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  1. <?php
  2.  
  3. include("connect.php"); 
  4.  
  5. if (isset($_POST['usernam'])) 
  6. {
  7. 	$usernam = mysqli_real_escape_string($_POST['usernam']);
  8. 	if(ctype_alnum($usernam)) 
  9. 	{
  10. 	    $check = mysqli_query("SELECT usernam FROM users WHERE usernam='$usernam'");
  11. 	    if(mysqli_num_rows($check)==1)
  12. 	    {
  13. 	        $get = mysqli_fetch_assoc($check);
  14. 	        $usernam = $get['usernam'];
  15. 	    } else {
  16. 	        echo"user does not exists";
  17. 	    }
  18. 	}
  19. 	else
  20. 	{
  21. 		echo"username is not alphanumeric";
  22. 	}
  23. }
  24. else
  25. {
  26. 	echo "Please try again";
  27. }
  28.  
  29. $usernam = isset($usernam) ? $usernam : '-No Username-';
  30. ?>
  31.  
  32. <center><h2><?php echo $usernam;?></h2></center>
Success #stdin #stdout #stderr 0.01s 52488KB
comments (?)
stdin 
Standard input is empty
stdout 
Please try again
<center><h2>-No Username-</h2></center>
stderr 
PHP Warning:  include(connect.php): failed to open stream: No such file or directory in /home/JlBIS9/prog.php on line 3
PHP Warning:  include(): Failed opening 'connect.php' for inclusion (include_path='.:/usr/share/php:/usr/share/pear') in /home/JlBIS9/prog.php on line 3
https://ideone.com/TKf1lP
http://stackoverflow.com/questions/41581727/php-echo-username-after-login
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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