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 ) ) )

更多关于PHP相关内容感兴趣的读者可查看本站专题：《PHP数组(Array)操作技巧大全》、《php字符串(string)用法总结》、《php常用函数与技巧总结》、《PHP错误与异常处理方法总结》、《PHP基本语法入门教程》、《php面向对象程序设计入门教程》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

希望本文所述对大家PHP程序设计有所帮助。