PHP Warning: preg_match()

scottmcclean

Hi,
I am very new to PHP and have the following error that I just dont understand - and hope that someone may be able to help me identify why I am getting this error?

PHP Warning: preg_match() [<a href='function.preg-match'>function.preg-match</a>]: Unknown modifier 'L' in /modules/additional_images.php on line 49

The correspoding code (line 49) is this:
if(preg_match('/\Q' . $products_image_base . '\E/i', $file) == 1) {

Many thanks in advance

bradgrafelman

For one, it's likely that $products_image_base contains the character you're using to delimit the regexp pattern, meaning you should have used something like [man]preg_quote/man to escape any regexp-sensitive characters in the string.

However, why are you using regular expressions at all? Why not just use something like [man]stripos/man instead?

scottmcclean

Hi - thanks for your reply.

I am not 100% sure what you mean - I am very new to PHP and this is an inherited site.

I use "_" in my image names - is that what could be the problem? How would I use the preg_quote() to escape any regexp-sensitive characters in the string?

Again thanks for your help.

johanafm

Have you read the documentation for preg_quote?

scottmcclean

Hi - yes, I have just taken a look.

Doesnt make much sense to me to be honest. I guess though what it does tell me is that it doesnt like "_" in my image names, so maybe the best option is to change the image names!

Thanks for your help.

johanafm

scottmcclean;10990314 wrote:
I guess though what it does tell me is that it doesnt like ""

I very much doubt that. - perhaps, but not .

scottmcclean;10990314 wrote:
so maybe the best option is to change the image names!

or the best option might actually be to use preg_quote! It is why it's there after all... Just be sure to supply the pattern delimiter as second parameter, since this (most likely) is causing your problem.