PHP OOP Constructor - W3Schools

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PHP - The __construct() Function

A constructor allows you to initialize an object's properties upon creation of the object.

If you create a __construct() function, PHP will automatically call this function when you create an object from a class.

Notice that the construct function starts with two underscores (__)!

We see in the example below, that using a constructor saves us from calling the set_name() method which reduces the amount of code:

Example

<?phpclass Fruit { public $name; public $color; function __construct($name) { $this->name = $name; } function get_name() { return $this->name; }}$apple = new Fruit("Apple"); echo $apple->get_name();?> Try it Yourself »

Another example:

Example

<?phpclass Fruit { public $name; public $color; function __construct($name, $color) { $this->name = $name; $this->color = $color; } function get_name() { return $this->name; } function get_color() { return $this->color; }}$apple = new Fruit("Apple", "red");echo $apple->get_name();echo "<br>";echo $apple->get_color();?> Try it Yourself » ❮ Previous Next ❯ ★ +1 Sign in to track progress

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