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    <p>you don't want to include a hidden value for the right answer as anyone can check the source. you want to add a parameter 'name' to your radio buttons and include a hidden value for the question number to check against it's correct value in check_value.php. In your example you do a SELECT * // WHERE sual_id=1; I assume that the id relates to the question number. In addition you should value your radio buttons as 0, 1, 2 instead of storing entire strings in there as comparing strings takes longer.</p> <pre><code>&lt;input type="radio" name="answer" value="'.$answer0.'"&gt;'.$answer0."&lt;br&gt;"; &lt;input type="radio" name="answer" value="'.$answer1.'"&gt;'.$answer1."&lt;br&gt;"; &lt;input type="radio" name="answer" value="'.$answer2.'"&gt;'.$answer2."&lt;br&gt;"; &lt;input type="hidden" name="question_number" value="'.$question_number.'" /&gt; </code></pre> <p>when posted to question_check.php, you will have access to $_POST['answer'] and $_POST['question_number']. </p> <pre><code>if(isset($_POST['answer']) &amp;&amp; isset($_POST['question_number'])) { $answer=$_POST['answer']; $question_number=$_POST['question_number']; $result=mysql_query("select 'rightanswer' from sual where sual_id='$question_number'"); if(mysql_num_rows($result)) { $row=mysql_fetch_row($result); if($row[0]==$answer){ //correct answer //$answer_result++; } else { //$answer_result--; } } } else { //no answer and a question number was posted } </code></pre> <p>EDIT: Also I agree that you should look into PDO (php data object) as it's parametrised queries (SELECT something FROM somewhere WHERE something=?) can be bound to variables and the mechanism behind it will render SQL injection attacks useless. Never trust the users!</p>
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    1. COthank u..i understood my mistake.:)my code is working now.thank u again..
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