PHP - Associative Arrays

Probably easiest to explain what I am trying to do, to illustrate the impasse I have came to. I have online store With a number of products. Visitors can click on products, clicking brings details of the product came up in a frame on the right (with a field to enter the quantity), which can than be added to the shopping cart in a separate frame below it bottom right (passed using a different script (the one which I am having issues with)). So each time a product is added to the cart, three dynamic fields are passed via post script, which are named "product_name", "unit_quantity" and "unit_price" (these are all hidden fields called from a sql database based on what product the user clicked on).

So for the shopping cart, I want to incorporate an associative array using the three dynamic fields described above("product_name", "unit_quantity" and "unit_price") within a session so that a number of products can be added (hence using an array rather than a variable).

So shopping cart i have done so far reads:

<?php
session_start();

if (!isset ($product_name) && !empty($product_name))
{

if (!session_is_registered("product_info"))
{
$pos=0;
session_register("pos");
$product_info[$pos]= array ( 'product_name'=>$product_name, 'unit_quantity'=>$unit_quantity,
'product_quantity'=>$unit_quantity * $unit_price);
session_register("product_info");
}


?>

Not sure (as I am new to sessions, how to call the array to the screen). I have read through past threads but have not been able to found anything similar to what I am trying to achieve).

"Cannot find search daemon". I tried.

I've been wracking my brain for the last two hours trying to simplify this. It seems like I'm running over the two arrays far too many times, and that I should be able to do it in one pass somehow.

I have two associative arrays, the first contains a set of older options (previous version), the second is a default set of new options. I want to compare the two arrays, and strip out any old options that aren't in the new set. I want to add options from the new set that aren't already in the old, and I don't want to overwrite and of the old options that already have values.

Here's a copy of the sandbox I've been working it out in; it works, but it does four separate operations on the arrays to achieve the result: http://pastebin.com/erbFujkG

Hey all,

I'm well aware of associative arrays (key/value pairs) and how you can index them in an array like this:

$character = array (name=>"John",
                    occupation=>"Programmer",
                    age=>22,
                    "Learned language "=>"PHP"
);

Then it makes sense to iterate through the key/value pairs of the array using foreach:

foreach ( $character as $key=>$val ){
    print "$key = $val<br>";
}

However, I was watching a video tutorial where he created a $_SESSION array and then created an array associative array: 

$_SESSION['cart'] = array();
[/PHP]
Then he added a function add_to_cart:

function add_to_cart($id){
if(isset($_SESSION['cart'][$id])){
$_SESSION['cart'][$id]++;
return true;
}
else {
$_SESSION['cart'][$id] = 1;
return true;
}
return false;
}

Now that $id variable holds an id converted to integer from the dataabse. So if first item is clicked, id holds a value of integer 1.
When I see this:

$_SESSION['cart'][$id]

I see an array that holds two indexes, each index containing an associative array: [[array() => ''], [1 => '']].
So at index 0 of $_SESSION is [array() => ''].
But then he uses the foreach iterator like this:

function total_items($cart){
$items = 0;
if(is_array($cart)){
foreach($cart as $id => $qty){
$items += $qty; d
}
}
return $items;
}

Now I'm very confused. As you can see in that foreach method, it says that $id (and its corresponding value) is an associative array of $cart array, not $_SESSION array. I don't see how that happened. I thought $cart and id$ were distinct indexes of $_SESSION. I don't see how $id is a key of the $cart array.

Thanks for any explanation to clear my confusion.

Hi guys.

I have an associative array called $VisitorCountryID

$VisitorCountryID = filter_countries(array('Country' => $_SESSION['UserCountryName'])); 

and the function filter_countries() returns all the information relating to the visitors country from the database.

To find out what we have in the array, we do:

print_r($VisitorCountryID); 

and it gives us:

Array ( [14] => Array ( [CountryId] => 14 [Country] => Australia [FIPS104] => AS [ISO2] => AU [ISO3] => AUS [ISON] => 36 [Internet] => AU [Capital] => Canberra [Comment] => ISO includes Ashmore and Cartier Islands,Coral Sea Islands [sortOrder] => 1 ) ) 

Which is OK. Now i just want the CountryId which you can see in the array is 14 therefore I write:

 print_r($VisitorCountryID['CountryId']);

Which should give me 14 but it return blank no output.

I am surprised. What do you think is missing here.

Any response / feedback always welcomed!

Cheers!

I WANT HELP WITH ASSOCIATIVE ARRAY THERE IS ARRAY LIKE THIS

$ARRAY= array(

'dd'=>1,
'dde'=>233,
'qww'=2231
)
i want to store this array in database which data type i should i use want to use mixed data mixed string-numeric type which data type is suitable and i want to print  indexes only but values only what should i do