Example of using Closure::call in PHP7

PHP 7's Closure::call() has better performance. Its function is to dynamically bind a closure function to a new one. Object instanceAnd call and execute the function.

Description:

public mixed Closure::call ( object $newthis [, mixed $... ] )

Temporarily binds the closure to

newthis and calls it with any given arguments.

Example before php7:

<?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, &#39;A&#39;); 
echo $getX();
print(PHP_EOL);

Example after php7:

<?php
class A {
    private $x = 1;
  }
   $getX = function() {
        return $this->x;
  };
  echo $getX->call(new A);
 ?>

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php video tutorial php7 tutorial

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