array_unique(删掉相同值)
1：php数据
2:显示
Array
(
[0] => 5
[1] => 5
[2] => 4
[3] => 3
[4] => 4
[5] => 4
[6] => 4
[7] => 6
[8] => 6
[9] => 6
[10] => 3
[11] => 2
[12] => 1
[13] => 6
[14] => 2
[15] => 7
[16] => 2
)
<br>Array
(
[0] => 5
[2] => 4
[3] => 3
[7] => 6
[11] => 2
[12] => 1
[15] => 7
)
<br>5,4,3,6,2,1,7声明：该文观点仅代表作者本人，牛骨文系教育信息发布平台，牛骨文仅提供信息存储空间服务。
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