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Simple Register Function

/ Published in: PHP
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  1. function register( $user, $pass, $pass2 )
  2. {
  3. 	if ( isset( $_POST['register'] ) )
  4. 	{
  5.                 //Escape is a function with mysql_real_escape_string() and more
  6. 		$user = escape( $user );
  7. 		$pass = escape( $pass );
  8. 		$pass2 = escape( $pass2 );
  9.  
  10. 		if ( empty( $user ) )
  11. 		{
  12. 			$error = "Username missing!";
  13. 		}
  14. 		else if ( empty( $pass ) )
  15. 		{
  16. 			$error = "Password missing!";
  17. 		}
  18. 		else if ( empty( $pass2 ) )
  19. 		{
  20. 			$error = "Please repeat your password!";
  21. 		}
  22. 		else if ( $pass != $pass2 )
  23. 		{
  24. 			$error = "Your passwords do not match!";
  25. 		}
  26. 		else if ( strlen( $user ) > 25 )
  27. 		{
  28. 			$error = "Username is to long, 25 characters max!";
  29. 		}
  30. 		else if ( strlen( $pass ) > 25 )
  31. 		{
  32. 			$error = "Password is to long, 25 characters max!";
  33. 		}
  34. 		else if ( strlen( $pass ) < 5 )
  35. 		{
  36. 			$error = "Password is to short, 5 characters min!";
  37. 		}
  38.                 //I use trim to check if a user has a username with only whitespace, not using regex since having a whitespace in the username should be ok
  39. 		else if ( trim( $user ) == "" )
  40. 		{
  41. 			$error = "Usernames only containing white-spaces is not allowed!";
  42. 		}
  43. 		else
  44. 		{
  45. 			$fetch = mysql_query( "SELECT `user` FROM `user` WHERE `user` = '".$user."'" ) or die ( mysql_error() );
  46. 			if ( mysql_num_rows( $fetch ) != 0 )
  47. 			{
  48. 				$error = "That username is already taken!";
  49. 			}
  50. 			else
  51. 			{
  52. 				$pass = md5( $pass );
  53. 				mysql_query( "INSERT INTO `user` ( `user`, `pass` ) VALUES ( '".$user."', '".$pass."' )" ) or die ( mysql_error() );
  54. 			}
  55. 		}
  56. 	}
  57. }

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