Jaxon

Jaxon allows the developer to specify global functions that will be called at different steps during the execution of each request in the PHP application.

Before processing the request

$jaxon->callback()->before(function($target, &$bEndRequest) {});

The provided callback must accept the following parameters.

/**
 * @param Jaxon\Request\Target  $target         The function or class method to be called.
 *
 * @return bool
 */

The $target parameter allows to retrieve the called function or class, as follows.

    if($target->isFunction())
    {
        $function = $target->getFunctionName();
    }
    elseif($target->isClass())
    {
        $class = $target->getClassName();
        $method = $target->getMethodName();
    }

If the callback returns the value true, the request processing is stopped, and the response is sent back to the browser.

After processing the request

$jaxon->callback()->after(function($target, $bEndRequest) {});

The $target parameter is the same as in the before() callback, and $bEndRequest is its return value.

In the case of an invalid request

$jaxon->callback()->invalid(function($sMessage) {});

The callback parameter is the error message returned when processing the request. The response to the Jaxon request is reset before the callback is called.

In the case of a processing error

$jaxon->callback()->error(function($xException) {});

The parameter is the exception thrown while processing the request. The response to the Jaxon request is reset before the callback is called.