How to debug fatal error "Maximum runtime"?

Question

I am trying to use Zend_acl in my application. I followed the book "Zend Framework in action". I added this helper:

<?php /** * Zend Framework * * LICENSE "removed for clarity" * /** Zend_Controller_Action_Helper_Abstract */ require_once 'Zend/Controller/Action/Helper/Abstract.php'; class Bravo_Controller_Action_Helper_Acl extends Zend_Controller_Action_Helper_Abstract { protected $_action; protected $_auth; protected $_acl; protected $_controllerName; public function __construct(Zend_View_Interface $view = null, array $options = array()) { $this->_auth = Zend_Auth::getInstance(); $this->_acl = $options['acl']; //var_dump($this->_acl);die(); } public function init() { $this->_action = $this->getActionController(); // add resource for this controller $controller = $this->_action->getRequest()->getControllerName(); if(!$this->_acl->has($controller)) { $this->_acl->add(new Zend_Acl_Resource($controller)); } } public function preDispatch() { $role = 'guest'; if ($this->_auth->hasIdentity()) { $user = $this->_auth->getIdentity(); if(is_object($user)) { $role = $this->_auth->getIdentity()->getUral()->getUralAccessNbr(); } } $request = $this->_action->getRequest(); $controller = $request->getControllerName(); $action = $request->getActionName(); $module = $request->getModuleName(); $this->_controllerName = $controller; $resource = $controller; $privilege = $action; if (!$this->_acl->has($resource)) { $resource = null; } //** EDIT: During my test, the user isn't allowed. I'm now suspecting the 4 requests setting to be wrong. if (!$this->_acl->isAllowed($role, $resource, $privilege)) { $request->setModuleName('default'); $request->setControllerName('login'); $request->setActionName('login'); $request->setDispatched(false); } } public function allow($roles = null, $actions = null) { $resource = $this->_controllerName; $this->_acl->allow($roles, $resource, $actions); return $this; } public function deny($roles = null, $actions = null) { $resource = $this->_controllerName; $this->_acl->deny($roles, $resource, $actions); return $this; } } 

And bootstrap:

 <?php class Agenda_Bootstrap extends Zend_Application_Module_Bootstrap { protected function _initAcl() { // acl action helper $acl = new Bravo_Acl_Acl(); $aclHelper = new Bravo_Controller_Action_Helper_Acl(null, array('acl' => $acl)); Zend_Controller_Action_HelperBroker::addHelper($aclHelper); } } 

Helper is not used in the controller. I tried my application to find out if everything is correct, and I got this error:

Fatal error: maximum run time of 30 seconds exceeded in / usr / share / php / ZendFramework -1.11.11 / Zend / Filter / PregReplace.php on line 171

Using this call stack:

 Call Stack # Time Memory Function Location 1 0.0001 314556 {main}( ) ../index.php:0 2 0.3275 2039356 Zend_Application->run( ) ../index.php:29 3 0.3275 2039356 Zend_Application_Bootstrap_Bootstrap->run( ) ../Application.php:366 4 0.3276 2039412 Zend_Controller_Front->dispatch( ) ../Bootstrap.php:97 5 31.7462 4813252 Zend_Controller_Dispatcher_Standard->dispatch( ) ../Front.php:954 6 31.7470 4813944 Zend_Controller_Action->__construct( ) ../Standard.php:268 7 31.7470 4814144 Zend_Controller_Action_HelperBroker->__construct( ) ../Action.php:132 8 31.7472 4814924 Zend_Controller_Action_Helper_ViewRenderer->init( ) ../HelperBroker.php:253 9 31.7472 4814924 Zend_Controller_Action_Helper_ViewRenderer->initView( ) ../ViewRenderer.php:516 10 31.7473 4815260 Zend_Controller_Action_Helper_ViewRenderer->_getBasePath( ) ../ViewRenderer.php:469 11 31.7478 4815628 Zend_Filter_Inflector->filter( ) ../ViewRenderer.php:393 12 31.7489 4816768 Zend_Filter_Word_CamelCaseToSeparator->filter( ) ../Inflector.php:473 13 31.7489 4816768 Zend_Filter_PregReplace->filter( ) ../CamelCaseToSeparator.php:46 

I tried to increase max_execution_time , but it is always the same: the first four stacks still remain unchanged, and the fifth reflects max_execution_time (30 seconds => 31.7462, 40 seconds => 42.6546, etc.)

