Php array merge 2d array with same values

Question

The output I am getting mentions the same date multiple times and I need to merge this.

Output I have:

[{"checkFullAuth":true},{"2019-11-14":0,"avail_slots":0,"dates":"2019-11-14"},{"2019-11-15":1,"avail_slots":6,"dates":"2019-11-15"},{"checkFullAuth":true},{"2019-11-14":1,"avail_slots":14,"dates":"2019-11-14"},{"2019-11-15":1,"avail_slots":7,"dates":"2019-11-15"},{"checkFullAuth":true},{"2019-11-14":1,"avail_slots":17,"dates":"2019-11-14"},{"2019-11-15":1,"avail_slots":11,"dates":"2019-11-15"}]

Output I need:

[{"checkFullAuth":true},{"2019-11-14":1,"avail_slots":0,"dates":"2019-11-14"},{"2019-11-15":1,"avail_slots":6,"dates":"2019-11-15"}]

PS: The value of a date can change 0/1, the 1 will be leading here. So if there is a date mentioned twice with both values 1 and 0, the merged result should be 1.

How can I get the output I need?

This is the function I tried to get the output I need but it doesn't work as expected, it returns the values multiple times:

public function filterDates($dates_array){
    $dates_merged_array = array();
    $n=0;
    foreach($dates_array as $date_row1){
        $n++;
        $date1 = $date_row1['dates'];
        foreach($dates_array as $date_row2){
            if($date_row2['dates'] == $date1){
                if($date_row1[$date1] == 1 || $date_row2[$date1] == 1){
                    $dates_merged_array[] = array($date1=>1,"avail_slots"=>max($date_row1['avail_slots'],$date_row2['avail_slots']),"dates"=>$date1);
                }
                else if($date_row1[$date1] == "skip" || $date_row2[$date1] == "skip"){
                    $dates_merged_array[] = array($date1=>"skip","avail_slots"=>max($date_row1['avail_slots'],$date_row2['avail_slots']),"dates"=>$date1);
                }
                else{
                    $dates_merged_array[] = array($date1=>0,"avail_slots"=>max($date_row1['avail_slots'],$date_row2['avail_slots']),"dates"=>$date1);
                }
            }
        }
    }
    return $dates_merged_array;
}

Answer 1

Define a unique key in each array and match that key for the reference and then check on based of that key check to generate the array or not.