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19 Responses to PHP try..catch syntax weirdness

1. 433 Stefan 2007-05-03 5:19 am

   I don't know if this was a serious question or not, but I have the weird feeling that you can't mix the short (no { }) notation with the usage of brackets earlier in the same statement.

2. 434 Mathieu Kooiman 2007-05-03 5:19 am

   Well, dealing with an exception in a decent manner probably requires more than one line in most cases :).

3. 431 Sebastian 2007-05-03 5:47 am

   Inconsitent due to parser inabilities.

   Reminds me of $obj->foo()->bar() not working in PHP 4.x

4. 432 Hans 2007-05-03 6:11 pm

   Yes, if you start looking for consistency in the PHP parser, I think you'll be disappointed :)

5. 430 Daniel Luz 2007-06-28 3:54 pm

   I believe the same applies to C++ and Java. Not sure about their intentions, but maybe it was to enforce clean and explicit code (something that should be very important when dealing with exceptions).

   Stefan, you can mix both notations on if-else blocks, so that's not really the case.

6. 429 Evert 2007-06-28 6:26 pm

   I found out its even the case with javascript.. strange

7. 428 Manjunath 2007-09-07 5:47 am

   Very use full try catch example thankyou.

8. 427 eddie 2007-09-12 2:50 pm

   you must use crurly brackets for the catch as well. the following works fine for me;
   [code]
   // Load the XML source
   $xml = new DOMDocument;
   try{
   global $url,$xml;
   $xml->load($url);
   }catch (Exception $e){
   echo 'failed';
   $xml->load('empty.xml');
   }
   [/code]

9. 424 Jesse Couch Vancouver 2008-02-01 1:23 am

   no big deal, just use braces always.

10. 425 Actionscript 3.0 2008-02-01 1:24 am

    .

11. 426 Snowcore 2008-07-14 11:18 am

    Yes, It's really powerful thing in PHP5 - i like it very much!

12. 423 Jamie 2008-08-28 6:50 am

    I found the same thing, I think its because the try catch functionality is only supported from PHP 5 onwards, I happened to be using PHP 4.4.9

13. 422 Evert 2008-08-28 12:48 pm

    Yea, try..catch on PHP4 will definitely not work.. My note was on some of the little inconsistencies that are in the PHP engine..

14. 421 soumya 2008-11-12 10:36 am

    why we use try catch block and if it is what is the sntax

15. 420 asd 2009-01-15 12:26 pm

    try {

    throw new Exception('unox');

    } catch (Exception $e){
    echo $e->getMessage();
    }

16. 435 tarek 2009-06-23 9:08 am

    You can't use try without the brackets like if or for
    getMessage();
    }
    ?>
    is working fine like this

17. 436 tnt2br 2009-09-02 4:49 am

    You can use the try / catch block when you write one or many exceptions in you Class, for exemple:

    \n";
    } else {
    throw new Exception ("Error: the variable isnt a string.
    \n");
    }
    }
    }

    try{
    $object = new Test();

    // here will echo "Olá Felipe."
    $object->hello("Felipe");

    // here you will have one error.
    // then the catch will send the error message.
    // because the method expect receive a string not an interger
    $object->hello(15);

    }catch (Exception $e){
    echo $e->getMessage() . "\n
    ";
    }
    ?>

    (sorry about my poor english)

18. 437 Evert 2009-12-24 11:17 am

    Oh my.. still comments rolling in on this one.

    Let my try to repeat my point..

    I think it's weird, that try..catch requires brackets, while other control statements such as while, for, foreach & if do not require brackets.

    I have no problem figuring out how exceptions work, but thank you..

19. 7787 Tendulkar 2011-01-13 2:53 pm

    Hi, I am trying the following code, please tell me what's wrong.

    try
    {
    //Dividing 5 by Zero to trigger an exception.
    $num = 5 / 0;
    }
    catch(Exception $e)
    {
    echo "Error Message: " . $e->getMessage();
    }

    Please tell me what is wrong with me code.

    Thanks.