html - Unable to use regex to search in PHP?
Get the solution ↓↓↓Solution:
Use PHP DOM to parse HTML instead of regex.
For example in your case (code updated to show HTML):
$doc = new DOMDocument();
@$doc->loadHTML(file_get_contents("http://sf.backpage.com/MusicInstruction/"));
$nodes = $doc->getElementsByTagName('div');
for ($i = 0; $i < $nodes->length; $i ++)
{
$x = $nodes->item($i);
if($x->getAttribute('class') == 'cat');
echo htmlspecialchars($x->nodeValue) . "<hr/>"; //this is the element that you want
}
Answer
Solution:
The reason your regex fails is that you are expecting . to match newlines, and it won't unless you use the s modifier, so try
$pattern = "/<div class=\"cat\">(.*)<\/div>/s";
When you do this, you might find the pattern a little too greedy as it will try to capture everything up to the last closing div element. To make it non-greedy, and just match up the very next closing div, add a ? after the *
$pattern = "/<div class=\"cat\">(.*?)<\/div>/s";
This just serves to illustrate that for all but the simplest cases, parsing HTML with regexes is the road to madness. So try using DOM functions for parsing HTML.
Share solution ↓
Additional Information:
Link To Answer People are also looking for solutions of the problem: err_ossl_pem_no_start_line
Didn't find the answer?
Our community is visited by hundreds of web development professionals every day. Ask your question and get a quick answer for free.
Similar questions
Find the answer in similar questions on our website.
Write quick answer
Do you know the answer to this question? Write a quick response to it. With your help, we will make our community stronger.