Simple Example of PHP extracting arbitrary attributes in image img tags

Copy codeThe Code is as follows:
<? Php

/* PHP Regular Expression extraction Any attribute in the image img mark */

$ Str = '<center> <br/> PHP Regular Expression extraction or image change img any attribute in the tag </center> ';

// 1. Retrieve the entire image code
Preg_match ('/<\ s * img \ s + [^>] *? Src \ s * = \ s * (\ '| \")(.*?) \ 1 [^>] *? \/? \ S *>/I ', $ str, $ match );
Echo $ match [0];

// 2. Obtain the width attribute
Preg_match ('//I ', $ str, $ match );
Echo $ match [1];

// 3. Take the height attribute
Preg_match ('//I ', $ str, $ match );
Echo $ match [1];

// 4. Obtain src
Preg_match ('//I ', $ str, $ match );
Echo $ match [1];

// 1. Replace src = "/uploads/images/20100516000.jpg" with src ="/uploads/uc/images/20100516000.jpg ")
Print preg_replace ('/()/I ', "\$ {1} uc/images/\$ {3}", $ str );
Echo "

// 2. Replace src = "/uploads/images/20100516000.jpg" with src ="/uploads/uc/images/20100516000.jpg" and save the width and height
Print preg_replace ('/(/I ', "\$ {1 }\$ {2} uc/images/\3 {3}>", $ str );

?>