How to call the constructor with call
How could I call the constructor of a class with call_user_func_array
It is not possible to do :
$obj = new $class();
call_user_func_array(array($obj, '__construct'), $args);
because if the constructor has parameters, the new will fail.
Constraint : I do not control the classes that I have to instantiate, nor can I modify them.
Don't ask me why I want to do this crazy thing, this is a crazy test.
You can use reflection like:
$reflect = new ReflectionClass($class);
$instance = $reflect->newInstanceArgs($args);
As of PHP 5.6.0, the ...
operator can also be used for this purpose.
$instance = new $class(...$args);
if(version_compare(PHP_VERSION, '5.6.0', '>=')){
$instance = new $class(...$args);
} else {
$reflect = new ReflectionClass($class);
$instance = $reflect->newInstanceArgs($args);
}
链接地址: http://www.djcxy.com/p/62526.html
上一篇: 使用PHP中的前导零格式化数字
下一篇: 如何通过调用调用构造函数