Solving the compatibility problem of PHP4.0 and PHP5.0 class constructors _php techniques

In the PHP5.0 version, the definition rules for the 4.0 version of the constructor are also compatible. If 4.0 constructors and __construct () functions are defined at the same time, the __construct () function takes precedence.
In order for the class code to be compatible with PHP4.0 and 5.0 at the same time, you can take the following ways:

Copy Code code as follows:

<?php
Class MyClass {
function __construct () {//for PHP5.0
Echo ' This is Class2 construct ';
}
In order for the class code to be compatible with both PHP4.0 and 5.0
function MyClass () {//for PHP4.0
$this->__construct ();
}
}
$c 3 = new MyClass;
?>