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' => '-08-28 00:00:00',
'd' => '/08/438488a00b3219929282e3652061c2e3.png'
),
array(
'a' => 3,
'b' => 'vd',
'c' => '-08-20 00:00:00',
'd' => '/08/438488a00b3219929282e3652061c2e3.png'
),
array(
'a' => 6,
'b' => 'wwe',
'c' => '-08-28 00:00:00',
'd' => '/08/438488a00b3219929282e3652061c2e3.png'
),
array(
'a' => 36,
'b' => 'se',
'c' => '-08-28 00:00:00',
'd' => '/08/438488a00b3219929282e3652061c2e3.png'
),
array(
'a' => 6,
'b' => 'aw',
'c' => '-08-28 00:00:00',
'd' => '/08/438488a00b3219929282e3652061c2e3.png'
),
array(
'a' => 36,
'b' => 'bv',
'c' => '-08-28 00:00:00',
'd' => '/08/438488a00b3219929282e3652061c2e3.png'
),
array(
'a' => 12,
'b' => 'xx',
'c' => '-08-27 00:00:00',
'd' => '/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：
$result= array();
foreach ($infos as $key => $info) {
$result[$info['a']][] = $info;
}
print_r($result);
输出：
Array
(
[36] => Array
(
[0] => Array
(
[a] => 36
[b] => xa
[c] => -08-28 00:00:00
[d] => /08/438488a00b3219929282e3652061c2e3.png
)
[1] => Array
(
[a] => 36
[b] => se
[c] => -08-28 00:00:00
[d] => /08/438488a00b3219929282e3652061c2e3.png
)
[2] => Array
(
[a] => 36
[b] => bv
[c] => -08-28 00:00:00
[d] => /08/438488a00b3219929282e3652061c2e3.png
)
)
[3] => Array
(
[0] => Array
(
[a] => 3
[b] => vd
[c] => -08-20 00:00:00
[d] => /08/438488a00b3219929282e3652061c2e3.png
)
)
[6] => Array
(
[0] => Array
(
[a] => 6
[b] => wwe
[c] => -08-28 00:00:00
[d] => /08/438488a00b3219929282e3652061c2e3.png
)
[1] => Array
(
[a] => 6
[b] => aw
[c] => -08-28 00:00:00
[d] => /08/438488a00b3219929282e3652061c2e3.png
)
)
[12] => Array
(
[0] => Array
(
[a] => 12
[b] => xx
[c] => -08-27 00:00:00
[d] => /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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