我想删除以下数组的重复项。我想按第一个值分组,然后重建索引。php唯一/组关联数组
即
Array
(
[0] => Array
(
[title] => California
[state_id] => 1
)
[1] => Array
(
[title] => California
[state_id] => 1
)
[2] => Array
(
[title] => New Mexico
[state_id] => 2
)
[3] => Array
(
[title] => Washington
[state_id] => 3
)
[4] => Array
(
[title] => Montana
[state_id] => 4
)
[5] => Array
(
[title] => Montana
[state_id] => 4
)
)
要
Array
(
[0] => Array
(
[title] => California
[state_id] => 1
)
[2] => Array
(
[title] => New Mexico
[state_id] => 2
)
[3] => Array
(
[title] => Washington
[state_id] => 3
)
[4] => Array
(
[title] => Montana
[state_id] => 4
)
)
,重建关键
Array
(
[0] => Array
(
[title] => California
[state_id] => 1
)
[1] => Array
(
[title] => New Mexico
[state_id] => 2
)
[2] => Array
(
[title] => Washington
[state_id] => 3
)
[3] => Array
(
[title] => Montana
[state_id] => 4
)
)
'array_unique':http://php.net/manual/en/function.array-unique.php –
@bat是的,它会 – arnaud576875
@Joseph我必须采取我早先的评论回来。 '当且仅当(string)$ elem1 ===(string)$ elem2时,两个元素被认为是相等的。用词:当字符串表示法是相同的。* *所有*数组都等于'array_unique'。 – deceze