Home > Backend Development > PHP Tutorial > PHP regular expression extraction image url program

PHP regular expression extraction image url program

PHP中文网
Release: 2023-02-28 18:46:01
Original
1828 people have browsed it

先用正则表达式获取IMG标签,然后把每个IMG标签的SRC抽取出来,并且组合成自己的内容,最后进行替换

我想对 html 的图片进行提取.

<img ico src="/noavatar_small.gif" />
<img src="/noavatar_small.gif" />
Copy after login

如上地址. 我想全部提取出来 但是包含'ico' 的地址 忽略. 求正则 , 就是有些图片 提取.有些不提取.

例子:

<s*imgs+[^>]*?srcs*=s*(&#39;|")(.*?)\1[^>]*?/?s*>
Copy after login

经改进后..

正确解答如下

/<img(?:(?!(ico)).)+/>/
Copy after login

实例

//要替换的内容 
$content = &#39;<img alt="" src="js/fckeditor/UserFiles/image/F201005201210502415831196.jpg" width="600" height="366"><br><br><br><br><img alt="" src="js/fckeditor/UserFiles/image/33_avatar_middle.jpg" width="120" height="120">&#39;;

//提取图片路径的src的正则表达式
preg_match_all("/<img(.*)src="([^"]+)"[^>]+>/isU",$content,$matches);

$img = "";
if(!empty($matches)) {
//注意,上面的正则表达式说明src的值是放在数组的第三个中
$img = $matches[2];
}else {
$img = "";
}
if (!empty($img)) {
$img_url = "http://".$_SERVER[&#39;SERVER_NAME&#39;];

$patterns= array();
$replacements = array();

foreach($img as $imgItem){

$final_imgUrl = $img_url.$imgItem;
$replacements[] = $final_imgUrl;

$img_new = "/".preg_replace("///i","/",$imgItem)."/";
$patterns[] = $img_new;

}

//让数组按照key来排序
ksort($patterns);
ksort($replacements);

//替换内容
$vote_content = preg_replace($patterns, $replacements, $content);
Copy after login

相关文章:

php正则表达式提取html标签的问题

提取html标签的php代码示例

通过php提取HTML标签

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template