Pear error handler.

chill

Hi,

I am finding it hard to get the grasp with PEAR_Error. Sometimes the MANUAL's or DOC's are not enough. I think there is no good examples or tutorials on how to use PEAR_Error.

A look at the PEAR.php made some sense after all.

Anyway, my goal is to keep a record of all errors occured.
I want to save them into TXT, XML or DB.

Is this how I shold do it:

<? PEAR::setErrorHandling(PEAR_ERROR_CALLBACK, 'SaveError'); ?>

Do I have to use
```
<? error_reporting(E_ALL); ?> 
```
when dealing with PEAR_Error.
Does pear catch the Fatal errors? I remember there was a lack of catching fatal errors in PHP.

thanks,

chill -

ednark

first let me point out that PEAR is not part of PHP, PEAR is a seperate library that people can use or not use. Pear will not catch PHP errors, Pear errors have to specifically be throws by Pear based objects, and don't mean a thing outside of your Pear application.

PHP's error handling does suck, however the 4.30pre that is out now has options for java and python like try/catch statments. yay! will make your life easier.

The Pear concept is even simpler than you think:

the PEAR_ERROR object is nothing special, it is just agreed upon that when you develop off the pear library you use it, or subclass it.

it is formatted to hold basic error information, and error code, and and error message mostly.

there are several error options:

PEAR_ERROR_RETURN
PEAR_ERROR_PRINT
PEAR_ERROR_DIE
PEAR_ERROR_TRIGGER
PEAR_ERROR_CALLBACK

the default is PEAR_ERROR_RETURN, it means if there is a problem somewhere, the PEAR based object should just return an Error object instead of whatever else it was going to return

what you need to know depends on if you are trying to write a new PEAR based class or just use an existing one....

if you are just trying to use a PEAR class below should give you the most common usage case. One which you should probably use if you don't need the other functionality.


/// assuming PEAR_ERROR_RETURN
$result = somePearBasedThing();

if ( PEAR::isError($result) ) {
    echo "<br>Error Code : ". $result->getCode();
    echo "<br>Error Message : ". $result->getMessage()
} else {
}

notice how this code doesn't really try to catch any php error that may happen, it just specifically looks for a pear error.

am i way off base with what you wanted from a post?

chill

Yees - I see.

OK very good - now I just need your confirmation 😉 If I got it right?

1) the PEAR_error is used in the pear classes (packages) like DB, Cache, SOAP and so on...?

2) and I should use PEAR_error methods (or properties) like isError to deal with the errors thorown by the pear classes?

3) I still should roll my own custom error handler (function or class) to deal and save with PHP erros and I can use the same function (or class) to save also the errors thrown by the PEAR classes?

Fair enough.

I think I can see the light at the end of tunnel.

PS. Any examples on how to use the try-catch with pear erros? Anyway – I’ll do some googling on that.

to ednark - this was just what I ws looking for.

Thanks,

ednark

yes you got my point, you can still roll your own error handler if you so wish in general for php...

also for simple logging grep into php.ini, there are error logging facilities built in to php there...