Common magic Methods for PHP

__construct: constructor, once the object is created, it is automatically called

__call: Automatically triggers when undefined methods are called

__set: Automatically triggers when a value is set to a property outside the class that is not accessible

__get: Automatically fires when a property that is not accessible outside the class is obtained

__isset: Automatically fires when isset () or empty () is used for properties that are not accessible outside the class

__unset: Automatically fires when unset () is used for properties that are not accessible outside the class

__destruct: Automatically triggers when an object ends its life cycle

<?php header ("Content-type:text/html;charset=utf-8"), class magic{private $testGet;       Private Test __get The properties of the Magic method private $testSet;     Private Test __set The properties of the Magic method private $testIsset;     Private Test __isset The properties of the Magic method private $testUnset;     Private Test __unset The properties of the Magic method public static $a = 1;         The private constants used to test the __clone Magic method/** * Test the composition method, call this method first when creating a new object */Public function __construct () {echo static:: $a +2; echo "This is the constructor." <br> "."    <br> "; }/** * Tests the Isset method, which is triggered when the inaccessible property is called by the isset () or empty () method when the */Public Function __isset ($name) {echo "pair is inaccessible Properties: ". $name." Call Isset () or empty () "." <br> "."    <br> "; }/** * Tests the unset method, which is triggered when the inaccessible property is called the unset () method when the */Public Function __unset ($name) {echo "When the property is unreachable:". $na Me. " Call unset () "." <br> "."    <br> "; }/** * Tests the call method, which is triggered when an undefined method is called */Public Function __call ($method, $agrs) {echo "called a nonexistent Method:". $method ." <br> "."        This is the received parameter: ";        Print_r ($AGRS); echo "<bR> "."    <br> "; }/** * Tests the Set method, which is triggered when an inaccessible property is set (*/Public function __set ($name, $data) {echo "called a Non-set property:". $name. " <br> "." The parameters are: ". $data."    <br> "; /** * Tests the Get method, which is triggered when an inaccessible property is accessed (*/Public Function __get ($name) {echo "called the Unreachable Property:". $name. " <br> "."    <br> ";        }/** * Tests the Clone method, which is triggered when the class is cloned */Public Function __clone () {echo static:: $a +1; echo "I've been cloned." <br> "."    <br> ";    }/** * Test the destructor method, which is called when the script is closed */Public Function __destruct () {echo "This is a destructor"; }} $test =new Magic ();   Instantiate the Magic class, triggering the constructor $test->callmethod (' 123 ');     Call a method that does not exist $test->testset=123;         Set properties outside the class that are not accessible $test->testget;     Gets an inaccessible property outside the class $test2=clone $test;       Cloning the test class, opens up another identical property and method storage space, but does not affect Isset ($test->testisset);        Use Isset to perform an inaccessible property unset ($test->testunset) outside the class; Using unset to perform non-accessible properties outside the class

Common magic Methods for PHP