Abstract classes cannot be instantiated. Abstract classes, like other classes, allow definition of variables and methods. An abstract class can also define an abstract method. an abstract class method is not executed, but may be executed in its derived class. Example 6: abstract class? Phpabst... abstract class
Abstract classes cannot be instantiated.
Abstract classes, like other classes, allow definition of variables and methods.
An abstract class can also define an abstract method. an abstract class method is not executed, but may be executed in its derived class.
Example 6: abstract class
x = $x; }}class foo2 extends foo { function display() { // Code }}?>
_ Call
A special _ call () method is added to the PHP5 object. this method is used to monitor other methods in an object. If you try to call a method that does not exist in an object, the __call method will be automatically called.
Example 7: __call
doStuff();$x->fancy_stuff();?>
This special method can be used to implement the "overload" action, so that you can check your parameters and pass parameters by calling a private method.
Example 8: use _ call to implement "overload" action
foo_for_int($arguments[0]); if (is_string($arguments[0])) $this->foo_for_string($arguments[0]); } } private function foo_for_int($x) { print ("oh an int!"); } private function foo_for_string($x) { print ("oh a string!"); }}$x = new Magic();$x->foo(3);$x->foo("3");?>
_ Set and _ get
This is a great method. the __set and _ get methods can be used to capture variables and methods that do not exist in an object.
Example 9: _ set and _ get
bar = 3;print ($x->winky_winky);