Let's take a look at php to get the regular expressions of all images in the article.
| The code is as follows: |
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$ Body = "China WEB first stop "; Preg_match_all ("/(src | SRC) = [" | '|] {0,} (http ://(. *). (gif | jpg | jpeg | png)/isU ", $ body, $ img_array );
$ Img_array = array_unique ($ img_array [2]); Echo "captured image :";
Print_r ($ img_array ); |
The output result cannot be the image address of your code.
Result./notfound.jpg
The principle is that we can use preg_match_all to obtain the image. However, there will be a difference in wordpress because the image address rules are different. The code is as follows:
| The code is as follows: |
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<? Php
// Search for and obtain images from the document
$ SoImages = '~ ] */> ~ ';
Preg_match_all ($ SoImages, $ post-> post_content, $ Images );
$ PictureAmount = count ($ Images [0]); // Obtain the number of Images
// Process all images
For ($ I = 0; $ I <$ PictureAmount; $ I ++ ){
Echo $ Images [0] [$ I] // process the image. The statement can be customized. The first image is $ Images [0] [0].
}
// Use the switch control statement to process the first image. You can also use if... Else... The elseif statement is used for implementation. You can customize the logic.
Switch ($ PictureAmount> 0 ){
Case 1:
Echo $ Images [0] [0]; // output the first image
Break;
Default:
$ ImagesUrl = bloginfo ('stylesheet _ directory'). "/images/1.jpg"; // Default output image when there is no image in the article
}
/* Get the image link path code in the article
* First, use the first statement to search for and retrieve images from the article.
* Then, analyze the image code by running a regular expression and obtain matching characters.
* Only one of the regular expression codes is listed below. If you are interested, you can write your own
*/
// Obtain an image. For example, obtain the first image $ Images [0] [0]. The sample code is as follows:
$ ImgUrl = $ Images [0] [0];
$ SoImgAddress = "/] *>/I "; // regular expression statement
Preg_match ($ SoImgAddress, $ ImgUrl, $ imagesurl); // analysis
Echo $ imagesurl [1]; // obtain and process the path:/intl/zh-CN/images/logo_cn.gif
?> |
