php 过滤掉多维数组空值

//过滤掉空值function filter_array($arr, $values = ['',[]]){foreach ($arr as $k => $v) {if (is_array($v) && count($v)>0) {$arr[$k] = filter_array($v, $values);}foreach ($values as $value) {if ($v === $value) {unset($arr[$k]);break;}}}return $arr;}

//过滤掉空值function filter_array($arr){$narr = array();while(list($key, $val) = each($arr)){if (is_array($val)){$val = filter_array($val);if (count($val)!=0){$narr[$key] = $val;}}else{if (trim($val) != ""){$narr[$key] = $val;}}}unset($arr);return $narr;}