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                **從一個二維數組中返回指定鍵的所有值** **代碼:** ~~~ function getCols($arr, $col) { $ret = array (); foreach ( $arr as $row ) { if (isset ( $row [$col] )) { $ret [] = $row [$col]; } } return $ret; } ~~~ **調用:** ~~~ $rows = array( array('id' => 1, 'value' => '1-1'), array('id' => 2, 'value' => '2-1'), ); $values =getCols($rows, 'value'); dump($values); // 輸出結果為 array( '1-1', '2-1', ) ~~~
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