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下面是我的数组示例。我想每次在数组中都有一个user_id。我想每次在数组中都有一个user_id。在PHP中的多维数组中重复计数值
Array
(
[0] => Array
(
[user_id] => 57002892
[page_id] => 109446562415595
)
[1] => Array
(
[user_id] => 515576073
[page_id] => 109446562415595
)
[2] => Array
(
[user_id] => 560299932
[page_id] => 109446562415595
)
[3] => Array
(
[user_id] => 607960053
[page_id] => 109446562415595
)
[4] => Array
(
[user_id] => 607960053
[page_id] => 109446562415595
)
)
,这应该输出如下:
Array
(
[0] => Array
(
[user_id] => 57002892
[count] => 1
)
[1] => Array
(
[user_id] => 515576073
[count] => 1
)
[2] => Array
(
[user_id] => 560299932
[count] => 1
)
[3] => Array
(
[user_id] => 607960053
[count] => 2
)
)
这是可能做到?
什么是'$ user_id'?这给了我错误:注意:未定义的变量:user_id – tytyguy 2013-03-11 03:56:00
应该是第4,6和8行中的“$ user_id_hash”。我更新了要反映的答案。 – 2013-03-11 04:03:57