Group arrays by key value - php

Question

I have a problem approaching an issue i have, i need to group arrays by key value
I have 3 foreach functions
foreach ($report_phonecall as $key=>$value) {
$phonecalls[$value['datum']] = $value['broj'];
};
foreach ($report_meeting as $key=>$value) {
$meetings[$value['datum']] = $value['broj'];
}
foreach ($report_notes as $key=>$value) {
$notes[$value['datum']] = $value['broj'];
}
That give me array
$phonecall = Array ( [2016-07-13] => 2 [2016-07-14] => 1 [2016-07-19] =>1 )
$meetings = Array ( [2016-07-13] => 1 [2016-07-14] => 1 )
$notes = Array ( [2016-07-19] => 1 )
I need to merge them into 1 array foreach date like this
Array(2016-07-13 => array([phonecalls]=>2, [meetings]=>1, [notes]=>0)) 2016-07-14 => array([phonecalls]=>1, [meetings]=> 1, [notes]=>0).... etc
I want to group/sort them by key value.
Going by
$group_reports[$value[key]] = $value['broj'][$phonecalls][$meetings][$notes]
Im not sure how to define it

Answer 1

How about like this?
$phonecall = ['2016-07-13' => 2, '2016-07-14' => 1, '2016-07-19' => 1];
$meetings = ['2016-07-13' => 1, '2016-07-14' => 1];
$notes = ['2016-07-19' => 1];
// Get *all* possible dates
$keys = array_unique(array_keys($phonecall+$meetings+$notes));
foreach($keys as $key) {
$final[$key] = [
'phonecalls' => isset($phonecall[$key]) ? $phonecall[$key] : 0,
'meetings' => isset($meetings[$key]) ? $meetings[$key] : 0,
'notes' => isset($notes[$key]) ? $notes[$key] : 0
];
}

Answer 2

Please use below code for merge array
$finalArr = array();
foreach($phonecall as $key=>$val){
$finalArr[$key]['phonecalls'] = $val;
$finalArr[$key]['meetings'] = 0;
$finalArr[$key]['notes'] = 0;
}
foreach($meetings as $key=>$val){
if(array_key_exists($key, $finalArr)){
$finalArr[$key]['meetings'] = $val;
} else {
$finalArr[$key]['phonecalls'] = 0;
$finalArr[$key]['meetings'] = $val;
$finalArr[$key]['notes'] = 0;
}
}
foreach($notes as $key=>$val){
if(array_key_exists($key, $finalArr)){
$finalArr[$key]['notes'] = $val;
} else {
$finalArr[$key]['phonecalls'] = 0;
$finalArr[$key]['meetings'] = 0;
$finalArr[$key]['notes'] = $val;
}
}