Quick tip on finding images within a string. I used this for a WordPress content conversion I did. I needed to find all the images in the post content, then copy them to a new location, and update the content with the new image URL. This works great for content scraping.
If you want to find all the images in string use:
preg_match_all("/http:\/\/www.domain.com\/([\w,\d,\-,\.,\/]+\.(?:jpe?g|png|gif))/iU",$post_content,$matches);
This also works great for any type of media:
preg_match_all("/http:\/\/www.domain.com\/([\w,\d,\-,\.,\/]+\.(?:jpe?g|png|gif|avi|mov|mp3|mp4|m4v|m4a))/iU",$post_content,$matches);
Then if we want to replace any of the these URLs in the content we can use:
preg_replace_callback("/http:\/\/www.domain.com\/([\w,\d,\-,\.,\/]+\.(?:jpe?g|png|gif|avi|mov|mp3|mp4|m4v|m4a))/iU",'url_replace',$post_content);
function url_replace($matches){
//format url to your liking
//$matches contains the results from the preg_replace pattern
return $new_url;
}
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