Parse All Links That Contain A Specific Word In “href” Tag [duplicate]

Answer 1

Instead of first fetching all the a elements and then filtering out the ones you need you can query your document for those nodes directly by using XPath:

//a[contains(@href, "link:")]

This query will find all a elements in the document which contain the string link: in the href attribute.

To check whether the href attribute starts with link: you can do

//a[starts-with(@href, "link:")]

Full example (demo):

$dom = new DomDocument();
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
foreach ($xpath->query('//a[contains(@href, "link:")]') as $a) {
    echo $a->getAttribute('href'), PHP_EOL;
}

Please also see

• Implementing condition in XPath
• excluding URLs from path links?
• PHP/XPath: find text node that "starts with" a particular string?
• PHP Xpath : get all href values that contain needle

for related questions.

Note: marking this CW because of the many related questions

Answer 2

By using a condition.

<?php 
$lookfor='/link:';

foreach ($urls as $url){
    if(substr($url->getAttribute('href'),0,strlen($lookfor))==$lookfor){
        echo "<br> ".$url->getAttribute('href')." , ".$url->getAttribute('title');
        echo "<hr><br>";
    }
}
?>

Answer 3

As getAttribute simply returns a string you only need to check what it starts with with strpos().

$href = $url -> getAttrubute ('href');
if (strpos ($href, '/link:') === 0)
{
    // Do your processing here
}

Answer 4

Use regular expressions.

foreach ($urls as $url)
{
    $href = $url->getAttribute('href');
    if (preg_match("/^\/link:/",$href){
        $links[$url->getAttribute('title')] = $href;
    }
}

$links array contains all of the titles and href's that match.