PHP多維陣列排序 array_multisort()____PHP
來源:互聯網
上載者:User
array_multisort ( array_column ( $tpldata ,
'time_stamp' ),
SORT_DESC , $tpldata ); SORT_DESC 降序;SORT_ASC 升序
time_stamp 排序欄位
多維陣列排序 array_multisort()
用PHP內建array_multisort函數排序 <?php $data = array(); $data[] = array('volume' => 67, 'edition' => 2); $data[] = array('volume' => 86, 'edition' => 1); $data[] = array('volume' => 85, 'edition' => 6); $data[] = array('volume' => 98, 'edition' => 2); $data[] = array('volume' => 86, 'edition' => 6); $data[] = array('volume' => 67, 'edition' => 7); // 取得列的列表 foreach ($data as $key => $row) { $volume[$key] = $row['volume']; $edition[$key] = $row['edition']; } array_multisort($volume, SORT_DESC, $edition, SORT_ASC, $data); print_r($data); ?> 輸出結果: 複製代碼 代碼如下: Array ( [0] => Array ( [volume] => 98 [edition] => 2 ) [1] => Array ( [volume] => 86 [edition] => 1 ) [2] => Array ( [volume] => 86 [edition] => 6 ) [3] => Array ( [volume] => 85 [edition] => 6 ) [4] => Array ( [volume] => 67 [edition] => 2 ) [5] => Array ( [volume] => 67 [edition] => 7 ) ) 關於array_multisort官方文檔也有比較詳細的說明:http://www.php.net/manual/zh/function.array-multisort.php
二、自訂函數排序1 複製代碼 代碼如下:
<?php $data = array(); $data[] = array('volume' => 67, 'edition' => 2); $data[] = array('volume' => 86, 'edition' => 1); $data[] = array('volume' => 85, 'edition' => 6); $data[] = array('volume' => 98, 'edition' => 2); $data[] = array('volume' => 86, 'edition' => 6); $data[] = array('volume' => 67, 'edition' => 7); // 取得列的列表 foreach ($data as $key => $row) { $volume[$key] = $row['volume']; $edition[$key] = $row['edition']; } $ret = arraySort($data, 'volume', 'desc'); print_r($ret); /** * @desc arraySort php二維數組排序 按照指定的key 對數組進行排序 * @param array $arr 將要排序的數組 * @param string $keys 指定排序的key * @param string $type 排序類型 asc | desc * @return array */ function arraySort($arr, $keys, $type = 'asc') { $keysvalue = $new_array = array(); foreach ($arr as $k => $v){ $keysvalue[$k] = $v[$keys]; } $type == 'asc' ? asort($keysvalue) : arsort($keysvalue); reset($keysvalue); foreach ($keysvalue as $k => $v) { $new_array[$k] = $arr[$k]; } return $new_array; } ?>
輸出結果: 複製代碼 代碼如下: Array ( [3] => Array ( [volume] => 98 [edition] => 2 ) [4] => Array ( [volume] => 86 [edition] => 6 ) [1] => Array ( [volume] => 86 [edition] => 1 ) [2] => Array ( [volume] => 85 [edition] => 6 ) [5] => Array ( [volume] => 67 [edition] => 7 ) [0] => Array ( [volume] => 67 [edition] => 2 ) ) 這個自訂函數與系統函數的一個區別就是:自訂函數只支援針對某一個key的排序,如果要支援多個key的排序需要執行多次; 而系統函數array_multisort可以一次性對多個key且可以指定多個定序,系統函數還是相當強大的,推薦使用系統函數,畢