/**
 * input an object, returns a json-ized string of said object
 * 
 * This function doesn't support special UTF-8 characters.
 * 
 * @param mixed $obj The array or object to encode
 * @return string JSON formatted output
 * @author Chip Harlan (Original Creator)
 * @author Jay Williams (Added additional variable types)
 * @link http://www.post-hipster.com/2008/02/15/elegant-little-php-json-encoder/
 */
function php_json_encode($obj) {

	switch (gettype($obj)) {
		case 'object':
			$obj = get_object_vars($obj);	
		case 'array':
			if (array_is_associative($obj)) {
				$arr_out = array();
				foreach ($obj as $key=>$val) {
					$arr_out[] = '"' . $key . '":' . php_json_encode($val);
				}
				return '{' . implode(',', $arr_out) . '}';
			} else {
				$arr_out = array();
				$ct = count($obj);
				for ($j = 0; $j < $ct; $j++) {
					$arr_out[] = php_json_encode($obj[$j]);
				}
				return '[' . implode(',', $arr_out) . ']';
			}
			break;
		case 'NULL':
			return 'null';
			break;
		case 'boolean':
			return ($obj)? 'true' : 'false';
			break;
		case 'integer':
		case 'double':
			return $obj;
			break;
		case 'string':
		default:
			$obj = str_replace(array('\\','/','"',), array('\\\\','\/','\"'), $obj);
			return '"' . $obj . '"';
			break;
	}

}