Array help

[kaveman50]

Can anyone help me with a multidimensional array? I've never done one before so I'm not sure what to do.

 

A university offers 10 courses at each of three campuses.  The number of students enrolled in each is presented in the table below.

  Find the total number of course enrollments on each campus.

Find the total number of students taking each course.

 

 

                              Item

                    1    2      3

-------------------------------

Store 1        54  23    56

-------------------------------

Store 2        43    54    23

Beginning Inventory

 

[kaveman50]

.

[mikesta707]

well each row is its own array. each cell is the course number. so the first store would look like

 

$store1['Course1'] = 54;
$store1['Course2'] = 23;
$store1['Course3'] = 56;

 

each of the stores (which are arrays) are stored in another array, so the array that holds everything is basically an array of arrays

$Stores = array($store1, $store2);

 

To access the first store, you would access the first element of the array, like so

$Stores[0];//this is store one

 

well, because its an array, you can treat it like one, if you wanted to, say, access the numer of students in the first course, you would do the following

$Stores[0][0];//54

 

Check out this tutorial for more information: HERE

 

 

[kaveman50]

I typed in the wrong chart on my first post.

 

heres the real one.

                        Courses

    1  2  3  4  5  6  7  8  9 10

1  5  15 22 21 12 25 16 11 17 23

2  11 23 51 25 32 35 32 52 25 21

3  2  12 32 32 25 26 29 12 15 11

 

 

Heres my code

<?
$Campus1['Course1'] = 5;
$Campus1['Course2'] = 15;
$Campus1['Course3'] = 22;
$Campus1['Course4'] = 21;
$Campus1['Course5'] = 12;
$Campus1['Course6'] = 25;
$Campus1['Course7'] = 16;
$Campus1['Course8'] = 11;
$Campus1['Course9'] = 17;
$Campus1['Course10'] = 23;

$Campus = array($Campus1, $Campus2, $Campus3);
$Campus[0];//this is store one



$Campus2['Course1'] = 11;
$Campus2['Course2'] = 23;
$Campus2['Course3'] = 51;
$Campus2['Course4'] = 25;
$Campus2['Course5'] = 32;
$Campus2['Course6'] = 35;
$Campus2['Course7'] = 32;
$Campus2['Course8'] = 52;
$Campus2['Course9'] = 25;
$Campus2['Course10'] = 21;


$Campus = array($Campus1, $Campus2, $Campus3);
$Campus[0];//this is store two




$Campus3['Course1'] = 2;
$Campus3['Course2'] = 12;
$Campus3['Course3'] = 32;
$Campus3['Course4'] = 32;
$Campus3['Course5'] = 25;
$Campus3['Course6'] = 26;
$Campus3['Course7'] = 29;
$Campus3['Course8'] = 12;
$Campus3['Course9'] = 15;
$Campus3['Course10'] = 11;


$Campus = array($Campus1, $Campus2, $Campus3);
$Campus[0];//this is store two







echo ($Campus[0]['Course1']);




$sum=0;
while ($campus1+$campus2+$campus3)
{










?>

[mikesta707]

<?
$Campus1['Course1'] = 5;
$Campus1['Course2'] = 15;
$Campus1['Course3'] = 22;
$Campus1['Course4'] = 21;
$Campus1['Course5'] = 12;
$Campus1['Course6'] = 25;
$Campus1['Course7'] = 16;
$Campus1['Course8'] = 11;
$Campus1['Course9'] = 17;
$Campus1['Course10'] = 23;

$Campus = array($Campus1, $Campus2, $Campus3);
$Campus[0];//this is campus one. 

//to access the first course, you do
$Campus[0]['Course1'] = 11;

//remember, since $Campus[0] is $Campus1, you can treat $Campus1['Course1'] and $Campus[0] the same

[kaveman50]

I'm still confused about how you combined all 3. Do you have to do a loop?

[mikesta707]

this is how you combine all three

$Campus = array($Campus1, $Campus2, $Campus3);

 

did you check out the tutorial?

[kaveman50]

Oh I didn't see the link. I'll go check it out.

[kaveman50]

It's only outputting 5 for some reason. This is my new code.

<?
$Campus1['Course1'] = 5;
$Campus1['Course2'] = 15;
$Campus1['Course3'] = 22;
$Campus1['Course4'] = 21;
$Campus1['Course5'] = 12;
$Campus1['Course6'] = 25;
$Campus1['Course7'] = 16;
$Campus1['Course8'] = 11;
$Campus1['Course9'] = 17;
$Campus1['Course10'] = 23;

$Campus = array($Campus1, $Campus2, $Campus3);
$Campus[0]; 


$Campus[0]['Course1'] = 11;






$Campus2['Course1'] = 11;
$Campus2['Course2'] = 23;
$Campus2['Course3'] = 51;
$Campus2['Course4'] = 25;
$Campus2['Course5'] = 32;
$Campus2['Course6'] = 35;
$Campus2['Course7'] = 32;
$Campus2['Course8'] = 52;
$Campus2['Course9'] = 25;
$Campus2['Course10'] = 21;


$Campus = array($Campus1, $Campus2, $Campus3);
$Campus[0];



$Campus[0]['Course1'] = 2;






$Campus3['Course1'] = 2;
$Campus3['Course2'] = 12;
$Campus3['Course3'] = 32;
$Campus3['Course4'] = 32;
$Campus3['Course5'] = 25;
$Campus3['Course6'] = 26;
$Campus3['Course7'] = 29;
$Campus3['Course8'] = 12;
$Campus3['Course9'] = 15;
$Campus3['Course10'] = 11;


$Campus = array($Campus1, $Campus2, $Campus3);
$Campus[0];







echo ($Campus[0]['Course1']);
















?>

 

[kaveman50]

I'm having a hard time relating the tutorial with the program itself.  Does anyone know what's wrong?

[kaveman50]

or not necessarily what's wrong, but what to add

[kaveman50]

.

[kaveman50]

.

[kaveman50]

Mikesta or anyone else know what to do?

[mikesta707]

what is it supposed to say?