How to use
A callable is assigned to a hook using the Slim application’s hook()
method:
<?php
$app = new \Slim\Slim();
$app->hook('the.hook.name', function () {
//Do something
});
The first argument is the hook name, and the second argument is the callable. Each hook maintains a prioritylist of registered callables. By default, each callable assigned to a hook is given a priority of 10. You can giveyour callable a different priority by passing an integer as the third parameter of the hook()
method:
<?php
$app = new \Slim\Slim();
$app->hook('the.hook.name', function () {
//Do something
}, 5);
The example above assigns a priority of 5 to the callable. When the hook is called, it will sort all callablesassigned to it by priority (ascending). A callable with priority 1 will be invoked before a callable with priority 10.
Hooks do not pass arguments to their callables. If a callable needs to access the Slim application, you can injectthe application into the callback with the use
keyword or with the Slim application’s static getInstance()
method:
<?php
$app = new \Slim\Slim();
$app->hook('the.hook.name', function () use ($app) {
// Do something
});