How can I get number of occurrences of an array element and save element with counter like python dictionary in PHP?

Question

$cartItemsArray = ["", "1", "2", "3", "3", "4", "2", "3"];

for ($i = 0; $i < count($cartItemsArray); $i++) {
   echo $cartItemsArray[$i] . "<br />";
}

Here $cartItemsArray is an array of some id's. I want to count the occurences of every element and save it in an array.

I want output like below:

Array = [1:"1", 2:"2", 3:"3", 4:"1"];

I want to save these array.

https://www.php.net/manual/en/function.array-count-values.php — CBroe, Jul 22 '20 at 12:33

score 2 · Accepted Answer · answered Jul 22 '20 at 12:31

2

You can use an array like this.

$cartItemsArray = ["", "1", "2", "3", "3", "4", "2", "3"];

$return = [];

foreach ($cartItemsArray as $card) {
    if (!isset($return[$card])) {
        $return[$card] = 0;
    }
    
    $return[$card]++;
}

answered Jul 22 '20 at 12:31

Saromase

467
5
10

but, i think the comment below your question is better than my answer – Saromase Jul 22 '20 at 12:36
OK... bro... that solution may be more efficient. <3 Thanks agains bro.... but your logic makes me think of the algo. – Backstreet Imrul Jul 22 '20 at 12:39
Bro.. One more question. When I try to find a value of an element how to do that in php?. – Backstreet Imrul Jul 22 '20 at 12:58

How can I get number of occurrences of an array element and save element with counter like python dictionary in PHP?

1 Answers1