Let's say I have the following array and I want to add up the sub-array values using PHP:
$summary = array(
"person1" => array(
question1 => '3',
question2 => '5'),
"person2" => array(
question1 => '2',
question2 => '3'),
"person3" => array(
question1 => '1',
question2 => '2')
);
How can I output the individual array sums for each person, rather than totaling all values from all sub-arrays? For instance:
$summary = array(
"person1" => array(
questions => '8'),
"person2" => array(
questions => '5'),
"person3" => array(
questions => '3')
);
I seem to be able to add it up to 16 using a foreach loop, but what I need is individual values so I can get the highest value and lowest value.
Thanks in advance!
$summaryTotals = Array();
foreach ($summary as $_summary => $_questions)
$summaryTotals[$_summary] = Array('questions'=>array_sum($_questions));
var_dump($summaryTotals);
Loop through all people, get the sum of the questions, and place them in the same key as they came from.
Output:
array(3) {
["person1"]=>
array(1) {
["questions"]=>
int(8)
}
["person2"]=>
array(1) {
["questions"]=>
int(5)
}
["person3"]=>
array(1) {
["questions"]=>
int(3)
}
}