match("#[0-9]+#", $pwd)) {
$errors[] = "Password must include at least one number!";
}
if (!preg_match("#[a-zA-Z]+#", $pwd)) {
$errors[] = "Password must include at least one letter!";
}
return ($errors == $errors_init);
}