Introduction to the usage of php __call, __set and __get

 class foo {
 function __call($name,$arguments) {
 print("Did you call me? I'm $name!");
 print_r($ arguments);
 print("");
 }

 function doSecond($arguments)
 {
 print("Right, $arguments!");
 }
 }

 $test = new foo();
 $test->doFirst('no this function');
 $test->doSecond('this function exist');
?>

__call implements the "overload" action This special method can be used to implement "overloading" actions, so that you can check your parameters and pass them by calling a private method.

Example: Use __call to implement "overload" action

 class Magic {
 function __call($name,$arguments) {
 if($name=='foo') {
 if(is_int($arguments[0])) $ this->foo_for_int($arguments[0]);
 if(is_string($arguments[0])) $this->foo_for_string($arguments[0]);
 }
 }

 private function foo_for_int($ x) {
 print("oh an int!");
 }
 //by bbs.it-home.org

 private function foo_for_string($x) {
 print("oh a string!");
 }
 }

 $test = new Magic();
 $test->foo(3);
 $test->foo("3");
?>

2. Usage of __set and __get This is a great way to use the __set and __get methods to capture variables and methods that don't exist in an object. Example: __set and __get

 class foo {
 function __set($name,$val) {
 print("Hello, you tried to put $val in $name");
 }

 function __get($name) {
 print("Hey you asked for $name");
 }
 }

 $test = new foo();
 $test->__set('name',' justcoding');
 $test->__get('name');
?>

In PHP programming, especially in PHP object-oriented programming, flexibly apply __call, __set and _ _get, you can receive unexpected surprises, it is recommended that everyone grasp it firmly.