- property_exists: documentation ( source)
- trim: documentation ( source)
<?php
class User {
private $firstname;
private $lastname;
private $age;
public function __contruct() {
$this->firstname = null;
$this->lastname = null;
$this->age = null;
}
public function __set($property, $value) {
$property = trim($property);
if (!property_exists($this, $property)) {
throw new Exception("$property does not exists");
}
if( !isset($value) || empty($value)) {
throw new Exception("$property Can not be NULL or EMPTY");
}
switch($property) {
case "firstname":
case "lastname":
if(!is_string($value)) {
throw new Exception("$property must be a String");
}
$this->$property = $value;
break;
case "age":
if(!is_int($value)) {
throw new Exception("TypeError : $property must be an Integer Value");
}
$this->$property = $value;
break;
default:
throw new Exception("Invalid Exception.");
break;
}
}
public function __get($property) {
if(!property_exists($this, $property)) {
throw new Exception("Invalid Arguments: $property Does not Exists");
}
return $this->$property;
}
}
$user = new User();
$user->firstname = "";
echo $user->firstname;