How to get the array difference of multidimensional array in php?

Question

I have 2 two arrays

$schedule = [
    "Monday" => [0 => "12:00", 1 => "01:20"],
    "Tuesday" => [0 => "04:20",1 => "12:00"],
];

$bookedSlots = [
    ["Monday" => "01:20"],
    ["Tuesday" => "04:20" ] 
];

Now I want the answer or result to return an array of the remaining available slots in which the booked slots should be eliminated from the schedule. like the result given below.

$availableSlots = $schedule - $bookedSlots; // [ "Monday" => [ 0 => "12:00"], "Tuesday" =>[ 0 => "12:00" ];

Please, share some code that you have already tried.

Nazim
– Nazim

2020-06-18 18:16:22 +00:00
Commented Jun 18, 2020 at 18:16 — Nazim
– Nazim, Commented Jun 18, 2020 at 18:16

Vinayak Sarawagi · Accepted Answer · 2020-06-18 17:59:44Z

1

Okay. So here I wrote a helper function to generalize the solution. You can use the below-mentioned function.

function find_diff($schedule, $booked_slots)
{
  $diff = [];
  foreach ($schedule as $day =>  $times) {
    $day_wise_slots = isset($booked_slots[$day]) ? $booked_slots[$day] : [];
    if (!is_array($day_wise_slots)) $day_wise_slots = [$day_wise_slots];
    $diff[$day] = array_diff($times, $day_wise_slots);

  }

  return $diff;
}

Functions used: isset and array_diff.

Hope this helps!

edited Jun 18, 2020 at 17:59

answered Jun 18, 2020 at 15:54

Vinayak Sarawagi

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8 Comments

Ryuk Over a year ago

I tried but it is throwing this exception, ErrorException: Array to string conversion at $diff[$day] = array_diff($times, $day_wise_slots);

Vinayak Sarawagi Over a year ago

What are the arguments that you are passing?

Ryuk Over a year ago

I exactly copied your solution. and passed the above arrays mentioned in my question

Vinayak Sarawagi Over a year ago

The array that you passed in the question was in wrong format would throw an error even while passing, I have corrected the question. $schedule = [ "Monday" => [0 => "12:00", 1 => "01:20"], "Tuesday" => [0 => "04:20",1 => "12:00"], ]; $bookedSlots = [ ["Monday" => "01:20"], ["Tuesday" => "04:20" ] ];

Ryuk Over a year ago

I print_r both arrays and here you can see 1drv.ms/u/s!AqcCrPyKckd3tQwJF6uKUd3Ay-hI?e=sDd5gT

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