preg_match某些img文件类型

Question

need some help with this bit of pregmatch where I want to look for a specific filetype (jpg, jpeg, png). Any help would be appreciated.

The code:

$strmatch='^\s*(?:<p.*>)?\<a.*href="(.*)">\s*(<img.*src=[\'"].*[\'"]\s*?\/?>)[^\<]*<\/a\>\s*(.*)$';

if (preg_match("/$strmatch/sU", $content, $matches)) { 
        $leadMatch=1;
    }

Right now it does as it is supposed to and returns images, but I want to be able to set image type (ie make it so it doesn't look for .gif)

Thx in advance.

EDIT: Alternatively could it be possible to insert a specific img alt tag to look for, for example alt="thisImage"?

Answer 1

Try this one:

$strmatch='/^\s*(?:<p.*>)?\<a.*href="(.*)">\s*(<img[\sa-z0-9="\']+src="([a-z0-9]+\.[jpeg]{3,4})"[\sa-z0-9="\']*>)[^\<]*<\/a\>\s*(.*)$/ui';

• NOTE i have put the modifiers on the $strmatch at the end, you should use u-ngreedy and i-nsentive(case)