18 $class = get_class($obj);
30 throw new InvalidArgumentException(
'Unexpected Object');
41 $class = get_class($obj);
51 throw new InvalidArgumentException(
'Unexpected Object');
63 foreach($options as $key =>$option){
67 $ret.= ctype_digit($option) ? $option :
' "'.$option.
'" ';
82 foreach($objects as $obj){