why $_GET value is different than URL
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I have a url like this

    http://example.com/folder/component/mycom/?insid=7&amp;test=685286640293e700bc9440cafb587290

I need to get value of `test`. When I echo `$_GET['test']` it returns `685286640293e700bc9440cafb587290?url=component/mycom/` . It is happening for last variable of url.I dont know why is this so? 
Thanks