Php Try Catch Catchable Fatal Error
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Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Unable to catch a 'catchable fatal
Php Try Catch Fatal Error
error' from QueryPath up vote 0 down vote favorite I have a script that scrapes some old HTML. It does about 1000 pages a day, and every so often it chokes for some reason and throws up the following error: PHP Catchable fatal error: Argument 1 passed to DOMXPath::__construct() must be an instance of DOMDocument, null given, called in /var/scraper/autotrader/inc/QueryPath/QueryPath/CSS/DOMTraverser.php on line 417 and defined in php set_error_handler /var/scraper/autotrader/inc/QueryPath/QueryPath/CSS/DOMTraverser.php on line 467 At first I thought it was the error was generated when htmlqp($html) was called, but I have wrapped it in a try{} statement and it didnt catch anything: UPDATE: I've found the offending line of code by using @ to see when the script would terminate without error. It's this line: try { $items = $html->find('.searchResultHeader')->find('.vehTitle'); //this one } catch (Exception $e) { var_dump(get_class($e)); echo 'big dump'.$e->getTraceAsString(); } When it bombs out, it doesn't even echo 'big dump', so it really doesn't seem to be catching it. I'm wondering if this is maybe a fault with QueryPath's error handling rather than my own? php try-catch querypath share|improve this question edited Jul 30 '13 at 18:20 asked Jul 30 '13 at 17:15 James Napier 342311 Can anybody offer some insight into why this is not catching? –James Napier Jul 31 '13 at 10:25 i don't know if it still necessary to someone, who need the solution requested to chekc stackoverflow.com/questions/2468487/… –Shahadat Hossain Khan May 21 '15 at 7:23 add a comment| 2 Answers 2 active oldest votes up vote 0 down vote This: $html->find('.searchResultHeader')->find('.vehTitle'); is the same as t
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to string in /Users/grahamellis/oop/oop5.php on line 108 How do you avoid your program failing like this? There are a number of options. 1. You can run a method on your object that will convert it to a string: print ($result->describe() . "\n"); 2. You can serialize your object using the built in PHP serialise function. This will convert the object to s atring in predetermined format, so that you can unserialize it later ... and you'll get a string which you can save to file, print out, transmit to another computer, etc. 3. You can (from PHP 5.2) serialise the object with json_encode. "JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write. It is easy for machines to parse and generate." ... [JSON
following router converter defined: $router->addGet(...) ->convert('southWest', function($southWest) { $sw = explode(',', $southWest); try{ $p = new Point($sw[0], $sw[1]); } catch(Exception $e) { //Impossible to create instance of Point and https://forum.phalconphp.com/discussion/3715/catching-fatal-errors-on-type-hinted-controller-methods senseless to use default values $p = NULL } return $p; }); The parameter (Point) will be passed to the following controller method: public function fooAction(Point $southWest) { ...mycode } In case of an Exception https://www.tutorialspoint.com/php/php_error_handling.htm inside the converter, $p = NULL will be returned and then passed to fooAction. Unfortunately then a Catchable fatal error will be thrown by PHP. Now my questions: Is it possible to redirect to fatal error another action before fooAction will be called with a invalid parameter ? Is it possible to catch the fatal error and call another action? If yes, where should that be done? Phalcon 78.8k Oct '14 I think those fatal E_RECOVERABLE_ERROR errors cannot be catched by a try/catch: try { class X { public function b(X $x) { } } $a = null; $x = new X; $x->b($a); } catchable fatal error catch (\Exception $e) { // this is never executed } PHP Catchable fatal error: Argument 1 passed to X::b() must be an instance of X, null given, called in /Users/scott/cphalcon/a.php on line 13 and defined in /Users/scott/cphalcon/a.php on line 6 You can create an error handler to handle these kind of errors: set_error_handler(function($errno, $errstr, $errfile, $errline) { if (E_RECOVERABLE_ERROR === $errno) { echo "'catched' catchable fatal error\n"; return true; } return false; }) dompie 4.1k Oct '14 Yes, indeed. They can not be catched. I was hoping there is a build in way in phalcon that makes it possible to elegantly call/redirect to another action in that case. I'll then take another way and send an invalid request response right from the catch block before die()ing. Thanks sventunus 1.5k edited Oct '14 Oct '14 How about: $sw = explode(',', $southWest) try { $p = new Point($sw[0], $sw[1]); if(!get_class(p) === Point) { // call other action here } } catch(Exception $e) { //Impossible to create instance of Point and senseless to use default values $p = NULL } return $p; ? dompie 4.1k edited Oct '14 Oct '14 My point class will throw an exception when coordinates are invalid (e.g. 837.23472,-414.128371). I can't do tha
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