Add up values in an array in an array - php

Question

I am trying to add up a specific variable (gq_numplayers) and display it. How can I do that if the arrays are in an array?
I am using GameQ (https://github.com/Austinb/GameQ/) if you don't understand what is going on.
EDIT:
var_dump ($results);
http://pastebin.com/BSeeWMEb
<?php
// Include the main class file
require '../GameQ.php';
// Define your servers,
// see list.php for all supported games and identifiers.
$servers = array(
array(
'id' => 'server 1',
'type' => 'css',
'host' => '216.52.148.30',
),
array(
'id' => 'server 2',
'type' => 'css',
'host' => '216.52.143.83',
),
array(
'id' => 'server 3',
'type' => 'teamspeak3',
'host' => 'voice.xenogamers.org:8730',
)
);
// Init the class, only need this once
$gq = new GameQ();
$gq->addServers($servers);
//optional settings
$gq->setOption('timeout', 3); // Seconds
$gq->setOption('debug', TRUE);
// You can optionally specify some output filters,
// these will be applied to the results obtained.
$gq->setFilter('normalise');
// Send requests, and parse the data
$results = $gq->requestData();
//make total
$total = array_sum(?!?!?!??!?!?);
echo $results['server 1']['gq_numplayers'];
?>

Answer 1

Just loop through the servers and add the number of players to a running total.
$num_players = 0;
foreach ($results as $server) {
$num_players += (int)$server['gq_numplayers'];
}

Answer 2

If you have $ArrayB inside $ArrayA, then you need a loop. Loop through $ArrayA with foreach like this:
foreach ($ArrayA as $item) {
}
Inside that loop, you need to add the code to operate on $item. So each time the loop iterates, $item will be the next item in the array! You can add them all up with a variable declared before entering the loop such as $counter.
But I am also noticing you indicated this:
echo $results['server 1']['gq_numplayers'];
That is NOT an array in an array. That is a single two-dimensional array. So my answer wouldn't even apply directly to it. You'd have to change the loop somewhat.

Answer 3

You could try adding it yourself via array_walk().
I'm not sure about the $results structure after the requestData() call but let's assume it looks like the sample array below:
<?php
$results= array(
array(
'something' => 'text',
'gq_numplayers' => 1,
),
array(
'something' => 'text',
'gq_numplayers' => 2,
),
array(
'something' => 'text',
'gq_numplayers' => 3,
),
);
$total=0;
array_walk($results,function($value,$key) use(&$total) {
$total+=(int)$value['gq_numplayers'];
});
print $total."\n";