PHP DomDocument解析html

Question

I have the following HTML markup

<div contenteditable="true" class="text"></div>
<div contenteditable="true" class="text"></div>
<div style="display: block;" class="ui-draggable">
    <img class='avatar' src=""/>
    <p style="">
    <img class='pic' src=""/><br>
    <span class='fulltext' style="display:none"></span>
    </p>-<span class='create'></span>
    <a class='permalink' href=""></a>
    </div>
 <div contenteditable="true" class="text"></div>
 <div style="display: block;" class="ui-draggable">
    <img class='avatar' src=""/>
    <p style="">
    <img class='pic' src=""/><br>
    <span class='fulltext' style="display:none"></span>
    </p><span class='create'></span><a class='permalink' href=""></a>
    </div>

The parent div's can be more.In order to parse the information and to insert it in the DB I'm using the following code -

$dom = new DOMDocument();
$dom->loadHTML($xml);
$xpath = new DOMXPath($dom);
$div = $xpath->query('//div');
$i=0;
$q=1;
foreach($div as $book) {
    $attr = $book->getAttribute('class');
    //if div contenteditable
    if($attr == 'text') {
        echo '</br>'.$book->nodeValue."</br>";  
    }

    else {
        $new = new DOMDocument();
        $newxpath = new DOMXPath($new);
        $avatar = $xpath->query("(//img[@class='avatar']/@src)[$q]");

        $picture = $xpath->query("(//p/img[@class='pic']/@src)[$q]");
        $fulltext = $xpath->query("(//p/span[@class='fulltext'])[$q]");
        $permalink = $xpath->query("(//a[@class='permalink'])[$q]");
        echo $permalink->item(0)->nodeValue; //date
        echo $permalink->item(0)->getAttribute('href');
        echo $fulltext->item(0)->nodeValue;
        echo $avatar->item(0)->value;
        echo $picture->item(0)->value;
        $q++;
    }
    $i++;
}

But I think that there's a better way for parsing the html. Is there? Thank you in advance

Answer 1

Note that DOMXPath::query supports a second param called contextparam. Also you won't need a second DOMDocument and DOMXPath inside the loop. Use:

$avatar = $xpath->query("img[@class='avatar']/@src", $book);

to get <img src=""> attribute nodes relative to the div nodes. If you follow my advices your example should be fine.

---

Here comes a version of your code that follows the above said:

$dom = new DOMDocument();
$dom->loadHTML($xml);

$xpath = new DOMXPath($dom);
$divs = $xpath->query('//div');

foreach($divs as $book) {
    $attr = $book->getAttribute('class');
    if($attr == 'text') {
        echo '</br>'.$book->nodeValue."</br>";  
    } else {
        $avatar = $xpath->query("img[@class='avatar']/@src", $book);
        $picture = $xpath->query("p/img[@class='pic']/@src", $book);
        $fulltext = $xpath->query("p/span[@class='fulltext']", $book);
        $permalink = $xpath->query("a[@class='permalink']", $book);
        echo $permalink->item(0)->nodeValue; //date
        echo $permalink->item(0)->getAttribute('href');
        echo $fulltext->item(0)->nodeValue;
        echo $avatar->item(0)->value;
        echo $picture->item(0)->value;
    }
}