[Solved] Selection from a drop down menu isn’t being inserted to assigned variable [closed]

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You forgot the method attribute on your <form> tag.

Thing is, by default, the method is set to get, and since your code expects post data, it just doesn’t save it to the variable.

<form action="Add_Chemical_Inventory.php" method="post"></form>

solved Selection from a drop down menu isn’t being inserted to assigned variable [closed]