Option Search Bar in html that searches using different attributes - php

Question

I want to make a search bar in a table called items with two different options: IID, Type. The code is below.
<h1> Search </h1>
<form name="search" action="items.php" method="get">
Search For: <input type="text" name="item"> in
<select name = "Option">
<option value= "IID"> IID </option>
<option value= "Type"> Type </option>
</select>
<input type="submit" value="search">
</form>
The data is stored as a table called Item with attributes IID and type.
I then do a query, but I'm getting lost here on how to change the select clause.
I have the code here so that it searches for item(s) with a certain type the user inputs, but how can I also change the clause so that it corresponds to the option menu in the search bar where you can find items with IID? Would I have to write 2 different queries?
Any help would be appreciated!
<?php
//SEARCH by type
$item = ucfirst($_GET["item"]);
if($item != null){
$result = executePlainSQL("select * from item where type = '" . $item . "'");
}
else{
$result = executePlainSQL("select * from item");
}
printItem_byType($result);
//Print result
function printItem_byType($result){
echo '<table>';
echo '<tr><td>IID</td><td>Type</td></tr>';
while ($row = OCI_Fetch_Array($result, OCI_BOTH)) {
echo "<tr><td>" . $row[0] . "</td>
<td>" . $row[1] . "</td>
<td><a href= profile.php?type= ". $row[2] . ">" $row[2] . "</td></tr>";
}
echo '</table>';
}

Answer 1

//SEARCH by type
$item = ucfirst($_GET["item"]);
$option = $_GET["option"];
if($item != null){
$result = executePlainSQL("select * from item where type = '" . $item . "' and filter_by = '" . $option . "'");
}
else{
$result = executePlainSQL("select * from item");
}
then add one colum called "filter_by" on the sql table.