<?php //Simple math class class Math { function __construct($a) { $this->a =$a; } //Returns a closure function mul() { //We can't directly use $this inside closure $self = $this; return function($n) use($this) { return $n*$this->a; }; } } $math = new Math(5); $mul = $math->mul(); echo $mul(4); //Output : 20 ?>
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