php 下划线和驼峰相互转换

/* * 下划线转驼峰 */ private function convertUnderline($str) { $str = preg_replace_callback('/([-_]+([a-z]{1}))/i',function($matches){ return strtoupper($matches[2]); },$str); return $str; } /* * 驼峰转下划线 */ private function humpToLine($str){ $str = preg_replace_callback('/([A-Z]{1})/',function($matches){ return '_'.strtolower($matches[0]); },$str); return $str; } private function convertHump(array $data){ $result = []; foreach ($data as $key => $item) { if (is_array($item) || is_object($item)) { $result[$this->humpToLine($key)] = $this->convertHump((array)$item); } else { $result[$this->humpToLine($key)] = $item; } } return $result; }