How do I post the textbox value in php?

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PHP

Hi all,

I'm creating two pages in php and I need to post the textbox value in one page to another page.. I've tried,

<form action="test11.php" name="firstSubmit" method="POST">
       				   
                        <p>Total no. of right answers : 
						<input type="text" name="ans" value="<?php echo $right_answer;?>" disabled /></p>
						<p>Total no. of wrong answers : 
                        <input name="wrong" type="text" id="score1" value="<?php echo $wrong_answer;?>" disabled /></p>
						<p>Total no. of unanswered questions : 
                        <input name="unans" type="text" id="score2" value="<?php echo $unanswered;?>" disabled /></p>                
						<button class="btn btn-success btn-block" type="submit">
								Get your certificate
							</button><br><br>
                       
					   </form>

and,

<?php
$s = $_POST['ans'];
?>

But it will shows the error like "Notice: Undefined index: ans in C:\xampp\htdocs\nquiz1\test11.php on line 2".

Help me to do this...


Thanks in advance,
Priya