PHP Closure::call()
PHP Closure::call()
PHP 7’s Closure::call() has better performance and dynamically binds a closure function to a new object instance and call the function.
Example
Example
<?php
class A {
private $x = 1;
}
// PHP 7 之前版本定義閉包函數(shù)代碼
$getXCB = function() {
return $this->x;
};
// 閉包函數(shù)綁定到類 A 上
$getX = $getXCB->bindTo(new A, 'A');
echo $getX();
print(PHP_EOL);
// PHP 7+ 代碼
$getX = function() {
return $this->x;
};
echo $getX->call(new A);
?>The execution output of the above program is:
1
1
1
