PHP

php password validation preg_match

if(!preg_match('/^(?=.*d)(?=.*[A-Za-z])[0-9A-Za-z!@#$%]{8,12}$/', $password)) {
    echo 'the password does not meet the requirements!';
}

php password validation preg_match

preg_match('/^(?=.*d)(?=.*[@#-_$%^&+=§!?])(?=.*[a-z])(?=.*[A-Z])[0-9A-Za-z@#-_$%^&+=§!?]{8,20}$/',$password)