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    <p>There are two parts to your question; 1 - Detecting which query to run and 2 - Displaying the results dynamically.</p> <p><strong>Part 1: Detecting which query to run:</strong></p> <p>Given hard-coded choices and no parameters for the query, using your above code, you can determine which query to run using the following:</p> <p>For the HTML part, as part of a form, create the select as you did above (but with a name)</p> <pre><code>&lt;select name="querySelect"&gt; &lt;option value="a"&gt;A&lt;/option&gt; &lt;option value="b"&gt;B&lt;/option&gt; &lt;/select&gt; </code></pre> <p>And in the PHP:</p> <pre><code>$querySelect = $_GET['querySelect']; switch($querySelect) { case 'a': $sql = "SELECT * FROM TableA"; break; case 'b': $sql = "SELECT * FROM TableB"; break; } $results = mysql_query($sql); </code></pre> <p><strong>Part 2: Displaying the results dynamically</strong></p> <p>With the <code>$results</code>, what you do with the data very much depends on what you want to achieve. At a very basic level, you can do the following to dynamically display a table of the results:</p> <pre><code>if(mysql_num_rows($results) &gt; 0) { $header = false; print "&lt;table&gt;" while($row = mysql_fetch_assoc($results)) { if(!$header) { $headings = array_keys($row); print "&lt;tr&gt;"; for($i=0;$i&lt;count($headings);$i++) { print "&lt;th&gt;".htmlspecialchars($headings[$i])."&lt;/th&gt;"; } print "&lt;/tr&gt;"; $header = true; } print "&lt;tr&gt;"; foreach($row as $value) { print "&lt;td&gt;".htmlspecialchars($value)."&lt;/td&gt;"; } print "&lt;/tr&gt;"; } print "&lt;/table&gt;" } else print "&lt;h1&gt;No Results Found!&lt;/h1&gt;"; mysql_free_result($results); </code></pre> <p>There is still alot not covered in my answer because I can't say what level of detail is required. You will also need to cover things like your connection to MySQL, error handling, formatting of the table...</p> <p><strong>Update</strong> Hmmm, very interested to know why this has been downvoted. If someone can please explain in comments where I have misinterpreted the question or misguided the user, I would appreciate it.</p>
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    1. PO<select><option> and action associated with them
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    1. USBrendan Bullen
    1. USBrendan Bullen
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      1. VTDownMod
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    1. COI have a problem with this: $querySelect = $_GET['querySelect']; It returns an error UNDEFINED INDEX: QUERYSELECT
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      1. USMateusz
    2. CO@Mateusz The querySelect index for the GET values assumes that you have given your select a name of querySelect. Is that the case?
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