PHP function to get the MIME type of a remote file.

gistfile1.php

function getRemoteMimeType($url) {
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_exec($ch);

    # get the content type
    return curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
}

Note: The downside to this is that curl_exec grabs the entire file first.

PHP's built-in get_headers function should be used if you don't want to grab the whole file.

Note: The downside to this is that curl_exec grabs the entire file first.

PHP's built-in get_headers function should be used if you don't want to grab the whole file.

it's always return "Content-Type" => "application/octet-stream"