Php regular expression matches the remote image address in the article and downloads the image to the local device.

Php regular expression matches the remote image address in the article and downloads the image to the local device. Today, a simple collection program needs to download the content of the website of the other party, and then save the image in the content to the local server, next, I will introduce you to the specific operation method. the file_get_contents function is used to download images. the specific method is as follows.

Here we use the php regular expression to implement

$ Content = 'here is the content of the article. insert an image here to test '; $ content = stripslashes ($ content); $ img_array = array (); // match all remote images preg_match_all ("/(src | SRC) = [" | '|] {0,} (http ://(. *). (gif | jpg | jpeg | bmp | png)/isU ", $ content, $ img_array ); // matched non-repeated images $ img_array = array_unique ($ img_array [2]); print_r ($ img_array );

The above will match the remote image, and we need to keep it locally. Note the following two points:

1. image storage path (image storage directory)

2. actually accessing the image address

The following is a complete example: (you can save it to the local server and modify the corresponding places for testing)

 Php saves the remote image to the local device. The php regular expression matches the image address in the article.
 $ Value) {$ value = trim ($ value); // read the remote image $ get_file = @ file_get_contents ($ value ); // save to local image name $ imgname = date ("YmdHis "). '_'. rand (10000,999 99 ). ". ". substr ($ value,-3, 3); // the actual file address (including the path and name) saved locally $ fileName = $ imgPath. '/'. $ imgname; // The actual access address $ fileurl = $ imgUrl. "/". $ imgname; // if ($ get_file) {$ fp = @ fopen ($ fileName, "w"); @ fwrite ($ fp, $ get_file); @ fclos E ($ fp) ;}// replace the original image address $ content = ereg_replace ($ value, $ fileurl, $ content) ;}echo $ content;?>