Error :: array Please help!!!

seaminem

Is there anything wrong with this... The program only shows array of first student courses (array 0). The other students (array 1 to 10) courses doesn't show on the

$Student = array("Sea" => array("ID"=>"4580001", "Division"=>"Music", "Major"=>"Saxophone", "Courses"=>array("course1"=>array("id"=>"A001","grade"=>4), "course2"=>array("id"=>"A002","grade"=>2.5) ,"course3"=>array("id"=>"A003","grade"=>3), "course4"=>array("id"=>"P001","grade"=>3)) ) ,

 "Scott" => array("ID"=>"4580002", "Division"=>"Music", "Major"=>"Saxophone", "CourseID" =>array("course1"=>array("id"=>"A001","grade"=>3.5),"course2"=>array("id"=>"A002","grade"=>2),"course3"=>array("id"=>"A003","grade"=>3),"course4"=>array("id"=>"A004","grade"=>2)) ),

"Kenny" => array ("ID"=> "4580003", "Division"=>"Music", "Major"=>"Saxophone", "CourseID" =>array("course1"=>array("id"=>"A002","grade"=>4),"course2"=>array("id"=>"A003","grade"=>4),"course3"=>array("id"=>"A004","grade"=>4),"course4"=>array("id"=>"P002","grade"=>4)) )
);

$Course = array("A001" => array ("CourseName" => "Introduction to Music", "Credit" => "4"),
	"A002" => array ("CourseName" => "Introduction to Classical Music", "Credit" => "4") );

while (list($IDkey,$IDvalue) = each ($Student) ) // each student
		{
				$ArrayCounter=0;
				$totalcredit=0;

			$temp = array(); // temp storage for calculating grade

			print "<b>Name: </b>" .$IDkey ."<b> ID: </b>" .$IDvalue["ID"] ."<b><br>Division: </b>" .$IDvalue["Division"] ."<b>  Major: </b>" .$IDvalue["Major"] ."<br>"; // student info
			print "<b><br>Courses: </b><br>";	

				while (list($IDkey2,$IDvalue2) = each ($IDvalue["Courses"]) ) //each courses
				{

			".$IDvalue2["grade"]."<br>"; //



foreach ($Course as $IDkey3 => $IDvalue3) //shows current value of $Course

{



if($IDkey3 == $IDvalue2["id"]) // match course id  with the course name

{				
	print $IDvalue3["CourseName"] . " Credit: " . $IDvalue3["Credit"] . " Grade: ". $IDvalue2["grade"] . "<br>";

$totalcredit = $totalcredit + $IDvalue3["Credit"];

$temp[$ArrayCounter] = $IDvalue2["grade"] * $IDvalue3["Credit"];
}

}

$ArrayCounter++;
}

$sum=0;

for ($i=0;$i<count($temp);$i++)
$sum = $sum+$temp[$i]; // sum up the credit*grade
$gpa = $sum/$totalcredit; //GPA calculation

print "<br>";
print "<b>Total Credit Taken = </b>".$totalcredit." <b>GPA = </b>".$gpa;


print "<BR><HR><BR>";
}

This is the warning messages that appears on the place where it supposes to display all the course lists that a student is taken.

Thank you

justsomeone

Your post and your code are both a little tricky to read, but I'll try to answer.

It looks as if both of your while loops start out correctly.

I don't know what you are trying to do with this line:

 ".$IDvalue2["grade"]."<br>"; //

But it looks like invalid syntax to me. Even if it's valid, it doesn't actually do anything. It doesn't print/echo the value, it doesn't append it to a variable, it doesn't do anything...

What error did you say you're getting?

Also could you show the output you expect, and the output you are actually getting?

