Created
October 10, 2018 19:29
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MetaTrait - Add methods on the fly to an object
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| <?php | |
| trait MetaTrait | |
| { | |
| private $methods = array(); | |
| public function addMethod($methodName, $methodCallable) | |
| { | |
| if (!is_callable($methodCallable)) { | |
| throw new InvalidArgumentException('Second param must be callable'); | |
| } | |
| $this->methods[$methodName] = Closure::bind($methodCallable, $this, get_class()); | |
| } | |
| public function __call($methodName, array $args) | |
| { | |
| if (isset($this->methods[$methodName])) { | |
| return call_user_func_array($this->methods[$methodName], $args); | |
| } | |
| throw RunTimeException('There is no method with the given name to call'); | |
| } | |
| } | |
| ?> | |
| test.php | |
| <?php | |
| require 'MetaTrait.php'; | |
| class HackThursday { | |
| use MetaTrait; | |
| private $dayOfWeek = 'Thursday'; | |
| } | |
| $test = new HackThursday(); | |
| $test->addMethod('when', function () { | |
| return $this->dayOfWeek; | |
| }); | |
| echo $test->when(); | |
| ?> |
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