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Re: Failed @getimagesize() print to error_log? [message #173067 is a reply to message #173066]

Sun, 20 March 2011 02:44

Jerry Stuckle
Messages: 2598
Registered: September 2010

Karma:

Senior Member

On 3/19/2011 9:58 PM, jwcarlton wrote:
> I have the following in a script:
>
> if (($image)&& (@getimagesize("/home/myaccount/www/thumbs/$image")))
> $height = "75";
>
> else {
> $image = "noimage.gif";
> $height = "75";
> }
>
>
> And I have a gazillion of these in my error log:
>
> File does not exist: /home/myaccount/public_html/thumbs/
> some_image_name.jpg
>
>
> This is the only script that refers to the "thumbs" directory (as far
> as I know), so I'm pretty sure that this is the culprit.
> Unfortunately, the error_log isn't giving a referer, so I'm not 100%
> sure that the references aren't coming from something like Google
> Images.
>
> Would a failed @getimagesize() write to the error_log? If so, would it
> be better to use is_readable()?
>
> if (($image)&& (is_readable("/home/myaccount/www/thumbs/$image")))

First of all, why are you using '@' to potentially hide errors? You
should not be using this; you need error messages displayed on your
development system. Rather, disable the displaying of error messages in
the php.ini of your production system.

And yes, a failed getimagesize() obviously writes to the error log. And
you won't get a referrer; getimagesize() is completely independent of
any web server.

is_readable() will help you determine if it's a file and is readable,
but it won't tell you whether it is a valid image file or not. But if
the only files in this directory are image files, you should be ok.

So the question is - does the file exist? Is it an image file? You can
check to see if the file exists with file_exists(), but you can't easily
tell if it is an image file or not.

If you really need to find out who the referrer is (does it make a
difference?), check the time of the error message and see what's
happening at that time in your web server access log. It should tell
you more about the request.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
==================

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[Message index]

		Failed @getimagesize() print to error_log? By: jwcarlton on Sun, 20 March 2011 01:58
		Re: Failed @getimagesize() print to error_log? By: Jerry Stuckle on Sun, 20 March 2011 02:44
		Re: Failed @getimagesize() print to error_log? By: jwcarlton on Sun, 20 March 2011 09:31
		Re: Failed @getimagesize() print to error_log? By: Jerry Stuckle on Sun, 20 March 2011 12:34
		Re: Failed @getimagesize() print to error_log? By: jwcarlton on Sun, 20 March 2011 22:24
		Re: Failed @getimagesize() print to error_log? By: Jerry Stuckle on Sun, 20 March 2011 23:56
		Re: Failed @getimagesize() print to error_log? By: Denis McMahon on Sun, 20 March 2011 17:24
		Re: Failed @getimagesize() print to error_log? By: jwcarlton on Sun, 20 March 2011 22:28
		Re: Failed @getimagesize() print to error_log? By: Gordon Burditt on Tue, 29 March 2011 07:11

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