Parses accept headers based on preference

gistfile1.php

/**
 * Returns the Accept options that the client requested
 * This array is seperated by the precedence that the client requested as well.
 * @param string $rawOptions Accept options from the header
 * @return array
 */
function getAcceptOptions($rawOptions) {
	$options = explode(',', $rawOptions);
	$accept = array();
	foreach ($options as $option) {
		if (strpos($option, ';')) {
			list($type, $pref) = explode(';', $option);
			list(, $pref) = explode('=', $pref);
			$accept[(string) $pref][] = $type;
		} else {
			$accept[1][] = $option;
		}
	}

	return $accept;
}