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 store the images in the content on the local server, next, I will introduce to you how to download the content of the website of the other party in a simple collection program today, and then store the images in the content on 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:
| The code is as follows: |
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$ Content = 'here is the content of the article. insert an image here for testing ';
$ 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)
| The code is as follows: |
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Php saves the remote image to the local device. The php regular expression matches the image address in the article.
// Save the remote image in the article to the local device
// Author: yanue;
// Save the directory path of the file (replace it with your own path. you can echo it)
$ Save_path = $ _ SERVER ['document _ root']. 'swfupload/attached /';
// File Save Directory URL
$ Save_url = '/swfupload/attached /';
$ Save_path = realpath ($ save_path ).'/';
// Image storage directory
$ ImgPath = $ save_path. date ("Ymd ");
$ ImgUrl = $ save_url. date ("Ymd ");
// Create a folder
If (! Is_dir ($ imgPath )){
@ Mkdir ($ imgPath, 0777 );
}
$ Content = 'here is the content of the article. insert an image here for testing ';
$ 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 );
// Unlimited time
Set_time_limit (0 );
Foreach ($ img_array as $ key => $ value ){
$ Value = trim ($ value );
// Read remote images
$ Get_file = @ file_get_contents ($ value );
// Save it to the 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;
// Actual access address
$ Fileurl = $ imgUrl. "/". $ imgname;
// File writing
If ($ get_file ){
$ Fp = @ fopen ($ fileName, "w ");
@ Fwrite ($ fp, $ get_file );
@ Fclose ($ fp );
}
// Replace the original image address
$ Content = ereg_replace ($ value, $ fileurl, $ content );
}
Echo $ content;
?>
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