CODEWITHSUNDEEP
phpxpath
swudev
swudev

Reputation: 283

PHP xpath to extract value from webpage of a specific ID

I need some assistance with xpath to extract a value $283 out of an html page.

Here's my PHP

$html = file_get_contents("https://test.com/testpage.php");
$html = tidy_repair_string($html);
$doc = new DomDocument();
$doc->loadHtml($html);
$xpath = new DomXPath($doc);

$avg = $xpath->evaluate('string(//*[@id="Average"]/@value)');
echo $avg;

Here is the HTML

<div class="List">
    <span class="bold">Avg</span> 
    <span id="Average">$283</span>
</div>

Thanks in advance.

Upvotes: 6

Views: 7016

Answers (1)

Gilles Qu&#233;not
Gilles Qu&#233;not

Reputation: 184955

Try this XPath expression :

//div[@class="List"]/span[@id="Average"]

or simply :

//*[@id='Average']

This is a full working code :

<?php
$doc = new DOMDocument();
$doc->loadHTMLFile('http://127.0.0.1/test.html');

$xpath = new DOMXpath($doc);

$elements = $xpath->query("//*[@id='Average']");

if (!is_null($elements)) {
    foreach ($elements as $element) {
        $nodes = $element->childNodes;
        foreach ($nodes as $node) {
            echo $node->nodeValue. "\n";
        }
    }
}
?>

Just replace URL with your own.

Upvotes: 10

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