php數組實現根據某個索引值將相同索引值合并產生新二維數組的方法詳解

這篇文章主要介紹了php數組實現根據某個索引值將相同索引值合并產生新二維數組的方法,涉及php數組的遍曆、賦值相關運算技巧,需要的朋友可以參考下

本文執行個體講述了php數組實現根據某個索引值將相同索引值合并產生新二維數組的方法。分享給大家供大家參考，具體如下：

來源資料：

$infos = array(  array(    'a' => 36,    'b' => 'xa',    'c' => '2015-08-28 00:00:00',    'd' => '2015/08/438488a00b3219929282e3652061c2e3.png'  ),  array(    'a' => 3,    'b' => 'vd',    'c' => '2015-08-20 00:00:00',    'd' => '2015/08/438488a00b3219929282e3652061c2e3.png'  ),  array(    'a' => 6,    'b' => 'wwe',    'c' => '2015-08-28 00:00:00',    'd' => '2015/08/438488a00b3219929282e3652061c2e3.png'  ),  array(    'a' => 36,    'b' => 'se',    'c' => '2015-08-28 00:00:00',    'd' => '2015/08/438488a00b3219929282e3652061c2e3.png'  ),  array(    'a' => 6,    'b' => 'aw',    'c' => '2015-08-28 00:00:00',    'd' => '2015/08/438488a00b3219929282e3652061c2e3.png'  ),  array(    'a' => 36,    'b' => 'bv',    'c' => '2015-08-28 00:00:00',    'd' => '2015/08/438488a00b3219929282e3652061c2e3.png'  ),  array(    'a' => 12,    'b' => 'xx',    'c' => '2015-08-27 00:00:00',    'd' => '2015/08/438488a00b3219929282e3652061c2e3.png'  ));

處理要求：將數組中a相同的二維數組合并到一個數組中，產生一個新的數組

代碼：

<?php $result= array(); foreach ($infos as $key => $info) {  $result[$info['a']][] = $info; } print_r($result);

輸出：

Array( [36] => Array  (   [0] => Array    (     [a] => 36     [b] => xa     [c] => 2015-08-28 00:00:00     [d] => 2015/08/438488a00b3219929282e3652061c2e3.png    )   [1] => Array    (     [a] => 36     [b] => se     [c] => 2015-08-28 00:00:00     [d] => 2015/08/438488a00b3219929282e3652061c2e3.png    )   [2] => Array    (     [a] => 36     [b] => bv     [c] => 2015-08-28 00:00:00     [d] => 2015/08/438488a00b3219929282e3652061c2e3.png    )  ) [3] => Array  (   [0] => Array    (     [a] => 3     [b] => vd     [c] => 2015-08-20 00:00:00     [d] => 2015/08/438488a00b3219929282e3652061c2e3.png    )  ) [6] => Array  (   [0] => Array    (     [a] => 6     [b] => wwe     [c] => 2015-08-28 00:00:00     [d] => 2015/08/438488a00b3219929282e3652061c2e3.png    )   [1] => Array    (     [a] => 6     [b] => aw     [c] => 2015-08-28 00:00:00     [d] => 2015/08/438488a00b3219929282e3652061c2e3.png    )  ) [12] => Array  (   [0] => Array    (     [a] => 12     [b] => xx     [c] => 2015-08-27 00:00:00     [d] => 2015/08/438488a00b3219929282e3652061c2e3.png    )  ))

以上就是本文的全部內容，希望對大家的學習有所協助。