Closure::call() method is added as a shorthand way to temporarily bind an object scope to a closure and invoke it. It is much faster in performance as compared to bindTo of PHP 5.6.
Example - Pre PHP 7
<?php
class A {
private $x = 1;
}
// Define a closure Pre PHP 7 code
$getValue = function() {
return $this->x;
};
// Bind a clousure
$value = $getValue->bindTo(new A, 'A');
print($value());
?>
It produces the following browser output −
1
Example - PHP 7+
<?php
class A {
private $x = 1;
}
// PHP 7+ code, Define
$value = function() {
return $this->x;
};
print($value->call(new A));
?>
It produces the following browser output −
1
