ansaurus

Question

Try/Catch block in PHP not catching Exception

Answer 1

+2 A:

You are not running the identical code, otherwise the exception would be thrown on line 4 instead of 7. What code are you running exactly?

erisco 2010-01-31 18:12:59

Code is identical, only with new newlines added.

s7orm 2010-01-31 18:26:35

I am unsure of what to say then, as I am unable to reproduce your problem. If you throw an Exception in a try block that has a following catch block that catches an Exception, by all means it should work. It would be a bit more comforting if we had an exact copy of your code.

erisco 2010-01-31 18:33:27

<?phpfunction inverse($x) { if (!$x) { throw new Exception('Division by zero.'); } else return 1/$x;}try { echo inverse(5) . "\n"; echo inverse(0) . "\n";} catch (Exception $e) { echo 'Caught exception: ', $e->getMessage(), "\n";}// Continue executionecho 'Hello World';?>

s7orm 2010-01-31 18:36:42

Suppose you run the code in the CLI (just try the interactive shell), what happens then?

erisco 2010-01-31 18:39:36

Everything is fine:W:\usr\local\php>php -f w:\www\test.php0.2Caught exception: Division by zero.Hello WorldAlso when running the code on my website - everything is fine... somehow my test environment is corrupt, but I have no idea how or why

s7orm 2010-01-31 18:49:50

Okay, take the nonworking file and add an echo line before the try block. Does this show as output to the browser?

erisco 2010-01-31 18:52:41

Yep, it does...

s7orm 2010-01-31 19:11:46

I am out of ideas. Looks like outis can help you though. I agree that considering the PHP install and server extension is the next step.

erisco 2010-02-01 23:48:21

Answer 2

A:

My initial though is you have a typo in the name of the exception you are catching/throwing, but if your code is exactly the same I'm not sure exactly what is going on.

Try the following modification of the original script, and paste your results. It will help diagnose your issue a bit better.

<?php

//set up exception handler to report what we didn't catch
function exception_handler($exception) {

    if($exception instanceof MyException) {
        echo "you didn't catch a myexception instance\n";

    } else if($exception instanceof Exception) {
        echo "you didn't catch a exception instance\n";

    } else {
        echo "uncaught exception of type: ".gettype($exception)."\n";
    }

    echo "Uncaught exception: " , $exception->getMessage(), "\n";
}

//install the handler
set_exception_handler('exception_handler');

class MyException extends Exception {
}

function inverse($x) {
    if (!$x) {
        throw new MyException('Division by zero.');
    }
    else return 1/$x;
}

try {
    echo inverse(5) . "\n";
    echo inverse(0) . "\n";
} catch (MyException $e) {
    echo 'Caught myexception: ',  $e->getMessage(), "\n";
} catch (Exception $e) {
    echo 'Caught exception: ',  $e->getMessage(), "\n";
}

// Continue execution
echo 'Hello World';
?>

sfrench 2010-01-31 23:11:56

Answer 3

+1 A:

Maybe try disabling certain 3rd party extensions you might have installed? http://bugs.php.net/bug.php?id=41744

chris 2010-02-01 00:57:05

ansaurus

tags:

views:

answers:

Try/Catch block in PHP not catching Exception

related questions