dpl22899 2017-04-11 05:58
浏览 47


This is my HTML code and I wanna replace <a> tag with <img> tag using DOMDocument.

<a href='xxx.com'><img src='yyy.jpg'></a>

Here is the PHP code:

$newNode=cj_DOMinnerHTML($link); //$link refer to anchor tag 
$image_dom = new DOMDocument();
$link->parentNode->replaceChild($image_dom, $link); //this replace making my parent node empty 

cj_DOMinnerHTML is function which return child nodes as HTML.

  • 写回答

1条回答 默认 最新

  • ds78662302 2017-04-11 16:29

    Hello_ mate.

    If I understood you well you want to remove the <a> tags and I don't know what exactly your function cj_DOMinnerHTML is doing, but I see that your are passing instance of DOMDocument to replaceChild method as first argument which is wrong. Refer to documentation to see how exactly is replaceChild working (it accepts two arguments of type DOMNode). Anyway I give you a code snippet that is replacing the <a> tags. Please read the comments that I put in code and try to change the code for your use case.

    $html = '
    <div id="container">
        <a href="xxx.com"><img src="yyy.jpg"></a>
        <a href="aaa.com"><img src="aaa.jpg"></a>
        <a href="bbb.com"><img src="bbb.jpg"></a>
        <a href="ccc.com"><img src="ccc.jpg"></a>
        <a href="ddd.com"><img src="ddd.jpg"></a>
        <a href="eee.com"><img src="eee.jpg"></a>
    // load the dom document
    $dom = new \DOMDocument();
    if (!$dom->loadHTML($html)) {
        echo '<h2>Error handle this ...</h2>';
    // instantiate DOMXPath object
    $finder = new \DOMXPath($dom);
    // get all <a> tags of element that has id="container"
    $anchors = $finder->query("//*[contains(concat(' ', normalize-space(@id), ' '), 'container')]/descendant::a");
    // loop through all <a>
    foreach ($anchors as $a) {
        $parent = $a->parentNode;
        // the following row of code will actually remove the <a> tag
        $parent->replaceChild($a->childNodes->item(0), $a);
    // show output
    echo htmlspecialchars($dom->saveHTML());


    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> 
            <div id="container"> 
                <img src="yyy.jpg"> 
                <img src="aaa.jpg"> 
                <img src="bbb.jpg"> 
                <img src="ccc.jpg"> 
                <img src="ddd.jpg"> 
                <img src="eee.jpg"> 

    I hope you will understand the code and you will be able to modify it to work for your needs.

    Good luck friend!

    本回答被题主选为最佳回答 , 对您是否有帮助呢?



  • ¥15 电脑键盘实现触摸功能
  • ¥25 matlab无法将表达式转换为双数组怎么解决?
  • ¥15 单片机汇编语言相关程序
  • ¥20 家用射频美容仪技术规格
  • ¥15 大家帮我看看为什么错了
  • ¥15 unity互动琴弦抖动效果
  • ¥15 做了个的二极管反向饱和电流测量电路,但是测试达不到效果
  • ¥15 nginx无证书访问https失败
  • ¥15 树莓派启动AP热点传入数据
  • ¥15 multisim中关于74ls192n和DSWPK开关的问题(相关搜索:计数器)