Getting HTTP code in PHP using curl

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I’m using CURL to get the status of a site, if it’s up/down or redirecting to another site. I want to get it as streamlined as possible, but it’s not working well.

<?php
$ch = curl_init($url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_TIMEOUT,10);
$output = curl_exec($ch);
$httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

return $httpcode;
?>

I have this wrapped in a function. It works fine but performance is not the best because it downloads the whole page, thing in if I remove $output = curl_exec($ch); it returns 0 all the time.

Does anyone know how to make the performance better?

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