这篇文章主要介绍了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,涉及php数组的遍历、赋值相关运算技巧,需要的朋友可以参考下
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。
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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。