Many Thanks Nikolay. It seems then that if I'm to avoid the NOTICE errors then isset() should be used as suggested earlier. Not the greatest solution but a working one.
Thanks to all. Ben ----- Original Message ----- From: "Nikolay Bachiyski" <[EMAIL PROTECTED]> To: "Ben Joyce" <[EMAIL PROTECTED]> Sent: Monday, March 15, 2004 2:32 PM Subject: Re: [PHP] use of @ operator to suppress errors > ----- Original Message ----- > From: Ben Joyce <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Monday, March 15, 2004 2:04 PM > Subject: Re: [PHP] use of @ operator to suppress errors > > > > Hmm. I'm confused. > > > > This page... > > http://uk.php.net/manual/en/language.operators.errorcontrol.php > > > > ...says that you can prepend the @ operator to a variable. So with > > @$_GET['this'] it should suppress the NOTICE error if 'this' doesn't > exist. > > > > I've done some testing: > > > > Test #1 > > > > error_reporting(E_ALL); > > echo $_GET['test']; > > > > This generates an on-screen error. > > > > Test #2 > > > > error_reporting(E_ALL); > > echo @$_GET['test']; > > > > The error is suppressed. > > > > If I elect to use a custom error handler then i always get an error > > generated. It makes no difference what the error level is or whether I > use > > the @ operator. > > > > set_error_handler("CustomErrorHandler"); > > error_reporting(E_ALL); > > echo @$_GET['test']; > > > > set_error_handler("CustomErrorHandler"); > > error_reporting(0); > > echo @$_GET['test']; > > > > set_error_handler("CustomErrorHandler"); > > error_reporting(E_ALL); > > echo $_GET['test']; > > > > set_error_handler("CustomErrorHandler"); > > error_reporting(0); > > echo $_GET['test']; > > > > They all have the same result. > > > > I suppose I could handle this in my error handling function, ignoring any > > NOTICE errors, but ideally I'd like to leave it as-is and suppress them > when > > referencing. > > > > I'm not sure if I'm making much sense. Any help appreciated! > > > > Cheers, > > > > Ben > > > > ----- Original Message ----- > > From: "Stuart" <[EMAIL PROTECTED]> > > To: "Ben Joyce" <[EMAIL PROTECTED]> > > Cc: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Sent: Monday, March 15, 2004 12:11 PM > > Subject: Re: [PHP] use of @ operator to suppress errors > > > > > > > Ben Joyce wrote: > > > > i'm using error_reporting(0) and set_error_handler("MyErrorHandler") > to > > > > manage my errors but I'm getting situations where a NOTICE error is > > thrown. > > > > > > > > For example if I refer to $_GET['this'] when there is no 'this' > > querystring > > > > key then i get the error. > > > > > > > > I've tried using @$_GET['this'] but it makes no difference. > > > > > > > > Is this normal? > > > > > > Yes it is. When you use set_error_handler all errors, warnings and > > > notices cause your handler to be called. To detect the use of the @ > > > prefix check the value of error_reporting in your handler - it will be 0 > > > if @ has been used. > > > > > > Richard Davey wrote: > > > > Yes because @ suppresses the errors on function calls, not variables > > > > (which is all $_GET['this'] is). > > > > > > On the contrary, the @ prefix suppresses all errors for the block of > > > code it precedes where a block is a function or variable. Essentially it > > > sets error_reporting to 0 while it evaluates that block. > > > > > > -- > > > Stuart > > > > > > -- > > > PHP General Mailing List (http://www.php.net/) > > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > > > -- > > PHP General Mailing List (http://www.php.net/) > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > > When you are using set_error_handler, the standart PHP error handler is > completely bypassed. Both the error_reporting value (saved in php.ini and > set by the error_reporting() function) and the @ operator will have no > effect onto your handler. Actually the @ error-control operator just sets > error_reporting to 0 while the expression to which it is prepeneded is > interpreted. > > Of course you still could fit your handler to use the error_reporting value > and take the appropriate action. > > Regards, > Nikolay > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
