__unset () Magic Method Delete a private property within a class

__unset () Magic Method Delete Private Property
unset () Delete a shared property by using the __unset () Magic method to manipulate the private property

Automatically executes the In-Class __unset () Magic method when the unset () function is executed outside the class

Class HDW {private $name;　　Private $age; Private $money;　　Employee pay public $c;　　　　function __construct ($name, $age = ", $money) {$this->name = $name;　　　　$this->age = $age;　　$this->money = $money;　　} function __isset ($var) {$array = array ("name", "Age"); if (In_array ($var, $array)) {echo $var. "attribute exists, his value is:".　　$this-$var;　　　　} elseif (In_array ($var, Array_keys (Get_object_vars ($this)))) {echo "property does not allow external check";　　Return　　　　} else {echo ' property does not exist ';　　　　　　}} function __unset ($c) {if ($c = = ' age ') {unset ($this, $c); echo "Delete attribute {$c} successfully!　　　　";　　　　} else {echo "does not allow deletion of property {$c}";　　}} function Get_money () {echo $this->money; }} $lisi = new HDW ("John Doe", 5500),//isset ($lisi->money2222);//echo isset ($_get[' page ')? $_get[' Page ']:1;unset ( $lisi->name);//echo $lisi->get_money ();

　　

__unset () Magic Method Delete a private property within a class