Event Component

PHPPowertools is a web application framework for PHP >= 5.4.

PHPPowertools/Event is the third component of the PHPPowertools that has been released to the public.

The purpose of this component is to provide a PHP-based event handling interface similar to both NodeJS's EventEmitter and your browser's EventTarget.

Example use :

use \PowerTools\Event_EmitterasEvent_Emitter;
// Define some event handlers$eventHandlers = [
'handler1' => function($a = '', $b = '') {
// var_dump($this);echo'handler1 fired with parameters "' . $a . '" and "' . $b . '"<br />';
}, 'handler2' => function($a = '', $b = '') {
// var_dump($this);echo'handler2 fired with parameters "' . $a . '" and "' . $b . '"<br />';
}, 'handler3' => function($a = '', $b = '') {
// var_dump($this);echo'handler3 fired with parameters "' . $a . '" and "' . $b . '"<br />';
}, 'handler4' => function($a = '', $b = '') {
// var_dump($this);echo'handler4 fired with parameters "' . $a . '" and "' . $b . '"<br />';
}
];
// Create an instance of the Event_Emitter class$emitter = Event_Emitter::factory();
// Add your event handlers to your Event_Emitter instance for the 'go' event.$emitter->addListeners('go', $eventHandlers);
// Emit the 'go' event, with parameters 'FOO' and 1.$emitter->emit('go', 'FOO', 1);
// Remove the second event handler for the 'go' event$emitter->removeListener('go', $eventHandlers['handler2']);
// Remove ALL listeners for the 'go' event$emitter->removeAllListeners('go');

---

Supported methods :

• addListener
• addListeners (1)
• once
• removeListener
• removeListeners (1)
• removeAllListeners
• setMaxListeners
• getMaxListeners
• listeners
• emit
• listenerCount
• dispatch

---

1. These methods have no equivalent in either NodeJS's EventEmitter or your browser's EventTarget.

---

Author

John slegers