Question

我试着运行这段代码，但是php抛出：致命错误：在path / to / feature-manager.php中调用未定义的方法DOMNodeList :: getAttribute（）

此文件包含html

＆＃13;

//features.php

<div class="col-md-4">
  <div class="feature">
 <img class="img-fluid" src="media/artwork_icon_512.png" id="feature-icon1">
  <h4>Feature 1</h4>
    </div>
</div><!---->
    
    
<div class="col-md-4">
  <div class="feature">
 <img class="img-fluid" src="media/dress_flat_icon-512.png" id="feature-icon2">
  <h4>Feature 2</h4>
    </div>
</div><!---->
    
   
<div class="col-md-4">
  <div class="feature">
  <img class="img-fluid" src="media/users-512.png" id="feature-icon3">
  <h4>Feature 3</h4>
    </div>
</div>

＆＃13;

然后我把它叫到这个文件

＆＃13;

//feature-manager.php

$read=file_get_contents('../include/features.php');
$features = explode('<!---->', $read);

$doc= new DOMDocument();
foreach ($features as $feature) {
	
$doc->loadHTML($feature);
$img = $doc->getElementsByTagName("img"); 
	$imgsrc = $img->getAttribute('src');
	
echo $imgsrc;

＆＃13;

＆＃13; 很明显，我想从它获得src attrib，但不知何故无法识别getAttribute（）

Answer 1

您必须遍历getElementsByTagName（）的结果

此函数返回一个DomNodeList，getAttribute属于DOMElement

//feature-manager.php

$read=file_get_contents('../include/features.php');
$features = explode('<!---->', $read);

$doc= new DOMDocument();
foreach ($features as $feature) {
	
    $doc->loadHTML($feature);
    $images = $doc->getElementsByTagName("img"); 
    foreach($images as $img){

	    $imgsrc = $img->getAttribute('src');
	    echo $imgsrc;
    }
}

DOMNodeList :: getAttribute未定义

1 个答案: