Doc #52338 [Opn->Csd]: Handeling @ supressed errors in custom error handlers

Edit report at http://bugs.php.net/bug.php?id=52338&edit=1 ID: 52338 Updated by: degeberg@php.net Reported by: darren at powerssa dot com Summary: Handeling @ supressed errors in custom error handlers -Status: Open +Status: Closed Type: Documentation Problem Package: Documentation problem Operating System: OSX PHP Version: 5.3.2 -Assigned To: +Assigned To: degeberg New Comment: Thank you for your report. I've improved the example to check if the $errno is included in the error_reporting setting. It should show up in the manual within a week. Previous Comments: ------------------------------------------------------------------------ [2010-07-25 13:20:20] degeberg@php.net Automatic comment from SVN on behalf of degeberg Revision: http://svn.php.net/viewvc/?view=revision&amp;revision=301531 Log: Improved example in set_error_handler(). Fixes PHP bug #52338. ------------------------------------------------------------------------ [2010-07-14 18:40:08] darren at powerssa dot com Description: ------------ The error suppression docs do not describe how the @ suppression affects custom error functions and that the error will still be passed to custom error handlers regardless of the @ suppression. As per my comment below it would be useful to have an example of how to check for suppressed errors in a custom error hanler. After some time investigating as to why I was still getting errors that were supposed to be suppressed with @ I found the following. 1. If you have set your own default error handler then the error still gets sent to the error handler regardless of the @ sign. 2. As mentioned below the @ suppression only changes the error level for that call. This is not to say that in your error handler you can check the given $errno for a value of 0 as the $errno will still refer to the TYPE(not the error level) of error e.g. E_WARNING or E_ERROR etc 3. The @ only changes the rumtime error reporting level just for that one call to 0. This means inside your custom error handler you can check the current runtime error_reporting level using error_reporting() (note that one must NOT pass any parameter to this function if you want to get the current value) and if its zero then you know that it has been suppressed. <?php // Custom error handler function myErrorHandler($errno, $errstr, $errfile, $errline) { if ( 0 == error_reporting () ) { // Error reporting is currently turned off or suppressed with @ return; } // Do your normal custom error reporting here } ?> For more info on setting a custom error handler see: http://php.net/manual/en/function.set-error-handler.php For more info on error_reporting see: http://www.php.net/manual/en/function.error-reporting.php Test script: --------------- <?php // Custom error handler function myErrorHandler($errno, $errstr, $errfile, $errline) { if ( 0 == error_reporting () ) { // Error reporting is currently turned off or suppressed with @ return; } // Do your normal custom error reporting here } ?> ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=52338&edit=1