handling warnings, php5?

[Sergei Shelukhin]

Hi.
I need to handle warnings in incorrect regular expressions executed
using preg_match.
Warnings shouldn't appear, instead I want to output some generic
message like: "Bad regex: $regex" and also do a database change.
I tried using try-catch but warnings are not caught.
What do I do?

[Schraalhans Keukenmeester]

At Sun, 10 Jun 2007 05:36:11 -0700, Sergei Shelukhin let h(is|er) monkeys
type:

Hi.
I need to handle warnings in incorrect regular expressions executed
using preg_match.
Warnings shouldn't appear, instead I want to output some generic
message like: "Bad regex: $regex" and also do a database change.
I tried using try-catch but warnings are not caught.
What do I do?

You can suppress warnings by setting the proper error_reporting() level
(see manual), or by prepending your function call with @.

Then check for the returned value by the regex function and use
trigger_error('Your message',E_USER_WARNING). (Again, see manual for
details)

if (! @preg_match($pattern,$string,$match_arr) {
trigger_error ('Blahblah', E_USER_WARNING);
}

--
Schraalhans Keukenmeester - sc*********@the.Spamtrapexample.nl
[Remove the lowercase part of Spamtrap to send me a message]

"strcmp('apples','oranges') < 0"

[gosha bine]

On 10.06.2007 14:36 Sergei Shelukhin wrote:

Hi.
I need to handle warnings in incorrect regular expressions executed
using preg_match.
Warnings shouldn't appear, instead I want to output some generic
message like: "Bad regex: $regex" and also do a database change.
I tried using try-catch but warnings are not caught.
What do I do?

The "natural" way is to use exceptions. First, install generic
errors-to-exceptions handler (see Exceptions man page). Then, just
enclose preg code in a try-catch block:

try {
preg_match($regex, ...)
} catch(ErrorException $e) {
echo "Bad regex: $regex";
}

--
gosha bine

extended php parser ~ http://code.google.com/p/pihipi
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