PHP 7's Closure::call() has better performance, dynamically binding a closure function to a new object instance and calling the function.
Example
<?php
class A {
private $x = 1;
}
// PHP 7 之前版本定义闭包函数代码
$getXCB = function() {
return $this->x;
};
// 闭包函数绑定到类 A 上
$getX = $getXCB->bindTo(new A, 'A');
echo $getX();
echo "<br/>";
// PHP 7+ 代码
$getX = function() {
return $this->x;
};
echo $getX->call(new A);
?>The above program execution output result is:
1 1
