Example. my answer is clothes but I must get 1.
<form method = "post">
<div class="form-group">
<label for="companyType">Company type</label>
<select class="form-control" id="companyType" name="companyType">
<option value="1">clothes</option>
<option value="2">art</option>
<option value="3">furniture</option>
<option value="4">real state</option>
<option value="5">car</option>
<option value="6">electronics</option>
<option value="7">book</option>
<option value="8">toy</option>
<option value="9">building materials</option>
</select>
</div>
<button type="submit" name="companyRegister" class="btn btn-default">Register </button>
</form>
if(isset($_POST['companyRegister'])){
echo data['companyType'];
}