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    <p>A <em>very</em> simple approach:</p> <pre><code>&lt;?php $action = 'list'; $arrActions = array ('list', 'add', 'update', 'delete'); if(isset($_GET['action']) &amp;&amp; in_array($_GET['action'],$arrActions)) { include('ajax_action_'.$_GET['action'].'.php'); } else { include('ajax_action_list.php'); } ?&gt; </code></pre> <p>With a simple file iike this you can 'route' your requests to other files ahd have those deal with them internally. There is a lot more to consider, but if you're starting out, keep it simple like this and then you'll be able to pick up elements you need specifically for your application in due time.</p> <p><strong>UPDATE</strong></p> <p>An issue was raised about number of files:</p> <p>This might help:</p> <pre><code>&lt;?php include("connection.php"); class controller { private $arrMethods = array('get','list','add','update','delete'); public function __construct() { if(isset($_GET['action'])) { $method = 'do'.ucwords($_GET['action']); // list=&gt;List, add=&gt;Add, etc if(method_exists($method,$this)) { $this-&gt;$method(); } } public function doGet () { $q=(int)(isset($_GET['q']) ? $_GET["q"] : 0); if(0 &lt; (int)$q) { $query="SELECT * FROM `contacts` WHERE `id` = '$q'"; // limit to 1? $result = mysql_query($query); if($result &amp;&amp; mysql_error()=='' &amp;&amp; mysql_num_rows($result) &gt; 0) { while($row = mysql_fetch_array($result)) { echo "Name: " . stripslashes($row['first']) . " &lt;br /&gt;"; echo "Surname: " . stripslashes($row['last']) . " &lt;br /&gt;"; } } mysql_close(); } } public function doList () { } public function doAdd () { } public function doEdit () { } public function doDelete () { } } $objController = new controller(); ?&gt; </code></pre> <p>This now becomes your gateway script with each function separated out.</p> <p>Does this give you a better starting point?</p>
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    1. POMySQL/PHP: Adding, updating and retrieving data using Ajax but all 3 share the same php file? Is it possible?
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    1. COThank you. I would like to have as less files as possible. Your way seems that I have to still have the same amount of files.
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    2. COAnother way is in my update
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