php数组实现根据某个键值将相同键值合并生成新二维数组的方法详解

本文实例讲述了php数组实现根据某个键值将相同键值合并生成新二维数组的方法。分享给大家供大家参考，具体如下：

源数据：

$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'
  )
);

处理要求：将数组中a相同的二维数组合并到一个数组中，生成一个新的数组

代码：

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

输出：

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内容，希望对大家的学习有所帮助。

相关推荐：

PHP在线调试执行的实现方法(附demo源码)_php技巧

php实现按天数、星期、月份查询的搜索框_php技巧

PHP实现的进度条效果详解_php技巧

以上就是php数组实现根据某个键值将相同键值合并生成新二维数组的方法详解的详细内容，更多请关注php中文网其它相关文章！