PHP正则提取网页中的规律a标签，并把A标签改成img打印显示所有图片

[klsfp]

我已经通过php获取到了区间代码：

<?php
    //取得指定位址的内容，并储存至text
    $text=file_get_contents('https://www.qq.com');
    //去除换行及空白字元（序列化内容才需使用）
    //$text=str_replace(array("r","n","t","s"), '', $text);
    //取出div且id为PostContent的内容，并储存至阵列match
    preg_match('/<ul[^>]*id="honey-focus-list"[^>]*>(.*?)广告标签 -->/si',$text,$match);
    
    //印出match[0]
    print($match[0]);
?>

需要把获取到的a标签里data-img值，也就是图片地址，通过img输出显示出来。php怎么写呢：

<a href="https://www.qq.com/b/334728/7555246.html?fpa=15801&fpos=4" mg-stat-lob="fpa=15801&fpos=4" target="_blank" data-img="https://1img.qq.com/preview/cms_icon/2020/2/16/02/20200216222536277.jpg_2048x550.jpg" data-bgcolor="#635cff">

<a href="https://www.qq.com/b/334728/7555246.html?fpa=15801&fpos=4" mg-stat-lob="fpa=15801&fpos=4" target="_blank" data-img="https://1img.qq.com/preview/cms_icon/2020/2/16/02/20200216222536277.jpg_2048x550.jpg" data-bgcolor="#635cff">

[laoyouzhazi]

再用正则一遍不行么

[klsfp]

求代码怎么写啊

[六脉神剑绝学]

后面用replace函数加一行。即可。

[浴火_凤凰]

<?php
header("content-type:text/html,charset=utf-8;");
// $text=file_get_contents('https://www.qq.com');
$text='<a href="https://www.qq.com/b/334728/7555246.html?fpa=15801&fpos=4" mg-stat-lob="fpa=15801&fpos=4" target="_blank" data-img="https://1img.qq.com/preview/cms_icon/2020/2/16/02/20200216222536277.jpg_2048x550.jpg" data-bgcolor="#635cff">测试</a>
 
<a href="https://www.qq.com/b/334728/7555246.html?fpa=15801&fpos=4" mg-stat-lob="fpa=15801&fpos=4" target="_blank" data-img="https://1img.qq.com/preview/cms_icon/2020/2/16/02/20200216222536277.jpg_2048x550.jpg" data-bgcolor="#635cff">测试</a>';

$text=preg_replace('/<a.+data-img="([^"]+)"[^\/]+\/a>/','<img src="$1" />',$text);
echo($text);
        ?>

[董哥007]

可以正则取出地址

preg_match_all("/(?<=data-img=\")[^\s^\"]*/",$str,$matches);