So, I suspect that Zend_Controller_Front->dispatch( ) is my source of problems, but why does it always take the maximum time? I am a bit confused. Does anyone have an idea where I should dig?

EDIT: I will go further in my debugging. I now suspect that setting up 4 queries is incorrect in my assistant when the user is not allowed. I also edited the helper code and added a comment.

EDIT2: Patrick, you're so right! I double-checked, and I got into an endless loop: don't-have-acces-to-login-page => go-to-login-page: -D What a waste of time today ... anyway it ends well thanks everything.

Answer 1

 if (!$this->_acl->isAllowed($role, $resource, $privilege)) { $request->setModuleName('default'); $request->setControllerName('login'); $request->setActionName('login'); $request->setDispatched(false); } 

Are you sure that you always have permission to access the login controller, regardless of its role?

In any case, it looks like you end up in an endless loop where the ZF send loop never ends.

Answer 2

If the debugger is not available, you can use pure PHP code. Here is an option using the small helper class CSysTracer.

Based on this interface:

 abstract class CSTReportDelegate { abstract public function emitVariableChange( $variableName, $oldValue, $newValue ); abstract public function emitVariableSetNew( $variableName, $newValue ); } 

created this particular instance

 class CSTSimpleReportDelegate extends CSTReportDelegate { public function emitVariableChange( $variableName, $oldValue, $newValue ) { echo '<br />[global/change] '. $variableName . ' : ' . print_r( $oldValue, true ) . ' &rarr; ' . print_r( $newValue, true ); } public function emitVariableSetNew( $variableName, $newValue ) { echo '<br />[global/init] '. $variableName . ' &rarr; ' . print_r( $newValue, TRUE ); } } 

... pass it to CSysTracer:

 CSysTracer::setReportDelegate( new CSTSimpleReportDelegate() ); 

... and activate agent tracking using this:

 CSysTracer::start( 5 ); 

While CSTSimpleReportDelegate is outputting output, it can write material to a log file and, for example, make selective entries on certain statements.

Note that this version of CSysTracer tracks global variable changes. Rewriting it to record each statement is simple enough.

CSysTracer does the trick using the PHP tick function :

 class CSysTracer { static protected $reportDelegate; static private $globalState = array(); static private $traceableGlobals = array(); static private $globalTraceEnabled = FALSE; const DEFAULT_TICK_AMOUNT = 1; static public function setReportDelegate( CSTReportDelegate $aDelegate ) { self::$reportDelegate = $aDelegate; } static public function start( $tickAmount = self::DEFAULT_TICK_AMOUNT ) { register_tick_function ( array( 'CSysTracer', 'handleTick' ) ); } static public function stop() { unregister_tick_function( array( 'CSysTracer', 'handleTick' ) ); } static public function evalAndTrace( $someStatement ) { declare( ticks = 1 ); { self::start(); eval( $someStatement ); self::stop(); } } static public function addTraceableGlobal( $varName ) { if ( is_array( $varName )) { foreach( $varName as $singleName ) { self::addTraceableGlobal( $singleName ); } return; } self::$traceableGlobals[ $varName ] = $varName; } static public function removeTraceableGlobal( $varName ) { unset( self::$traceableGlobals[ $varName ] ); } /** * Main function called at each tick. Calls those functions, which * really perform the checks. * */ static public function handleTick( ) { if ( TRUE === self::$globalTraceEnabled ) { self::traceGlobalVariable(); } } static public function enableGlobalsTrace() { self::$globalTraceEnabled = TRUE; } static public function disableGlobalsTrace() { self::$globalTraceEnabled = FALSE; } static public function traceGlobalVariable( ) { foreach( self::$traceableGlobals as $aVarname ) { if ( ! isset( $GLOBALS[ $aVarname ] )) { continue; } if ( ! isset( self::$globalState[ $aVarname ] ) ) { self::$reportDelegate->emitVariableSetNew( $aVarname, $GLOBALS[ $aVarname ] ); self::$globalState[ $aVarname ] = $GLOBALS[ $aVarname ]; continue; } if ( self::$globalState[ $aVarname ] !== $GLOBALS[ $aVarname ]) { self::$reportDelegate->emitVariableChange( $aVarname, self::$globalState[ $aVarname ], $GLOBALS[ $aVarname ] ); } self::$globalState[ $aVarname ] = $GLOBALS[ $aVarname ]; } } }