Du har vel en <form> og en submit button
. Hvis vi nu lige leger din kode ser sådan her ud
<form method="POST" action="senddata.php">
<select name="selectbox" size=10>
<option value="1">1</OPTION>
<option value="2">2</OPTION>
</select>
<input type="submit" name="submit" value="Send">
</form>
i senddata.php skriver du så.
$test = $_POST['selectbox'];
Det skulle virke.
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