How to remove subarray in multidimensional array if exsits the same values in other array-CodePudding

I have two multidimensional arrays:

Array A
(
    [0] => Array
        (
            [reservation_start] => 08:00:00
            [reservation_end] => 08:35:00
        )

    [1] => Array
        (
            [reservation_start] => 08:35:00
            [reservation_end] => 09:10:00
        )

    [2] => Array
        (
            [reservation_start] => 09:10:00
            [reservation_end] => 09:45:00
        )
)

Array B
(
    [0] => Array
        (
            [reservation_start] => 08:00:00
            [reservation_end] => 08:35:00
        )

    [1] => Array
        (
            [reservation_start] => 08:35:00
            [reservation_end] => 09:10:00
        )

)

foreach loop:

foreach ($allHours as $key => $value) {
    if (in_array($value, $busyHours)) {
        unset($allHours[$key]);
    }
}

And now I would like to remove from array A values exists in array. I used unset in foreach, but in each time arrays have different size so it does not work

CodePudding user response：

$array1 = [
    [ 'start' => '08:00:00', 'end' => '08:35:00' ],
    [ 'start' => '08:35:00', 'end' => '09:10:00' ],
    [ 'start' => '09:10:00', 'end' => '09:45:00' ]
];

$array2 = [
    [ 'start' => '08:00:00', 'end' => '08:35:00' ],
    [ 'start' => '08:35:00', 'end' => '09:10:00' ]
];

$result = [];

array_walk($array1, function ($value1, $index1) use (&$result, $array2) {
  array_walk($array2, function ($value2, $index2) use (&$result, $value1) {
    if ($value1['start'] === $value2['start'] && $value1['end'] === $value2['end']) {
      $result[] = $value1;
    }
  });
});

print_r($result);

Output:

Array
(
    [0] => Array
        (
            [start] => 08:00:00
            [end] => 08:35:00
        )

    [1] => Array
        (
            [start] => 08:35:00
            [end] => 09:10:00
        )

)

CodePudding user response：

assuming arrays A = allhours B = busyhours

stringfy both & reduce to 1-dimensional array


    foreach ($all as $k=>$arr) {
        $all_copy[$k] = $arr['reservation_start'] . $arr['reservation_end'];
    }

    foreach ($busy as $k=>$arr) {
        $busy_copy[$k] = $arr['reservation_start'] . $arr['reservation_end'];
    }

take array difference (if exist in busy, then remove it from all)

    // array_diff preserves keys.
    $non_busy = array_diff($all_copy, $busy_copy);

get resultant array from the original all

foreach ($non_busy as $k=>$no_need)
{
   $result[$k] = $all[$k];
}

you may unset arrays that you won't need anymore except $result