PHP code example of axy / callbacks

1. Go to this page and download the library: Download axy/callbacks library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

axy / callbacks example snippets


function sum($a, $b)
{
    return $a + $b;
}


$callback = new Callback('sum');

echo $callback(2, 2);


$callback = new Callback('sum', [3]);

echo $callback(4); // 3 + 4 = 7


class MyClass
{
    public function getEventHandler()
    {
        return new Callback([$this, 'onEvent'], ['click'], true);
    }

    private function onEvent($event)
    {
        echo 'Event '.$event.'!';
    }
}

$obj = new MyClass();
$handler = $obj->getEventHandler();

// click
$handler(); // "Event click!". Private method was called