应用范围:淘宝api中用的
function objToArr($obj){
$ret = array();
foreach($obj as $key =>$value){
if(gettype($value) == 'array' || gettype($value) == 'object'){
$ret[$key] = objtoarr($value);
}
else{
$ret[$key] = $value;
}
}
return $ret;
}