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Is there any advantage to using __construct() instead of the class's name for a constructor in PHP?
Yes, there are several advantages to using the magic function __construct() instead of the class's name. Those are listed below −
- The magic function __construct is introduced in PHP 5.4. One advantage of using __construct() over ClassName() as a constructor is if you change the name of the class, you don't need to update the constructor which supports DRY(don't repeat yourself) concept.
- If you have a child class you can call parent::__construct()to call the parent constructor in an easy way.
Example
<?php
class myclass{
public function __construct(){
echo 'The class "', __CLASS__, '" was initiated!'."
";
}
}
class childclass extends myclass{
public function __construct() {
parent::__construct();
print "In SubClass constructor ";
}
}
$myobj = new childclass();
?>Output
The class "myclass" was initiated! In SubClass constructor
Note
"__CLASS__" is what’s called a magic constant, which, in this case, returns the name of the class in which it is called.
Old style constructors are DEPRECATED in PHP 7.0 and will be removed in a future version. You should always use __construct() in new code.
Updated on: 29-Jun-2020
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