? < PHP // crawl page picture when the picture to prevent 403 (to prevent hotlinking) echo "<Meta name = 'referrer' Content = 'NO-referrer'>" ; $ List = file_get_contents ( $ url ); $ k = preg_match_all ( '/ <IMG [^>] * \ /> /', $ List , $ Data ); $ m = preg_grep ( '/ Alt /', $ Data [0 ]); the foreach ( $ m AS $ V ) { echo $ V '<br>'. ; }