When PHP uses post to transmit data, action = "login. php? Id = 2 ", click submit, $ _ POST [" id "] cannot be displayed, that is, it is not set!

When PHP uses post to transmit data, actionlogin. php ?, Click SUBMIT. $ _ POST [id] cannot be displayed, that is, it is not set! PHP Form action $ _ POST []

PHP sets action = "login. php? Id = 2 ",
Click SUBMIT. $ _ POST ["id"] cannot be displayed, that is, it is not set! But other,
For example, the value of $ _ POST ["name"] exists.

The original plan was to judge by the value of id. However, the same php page processes different requests,
Please help!

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Reply to discussion (solution)

$ _ GET ['id'] is required for parameters above the url;

$ _ GET ['id'] is required for parameters above the url;
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