Online PHP editor | refs for 9O71q

<?php namespace middleware; /** * Initialize a middleware action * * @param callable $anAction * @param callable $aNextAction (optional) * @return callable */ function init_action(callable $anAction, callable $aNextAction = null) { return function (...$args) use ($anAction, $aNextAction) { $result = $anAction(...$args); if (is_callable($aNextAction)) { $result = $aNextAction($result); } return $result; }; } $action = init_action(function() { return "foo"; }, function($foo) { echo "I said, $foo"; }); $action();