Simple CSV to array function. if Header == NULL then the first row will be the header.

csv to array with key as header

/**
 * @link https://gist.github.com/michaelcurry/5855818
 */
function csv_to_array($filename, $delimiter = ',', $header = NULL){
	$array = array();
	$rows = file($filename);
	foreach($rows as $line) {
		$tmp = str_getcsv($line, $delimiter);
		if( ! $header ) {
			$header = $tmp;
		} else {
			$array[] = array_combine($header, $tmp);
		}
	}
	return $array;
}