Sindbad~EG File Manager

Current Path : /usr/home/beeson/public_html/helpwithmath_old/
Current File : /usr/home/beeson/public_html/helpwithmath_old/TestValidateNumber.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Testing, testing</title>
</head>

<body>
<?php
 
require_once('DB.php');
require_once('queryWebGrades.php');
$PassedEmail = $_POST['Email'];

 function validateNumber($Email, $flag)
// flag % 20 will be used to identify the ProductID idnentifying which CallHome MathXpert Assistant the user is trying to run.
// These ProductIDs are presently 1,2,3 for Calculus, Precalcus, Algebra; 4,5,6 for the Lab Editions of those three,  
// then 7,8,9 for the CallHome editions of Calculus, Precalculus, and Algebra, and 10 for the Grapher.
// if flag <= 20  then enrollment in WebGrades is sufficient to run; otherwise you must also have purchased the product from HelpWithMath.  
//   
// check if a user with this email is allowed to run MathXpert, and if they are enrolled in WebGrades. 
// The possible return values are:
// if enrolled in WebGrades and allowed to run:  a secret number, at least 17, given by (17 + 23*StudentNumber).
// if email is recognized and they are allowed to run, but not enrolled in WebGrades:  10
// if email is recognized but time limit has expired:  9
// if email is recognized,  $flag > 20 (indicating not a PREPAID version) and they are not enrolled in WebGrades:  8
// if email is not recognized:  0
 
{  if(strcasecmp($Email,"testing2011@gmail.com")==0)
       return 40;   // just for testing a valid response
   $sql = "SELECT * FROM `Students` WHERE Email='$Email';";  // = is case-insensitive in SQL  
   echo $sql; echo "<br>";
   $result = queryWebGrades($sql);
   if($result==NULL)
       { return 0; // should never happen, even if there's no data  
	   }
   $result->fetchInto($r);
   if($r == NULL)
       { return 0; // no student with that email is (or ever was) enrolled or purchased a CallHome version --unrecognized email
	   }
   $enrolled = false;
   $StudentNumber = $r[0];
   $SecretNumber = 17 + 23 * $StudentNumber;
   echo "StudentNumber = $StudentNumber and SecretNumber = $SecretNumber <br>";
   // now determine if the student is CURRENTLY enrolled in a WebGrades class	 
   $sql = "SELECT * FROM `Classes`  JOIN `Enrolled` ON Classes.ClassID=Enrolled.ClassID WHERE Enrolled.StudentNumber='$StudentNumber' AND CURDATE() <= Classes.EndDate;";
   echo $sql; echo "<br>";
   $result = queryWebGrades($sql);
   if($result == NULL)
      { $enrolled = false;
	    echo "oops<br>";
	  }
   else
     {  $result->fetchInto($r);
       if($r != NULL )
          { $enrolled = true;
		     echo "Enrolled<br>";
		  }
	   else
	     {  $enrolled = false;
		    echo "not enrolled <br>";
		  }
	 }
   if($flag <= 20 && $enrolled)   // a pre-paid version distributed with a WebGrades class, e.g. in the back of a textbook.   They will have to enroll for WebGrades
                               // before such a version  will run.
	    return $SecretNumber;    // user is enrolled in a real class currently
 
   // now check if user has purchased and their license has not expired
   $flag = $flag % 20;  // the ProductID 
   $sql = "SELECT * FROM `Expiration` WHERE StudentID='$StudentNumber' AND ProductID >= '$flag' AND CURDATE() <= Expiration.ExpirationDate;";
   echo $sql; echo "<br>";
   $result = queryWebGrades($sql);
   if($result != NULL &&  $result->fetchRow() != NULL)
       { if($enrolled) 
	         return $SecretNumber;
		 return 10;  // allowed to run, but not enrolled in WebGrades
	   }
   return 9;  // email recognized but time limit expired.
}  
 
echo "value of PassedEmail:$PassedEmail"; echo "x<br>";
echo $_POST['Email']; echo "<br>";
$answer = validateNumber($PassedEmail, 27);
echo "Returned $answer<br>";
?>
</body>
</html>
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