If Key Value pair exists in multidimensional array.. How to? - php

Question

I have a codeigniter shopping cart going and its "cart" array is the following:
Array (
[a87ff679a2f3e71d9181a67b7542122c] => Array
(
[rowid] => a87ff679a2f3e71d9181a67b7542122c
[id] => 4
[qty] => 1
[price] => 12.95
[name] => Maroon Choir Stole
[image] => 2353463627maroon_3.jpg
[custprod] => 0
[subtotal] => 12.95
)
[8f14e45fceea167a5a36dedd4bea2543] => Array
(
[rowid] => 8f14e45fceea167a5a36dedd4bea2543
[id] => 7
[qty] => 1
[price] => 12.95
[name] => Shiny Red Choir Stole
[image] => 2899638984red_vstole_1.jpg
[custprod] => 0
[subtotal] => 12.95
)
[eccbc87e4b5ce2fe28308fd9f2a7baf3] => Array
(
[rowid] => eccbc87e4b5ce2fe28308fd9f2a7baf3
[id] => 3
[qty] => 1
[price] => 14.95
[name] => Royal Blue Choir Stole
[image] => 1270984005royal_vstole.jpg
[custprod] => 1
[subtotal] => 14.95
)
)
My goal is to loop through this multidimensional array some how and if ANY product with the key value pair "custprod == 1" exists, then my checkout page will display one thing, and if no custom products are in the cart it displays another thing. Any help is appreciated. Thanks.

Answer 1

Rather than looping over it, you can check for the custprod key using array_key_exists. Or simply check to see if arr['custprod'] isset (both functions handle null differently).
$key = "custprod";
$arr = Array(
"custprod" => 1,
"someprop" => 23
);
if (array_key_exists($key, $arr) && 1 == $arr[$key]) {
// 'custprod' exists and is 1
}

Answer 2

function item_exists($cart, $custprod) {
foreach($cart as $item) {
if(array_key_exists("custprod", $item) && $item["custprod"] == $custprod) {
return true;
}
}
return false;
}
Now, you can use this function to check if product exist in stack:
if(item_exists($cart, 1)) {
// true
} else {
// false
}

Answer 3

You still need to loop the array to check it:
$cust_prod_found = false;
foreach($this->cart->contents() as $item){
if (array_key_exists("custprod", $item) && 1 == $item["custprod"]) {
$cust_prod_found = true; break;
}
}
if ($cust_prod_found) {
// display one thing
} else {
// display another thing
}