PHP - problemas con tildes

<meta http-equiv="Content-type" content="text/html; charset=utf-8" />

header("Content-Type: text/html;charset=utf-8");

$variable = utf8_decode($variable);

function file_get_aemet_contents_curl($url) {

		$ch = curl_init();    // initialize curl handle

		curl_setopt($ch, CURLOPT_URL, $url); // set url to post to

		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); // return into a variable

		curl_setopt($ch, CURLOPT_TIMEOUT, 4); // times out after 4s

		$result = curl_exec($ch); // run the Dhole process

		return utf8_encode($result);

	}