php xpath: query within a query result

Question

I'm trying to parse an html file.

The idea is to fetch the span's with title and desc classes and to fetch their information in each div that has the attribute class='thebest'.

here is my code:

<?php

$example=<<<KFIR
<html>
<head>
<title>test</title>
</head>
<body>
 <div class="a">moshe1
<div class="aa">haim</div>
 </div>
 <div class="a">moshe2</div>
 <div class="b">moshe3</div>

<div class="thebest">
<span class="title">title1</span>
<span class="desc">desc1</span>
</div>
<div class="thebest">
span class="title">title2</span>
<span class="desc">desc2</span>
</div>

</body>
</html>
KFIR;


$doc = new DOMDocument();
@$doc->loadHTML($example);
$xpath = new DOMXPath($doc);
$expression="//div[@class='thebest']";
$arts = $xpath->query($expression);

foreach ($arts as $art) {
    $arts2=$xpath->query("//span[@class='title']",$art);
    echo $arts2->item(0)->nodeValue;
    $arts2=$xpath->query("//span[@class='desc']",$art);
    echo $arts2->item(0)->nodeValue;
}
echo "done";

the expected results are:

title1desc1title2desc2done

the results that I'm receiving are:

title1desc1title1desc1done

salathe · Accepted Answer · 2010-07-06 18:33:29Z

15

Make the queries relative... start them with a dot (e.g. ".//…").

foreach ($arts as $art) {
    // Note: single slash (direct child)
    $titles = $xpath->query("./span[@class='title']", $art);
    if ($titles->length > 0) {
        $title = $titles->item(0)->nodeValue;
        echo $title;
    }

    $descs = $xpath->query("./span[@class='desc']", $art);
    if ($descs->length > 0) {
        $desc = $descs->item(0)->nodeValue;
        echo $desc;
    }
}

edited Jul 6, 2010 at 18:33

answered Jul 6, 2010 at 18:28

salathe

52.1k12 gold badges108 silver badges134 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Gordon · Accepted Answer · 2010-07-06 18:32:41Z

1

Instead of doing the second query try textContent

foreach ($arts as $art) {
    echo $art->textContent;
}

textContent returns the text content of this node and its descendants.

As an alternative, change the XPath to

$expression="//div[@class='thebest']/span[@class='title' or @class='desc']";
$arts = $xpath->query($expression);

foreach ($arts as $art) {
    echo $art->nodeValue;
}

That would fetch the span children of the divs with a class thebest having a class of title or desc.

edited Jul 6, 2010 at 18:32

answered Jul 6, 2010 at 18:24

Gordon

318k76 gold badges548 silver badges566 bronze badges

Collectives™ on Stack Overflow

php xpath: query within a query result

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related