$ _ GET how to receive the data

$ _ GET how to receive the data, such as clicking a link to send data HTTP_HOST to link. php, and then link. php Redirects to the specified link based on the data. What should I do? PHPcode & lt ;? Phpif (isset ($ _ GET ['param']) {he $ _ GET how to receive the data
For example, click the link to send data HTTP_HOST to link. php.


Link. php then redirects to the specified link based on the data. How can this problem be solved?

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PHP code

  Link
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For example, connect to TEST
// Test. php


  $ Id = @ $ _ GET ['id'];
If ($ id = 5)
Echo "window. location. href = \" test1.html \"";
Else
Echo "window. location. href = \" test2.html \"";
?>