CODEWITHSUNDEEP
phparrays
Yulia
Yulia

Reputation: 151

sum numbers in array where key is integer, php

my code:

foreach($comment as $key => $value) {

$total = $value['likes'];

echo "$key: $total\n"

}

Outputs:

0: 3 1: 18 2: 72 3: 0 4: 10 5: 0 6: 0 7: 0 8: 0 9: 0 10: 0 11: 19 12: 0 13: 0 14: 14 15: 19 16: 0 17: 0 18: 1

How do I sum all the values? The array_sum function gives a "warning: expects parameter 1 to be array, integer given".

Upvotes: 1

Views: 2249

Answers (4)

jValdron
jValdron

Reputation: 3418

Array_sum is expecting a single dimension array. From the looks of your code you have a multi-dimensional array. Where $value is an array too.

You have the right idea with the total, but you have to add to your total like this $total = $total + $value['likes'], or the shorthanded version $total += $value['likes']:

$total = 0;

foreach($comment as $key => $value) {

    $total += $value['likes'];

    echo "$key: $total\n"

}

echo "My total is: $total";

Upvotes: 1

Nick Baluk
Nick Baluk

Reputation: 2275

$sum = 0;
foreach($comment as $key=>$value) {
   $sum+=$value;
}

echo "Total: $sum";

Upvotes: 1

simshaun
simshaun

Reputation: 21466

Keep a running total...

$total_likes = 0;

foreach($comment as $key => $value) {

    $total = $value['likes'];
    $total_likes += $total;

    echo "$key: $total\n"

}

echo "Total: $total_likes \n";

Upvotes: 0

jbnunn
jbnunn

Reputation: 6355

You need to start off with a variable and keep adding to it if you want to do it this way.

$total = 0;

foreach($comment as $key => $value) {

   $total += $value['likes'];

}

echo "The sum is: " . $total;

Upvotes: 1

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