這次帶給大家二維陣列排序函數array_orderby使用案例詳解,二維陣列排序函數array_orderby使用的注意事項有哪些,以下就是實戰案例,一起來看一下。
<?php /** I came up with an easy way to sort database-style results. This does what example 3 does, except it takes care of creating those intermediate arrays for you before passing control on to array_multisort(). */ function array_orderby() { $args = func_get_args(); $data = array_shift($args); foreach ($args as $n => $field) { if (is_string($field)) { $tmp = array(); foreach ($data as $key => $row) $tmp[$key] = $row[$field]; $args[$n] = $tmp; } } $args[] = &$data; call_user_func_array('array_multisort', $args); return array_pop($args); } /* The sorted array is now in the return value of the function instead of being passed by reference. */ $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); // Pass the array, followed by the column names and sort flags $sorted = array_orderby($data, 'volume', SORT_DESC, 'edition', SORT_ASC); print_r($sorted) ?>
運行結果:
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 ) )
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