I have an email's HTML body. I need to parse just the unsubscribe link from that. So if at any point in the dom there is some kind of link, containing the word Unsubscribe, I would need to return the URL of that specific link. I tried different regex but I can't seem to find just the unsubscribe URL or sometimes at all.
$regexp = "<a\s[^>]*href=(\"??)([^\" >]*?)\\1[^>]*>(.*(?:unsubscribe).*)<\/a>";
preg_match_all("/$regexp/iU", $body, $matches);
var_dump($matches);
This does not work :/
Thanks
You can use DOMXpath and check if the anchor contains a case-insensitive match to unsubscribe and get the URL using getAttribute to get the value of href .
$data = <<<DATA This is a link <a href="https://stackoverflow.com/">SO</a> and this is <a href="http://test.test">unsubscribe</a> and another and this is <a href="http://test.test">UnSubScribe</a>. DATA; $dom = new DomDocument(); $dom->loadHTML($data); $xpath = new DOMXPath($dom); $query = "//a[contains(translate(., 'UNSUBSCRIBE', 'unsubscribe'),'unsubscribe')]"; $anchors = $xpath->query($query); foreach ($anchors as $a) { echo sprintf("%s: %s" . PHP_EOL, $a->nodeValue, $a->getAttribute("href") ); }Production
unsubscribe: http://test.test UnSubScribe: http://test.testSee a PHP demo .
I couldn't quickly find a solution to your problem with regular expressions alone, so I hope you'll be okay with using a little more PHP than regular expressions.
This is what I came up with:
$regexp = '<a\s+(?:[^>]*?\s+)?href=[\'|"]([^"\']*)[\'|"]>(.*?)<\/a>'; preg_match_all("/$regexp/i", $body, $matches); $urls = $matches[1]; $tagContents = $matches[2]; $unsubscribeUrls = []; for ($i = 0; $i < count($tagContents); $i++) { if(!isset($urls[$i]) || !isset($tagContents[$i])){ continue; } if(stripos($tagContents[$i], "unsubscribe") !== false){ $unsubscribeUrls[] = $urls[$i]; } } var_dump($unsubscribeUrls); This will first match all the tags a into URL and tag content. Then, using PHP, it will check if the content of the tag contains "unsubscribe". Doing so will add it to the $unsubscribeUrls variable. This variable should contain all the URLs you want.