Get file mime type

mime_type.php

<?php
class mime_type
{
	static function url_mime_type($url)
	{
		$finfo = new \finfo(FILEINFO_MIME_TYPE);
		return $finfo->buffer(file_get_contents($url));
	};

	static function file_mime_type($file_name)
	{
		$file_name = \finfo_file($finfo = \finfo_open(FILEINFO_MIME_TYPE), $file_name) );
		\finfo_close($finfo);
		return $filename;
	}
}