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    <p>.html file</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; $(document).ready(function(){ $("#check").click(function(){ $("#keyvalue").text($("#key").val()); }); $("#submit").click(function(){ var text = $("#text").val(); var key = $("#key").val(); $.ajax({ url: 'trial.php', data: {text: text, key:key}, type: 'POST', dataType: 'json', success: function(data) { if(data.status == "fail"){ $("#status").html(data.message); }else{ $("#status").html(data.message); $("#key").val(data.key); $("#keyvalue").text(''); } } }); return false; }); }); &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;form method="post" action="trial.php" onsubmit="return send_form();"&gt; &lt;input type="text" name="text" id="text"/&gt; &lt;input type="hidden" id="key" name="key" value="xsaigoehf7118191"/&gt; &lt;button id="submit"&gt;Send data and get new key&lt;/button&gt; &lt;/form&gt; &lt;br&gt;&lt;br&gt; &lt;div id="status"&gt;&lt;/div&gt; &lt;br&gt;&lt;br&gt; &lt;button id="check"&gt;What's current value of key?&lt;/button&gt; --------&gt; &lt;span id="keyvalue"&gt;&lt;/span&gt; &lt;div id="response"&gt;&lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>.php</p> <pre><code>&lt;?php //You get the form contents here. $key = isset($_POST['key']) ? $_POST['key'] : "error"; $text = isset($_POST['text']) ? $_POST['text'] : "empty"; //Check them if it matches with DB's entry, if doesn't you set $key = "error"; if($key=="error"){ $status = "fail"; $message = "There was some error processing your form."; exit; } else{ //You generate another random key. $random =''; for ($i = 0; $i &lt; 10; $i++) { $random .= chr(mt_rand(33, 126)); } //Now here in steps save it to your DB. So that when next form is submitted you can match it. //And send back response to html file, where ajax will refresh the key. $status = "success"; $message = " Your form was processed succesfully&lt;br&gt; The text you sent was ".$text.", and the key you sent was ".$key.". The new key sent to you can be seen by pressing the button below, has value, ".$random."&lt;br&gt;&lt;br&gt; "; } echo json_encode(array("status" =&gt; $status, "message" =&gt; $message, "key" =&gt; $random)); ?&gt; </code></pre> <p>Hope this helps you.</p>
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    1. USOptimus Prime
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    1. COThanks you very much for you help , so its allmost what i have but in your php when u check the key i have php function that do it and just return msg text and not generate new key i will show u what i mean in the next answer , again thanks you so much.
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    2. COOkay. Welcome. But a suggestion please work on your english. ;)
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    3. COyea i know :) i will learn eng :p
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