本文实例讲述了PHP面向对象程序设计类的定义与用法。分享给大家供大家参考，具体如下：
PHP;">
name = $name;
$this->sex = $sex;
$this->age = $age;
}
// 直接为私有属性赋值时自动调用，可以屏蔽一些非法赋值
// 之前有版本可以设置方法为private function __set()
// The magic method __set() must have public visibility
// 因为5.35对魔术方法限制的严格了
public function __set($propertyName,$propertyValue) {
if ($propertyName == "sex") {
if (! ($propertyValue == "男" || $propertyValue == "女")) {
return;
}
if ($propertyValue > 150 || $propertyValue < 0) {
return;
}
}
// 根据传入的成员属性名,赋上相应的值
$this->$propertyName = $propertyValue;
}
// 用来获取私有属性
public function __get($propertyName) {
if (isset ( $this->$propertyName )) {
return ($this->$propertyName);
} else {
return (NULL);
}
}
public function __isset($propertyName) {
if ($propertyName == "name") {
return false; // 返回假，不允许在对象外部测定这个属性
}
return isset ( $this->$propertyName );
}
public function __unset($propertyName) {
if($propertyName=="name") {
return; //不允许删除name属性
}
unset($this->$propertyName);
}
function say() {
echo $this->name . "在说话
"; } function run() { echo "在走路·
"; } function __destruct() { echo "goodbye" . $this->name . "
"; } } $person1 = new Person (); $person2 = new Person ( "2" ); $person3 = new Person ( "3" ); // 自动调用了__set() $person1->name = "张三"; echo $person1->name; echo "
"; echo $person1->say (); // 自动调用了__get() echo $person1->age; echo "
"; var_dump ( isset ( $person1->name ) ); echo "
"; unset($person1->name); echo "unset------------>".$person1->name;//name 没有被unset() echo "
"; $person2 = null; ?>
"; } function run() { echo "在走路·
"; } function __destruct() { echo "goodbye" . $this->name . "
"; } } $person1 = new Person (); $person2 = new Person ( "2" ); $person3 = new Person ( "3" ); // 自动调用了__set() $person1->name = "张三"; echo $person1->name; echo "
"; echo $person1->say (); // 自动调用了__get() echo $person1->age; echo "
"; var_dump ( isset ( $person1->name ) ); echo "
"; unset($person1->name); echo "unset------------>".$person1->name;//name 没有被unset() echo "
"; $person2 = null; ?>
结果：
张三
goodbye2
goodbye3
goodbye张三
更多关于PHP相关内容感兴趣的读者可查看本站专题：《》、《》、《》、《》、《》、《》、《》及《》
希望本文所述对大家PHP程序设计有所帮助。
