在項目中遇到需要把游戲進行字母排序,于是百度到一個格式化的首字母的方法。
/*** @name php獲取中文字符拼音首字母* @param $str* @return null|string*/public function getFirstCharter($str){if (empty($str)) {return '';}$fchar = ord($str{0});if ($fchar >= ord('A') && $fchar <= ord('z')) {return strtoupper($str{0});}$s1 = iconv('UTF-8', 'gb2312', $str);$s2 = iconv('gb2312', 'UTF-8', $s1);$s = $s2 == $str ? $s1 : $str;$asc = ord($s{0}) * 256 + ord($s{1}) - 65536;if ($asc >= -20319 && $asc <= -20284) {return 'A';}if ($asc >= -20283 && $asc <= -19776) {return 'B';}if ($asc >= -19775 && $asc <= -19219) {return 'C';}if ($asc >= -19218 && $asc <= -18711) {return 'D';}if ($asc >= -18710 && $asc <= -18527) {return 'E';}if ($asc >= -18526 && $asc <= -18240) {return 'F';}if ($asc >= -18239 && $asc <= -17923) {return 'G';}if ($asc >= -17922 && $asc <= -17418) {return 'H';}if ($asc >= -17417 && $asc <= -16475) {return 'J';}if ($asc >= -16474 && $asc <= -16213) {return 'K';}if ($asc >= -16212 && $asc <= -15641) {return 'L';}if ($asc >= -15640 && $asc <= -15166) {return 'M';}if ($asc >= -15165 && $asc <= -14923) {return 'N';}if ($asc >= -14922 && $asc <= -14915) {return 'O';}if ($asc >= -14914 && $asc <= -14631) {return 'P';}if ($asc >= -14630 && $asc <= -14150) {return 'Q';}if ($asc >= -14149 && $asc <= -14091) {return 'R';}if ($asc >= -14090 && $asc <= -13319) {return 'S';}if ($asc >= -13318 && $asc <= -12839) {return 'T';}if ($asc >= -12838 && $asc <= -12557) {return 'W';}if ($asc >= -12556 && $asc <= -11848) {return 'X';}if ($asc >= -11847 && $asc <= -11056) {return 'Y';}if ($asc >= -11055 && $asc <= -10247) {return 'Z';}return '其他';}
上面的過濾只能過濾到一部分,由于使用中文作為key的時候可能會有各種問題,于是我進行了再排序過濾。
/*** 格式化游戲專區* Author LHC* DateTime 2017-06-04T15:48:59+0800*/public function formatGameCharter($gameData){if (empty($gameData)) {return $gameData;}$keyArr = [];$gameZone = [];foreach ($gameData as $game) {$key = $this->getFirstCharter($game['name']);if (in_array($key, $keyArr)) {$gameZone[$key]['key'] = $key;$gameZone[$key]['list'][] = ['gameId' => intval($game['id']),'appId' => intval($game['appId']),'gameName' => $game['name'],];} else {$keyArr[] = $key;}}array_multisort($gameZone);$gameZone = array_values($gameZone);return $gameZone;}
也有一種辦法是先把26個字母跟其他先組合好一個數組,再遍歷插入數組里面,這樣做的不好的地方我覺得是如果某個字母下面的游戲為空時,該字母下面空蕩蕩的不好看,當然還是要看實際需求,如果你覺得可以解決你的問題,也可以那樣做。