I have many inputs on my page like
user name
URL
Des
keywords
bl bl
I need to get the meta tags from an URL the user enters in the URL
input with JavaScript or Ajax because I need not to reload the page.
I know I can use get_meta_tags('single_URL');
, but i need to get the metas from the URL on submit :
Here's my code :
function file_get_contents_curl($url)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
$html = file_get_contents_curl("http://example.com/");
//parsing begins here:
$doc = new DOMDocument();
@$doc->loadHTML($html);
$nodes = $doc->getElementsByTagName('title');
//get and display what you need:
$title = $nodes->item(0)->nodeValue;
$metas = $doc->getElementsByTagName('meta');
for ($i = 0; $i < $metas->length; $i++)
{
$meta = $metas->item($i);
if($meta->getAttribute('name') == 'description')
$description = $meta->getAttribute('content');
if($meta->getAttribute('name') == 'keywords')
$keywords = $meta->getAttribute('content');
}
echo "Title: $title". '<br/><br/>';
echo "Description: $description". '<br/><br/>';
echo "Keywords: $keywords";
I would call it as such :
$html = file_get_contents_curl("http://example.com/"); //<< I need to set the url with the user input without reloading the page
What you are looking for is called xhr
, XMLHttpRequest
or more commonly : AJAX .
Assuming you are using JQuery :
Client side :
<script>
function get_metas(){
url = $('#txt_url').val();
$('#result').load('your_script.php?url=' + encodeURIComponent(url));
}
</script>
<form id='search' method='post' onsubmit='get_metas();return false;'>
<input type='text' id='txt_url' name='url'/>
<input type='submit' value='OK'>
</form>
<div id='result'></div>
Server side :
...
$html = file_get_contents_curl($_GET['url']);
...
Be careful though as this can potentially turn your server into a proxy to do bad things.
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