Add method in an std object in php

user_741747 0
Viewed 23104

Is it possible to add a method/function in this way, like

$arr = array(
    "nid"=> 20,
    "title" => "Something",
    "value" => "Something else",
    "my_method" => function($arg){....}
);

or maybe like this

$node = (object) $arr;
$node->my_method=function($arg){...};

and if it's possible then how can I use that function/method?

stdclass object php
5 Answers

This is now possible to achieve in PHP 7.1 with anonymous classes

$node = new class {
    public $property;

    public function myMethod($arg) { 
        ...
    }
};

// and access them,
$node->property;
$node->myMethod('arg');
user_14718560

Since PHP 7 it is also possible to directly invoke an anonymous function property:

$obj = new stdClass;
$obj->printMessage = function($message) { echo $message . "\n"; };
echo ($obj->printMessage)('Hello World'); // Hello World

Here the expression $obj->printMessage results in the anonymous function which is then directly executed with the argument 'Hello World'. It is however necessary to put the function expression in paranetheses before invoking it so the following will still fail:

echo $obj->printMessage('Hello World'); 
// Fatal error: Uncaught Error: Call to undefined method stdClass::printMessage()
user_52331880

Another solution would be to create an anonymous class and proxy the call via the magic function __call, with arrow functions you can even keep reference to context variables:

 new Class ((new ReflectionClass("MyClass"))->getProperty("myProperty")) {
            public function __construct(ReflectionProperty $ref)
            {
                $this->setAccessible = fn($o) => $ref->setAccessible($o);
                $this->isInitialized = fn($o) => $ref->isInitialized($o);
                $this->getValue = fn($o) => $ref->getValue($o);
            }

            public function __call($name, $arguments)
            {
                $fn = $this->$name;
                return $fn(...$arguments);
            }

    }
user_18664520 
class myclass {
function __call($method, $args) {
if (isset($this->$method)) {
$func = $this->$method;
return call_user_func_array($func, $args);
}
}
}
$obj = new myclass();
 $obj->method = function($var) { echo $var; };

$obj->method('a');

Or you can create defult class and use...

user_145445480
Related