通过 PHP 在 html 中添加 attr 标签

Question

我想在我的HTML对象中添加另一个属性和值， 但相反，它正在替换当前值。

这是我到目前为止在我的PHP文件中编码的内容。

function htmlEncode ( $html ){
$html = preg_replace('~>s+<~', '><', $html);
$html = html_entity_decode($html);
$dom = new DOMDocument();
$dom->loadHTML($html);
foreach($dom->getElementsByTagName('*') as $div){
foreach ($div->attributes as $attr) {
if($div->nodeName == "h2"){
$class = $attr->nodeName;
$className = $attr->nodeValue;
$div->setAttribute("aria-label", $div->nodeValue);  
$result = [
"tagName" => $div->nodeName, 
"value" => $div->nodeValue, 
$class=> $className, 
$attr->nodeName => $attr->nodeValue
];
} else {
$result[] = [
"tagName" => $div->nodeName, 
"value" => $div->nodeValue,
$attr->nodeName => $attr->nodeValue
];
}
}       
}
$json = json_encode($result, JSON_UNESCAPED_UNICODE);
return $json;
}

但是当我运行代码时

echo json_encode($attr->nodeName);

我得到两个属性：

"类"咏叹调标签">

Answer 1

试试下面的代码。 完成的更改：

1. $class[] = array();
2. $class[$attr->nodeName] = $attr->nodeValue;
3. Removed `class` from results
4. Added 
foreach($class as $key=>$classValues){
if(!empty($classValues)){
$result[$key] = $classValues;     
}
}

完整代码：

function htmlEncode ( $html ){
$html = preg_replace('~>s+<~', '><', $html);
$html = html_entity_decode($html);
$dom = new DOMDocument();
$dom->loadHTML($html);
foreach($dom->getElementsByTagName('*') as $div){
$class[] = array();
foreach ($div->attributes as $attr) {
if($div->nodeName == "h2"){
$class[$attr->nodeName] = $attr->nodeValue;
$div->setAttribute("aria-label", $div->nodeValue);
$result = [
"tagName" => $div->nodeName, 
"value" => $div->nodeValue,
$attr->nodeName => $attr->nodeValue
];
foreach($class as $key=>$classValues){
if(!empty($classValues)){
$result[$key] = $classValues;     
}
}
} else {
$result[] = [
"tagName" => $div->nodeName, 
"value" => $div->nodeValue,
$attr->nodeName => $attr->nodeValue
];
}
}       
}
$json = json_encode($result, JSON_UNESCAPED_UNICODE);
return $json;
}

Answer 2

尝试添加新行

$div->setAttribute("class", $div->nodeValue);
$div->setAttribute("aria-label", $div->nodeValue);