Installer

For anyone trying to decipher Sea's array structures, this may help:

$Student = array("Sea"   => array("ID"       => "4580001", 
                                  "Division" => "Music", 
                                  "Major"    => "Saxophone", 
                                  "Courses"  => array("course1" => array("id" => "A001", "grade" => 4), 
                                                      "course2" => array("id" => "A002", "grade" => 2.5),
                                                      "course3" => array("id" => "A003", "grade" => 3), 
                                                      "course4" => array("id" => "P001", "grade" => 3))), 

             "Scott" => array("ID"       => "4580002", 
                              "Division" => "Music", 
                              "Major"    => "Saxophone", 
                              "CourseID" => array("course1" => array("id" => "A001", "grade" => 3.5),
                                                  "course2" => array("id" => "A002", "grade" => 2),
                                                  "course3" => array("id" => "A003", "grade" => 3),
                                                  "course4" => array("id" => "A004", "grade" => 2))), 

             "Kenny" => array("ID"       => "4580003", 
                              "Division" => "Music", 
                              "Major"    => "Saxophone", 
                              "CourseID" => array("course1" => array("id" => "A002", "grade" => 4),
                                                  "course2" => array("id" => "A003", "grade" => 4),
                                                  "course3" => array("id" => "A004", "grade" => 4),
                                                  "course4" => array("id" => "P002", "grade" => 4)))); 

$Course = array("A001" => array ("CourseName" => "Introduction to Music",           "Credit" => "4"), 
                "A002" => array ("CourseName" => "Introduction to Classical Music", "Credit" => "4"));

This makes it easier, I think, to spot, e.g., the "Courses" and "CourseID" key discrepancy.

As justsomeone pointed out, the rest of the code won't even run.

Installer

And here's a reformat of the rest of the code

while (list($IDkey, $IDvalue) = each($Student)) { 
    $ArrayCounter = 0; 
    $totalcredit = 0; 
    $temp = array(); // temp storage for calculating grade 

print "<b>Name: </b>" . $IDkey . 
      "<b> ID: </b>" . $IDvalue['ID'] . 
      "<b><br>Division: </b>" . $IDvalue['Division'] . 
      "<b>  Major: </b>" . $IDvalue['Major'] . "<br>"; // student info 
print "<b><br>Courses: </b><br>";     

while (list($IDkey2, $IDvalue2) = each($IDvalue['Courses'])) { 
    ".$IDvalue2["grade"]."<br>";   // What the...
    foreach ($Course as $IDkey3 => $IDvalue3) { 
        if ($IDkey3 == $IDvalue2['id']) { // match course id  with the course name 
            print $IDvalue3['CourseName'] . 
                  " Credit: " . $IDvalue3['Credit'] . 
                  " Grade: ". $IDvalue2['grade'] . "<br>"; 
            $totalcredit = $totalcredit + $IDvalue3['Credit']; 
            $temp[$ArrayCounter] = $IDvalue2['grade'] * $IDvalue3['Credit']; 
        } 
    } 
    $ArrayCounter++; 
} 

$sum = 0; 
for ($i = 0; $i < count($temp); $i++) {
    $sum = $sum + $temp[$i]; // sum up the credit*grade 
}
$gpa = $sum / $totalcredit; //GPA calculation 

print "<br>"; 
print "<b>Total Credit Taken = </b>" . $totalcredit . " <b>GPA = </b>" . $gpa; 
print "<BR><HR><BR>"; 
}

Installer

So, after commenting out the mystery line and changing "CourseID" to "Courses", this output results:

Name: Sea ID: 4580001
Division: Music Major: Saxophone

Courses:
Introduction to Music Credit: 4 Grade: 4
Introduction to Classical Music Credit: 4 Grade: 2.5

Total Credit Taken = 8 GPA = 3.25

Name: Scott ID: 4580002
Division: Music Major: Saxophone

Courses:
Introduction to Music Credit: 4 Grade: 3.5
Introduction to Classical Music Credit: 4 Grade: 2

Total Credit Taken = 8 GPA = 2.75

Name: Kenny ID: 4580003
Division: Music Major: Saxophone

Courses:
Introduction to Classical Music Credit: 4 Grade: 4

Total Credit Taken = 4 GPA = 4

seaminem

thank you so much