Re: how catch a warning by file_put_contents() ?

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On 20/08/2011, at 4:51 PM, Andreas wrote:

> Hi,
> I wrote stuff with file_put_contents() in a try{} catch{} and it worked.
> 
> Then I'd like to check what happens when some error occurs so I writeprotected the targetfile.
> Instead of getting my own message by the catch{} block I got a standard warning in the browser.
> 
> Can't I catch those warnings, too?
> And why does this function rise a warning when it can't acomplish it's task?
> 
> 
> Samplecode:
>    try {
>        $msg = date ("d.m.Y H:i:s") . 'This should be stored in the file.';
>        file_put_contents( '/tmp/exceptions.txt', $msg . "\n", FILE_APPEND);
>    }
>    catch ( Exception $e ) {
>        $msg = "Exception " . $e->getCode() . " / " . $e->getMessage();
>        echo "<p>$msg</p>";
>    }

file_put_contents() doesn't throw exceptions. As the note on the exception documentation says: "Internal PHP functions mainly use Error reporting, only modern Object oriented extensions use exceptions."

If you look at the documentation for its return value (http://php.net/file_put_contents), you'll see that false is returned on failure.

In this case, a warning makes more sense than throwing an exception anyway. A warning can be ignored, either by changing the error_reporting level or using the error control operator, whereas an exception must be dealt with or execution halts.
---
Simon Welsh
Admin of http://simon.geek.nz/


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