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@ 2022-05-31T07:25:04Z

<?php

$array = [
   0 => [
     "room_id" => "1",
     "date" => "01-07-2022",
     "available" => "A"
   ],
   1 => [
     "room_id" => "2",
     "date" => "01-07-2022",
     "available" => "A"
   ],
   2 => [
     "room_id" => "1",
     "date" => "02-07-2022",
     "available" => "A"
   ],
   3 => [
     "room_id" => "2",
     "date" => "02-07-2022",
     "available" => "U"
   ],
   4 => [
     "room_id" => "1",
     "date" => "03-07-2022",
     "available" => "U"
   ],
   5 => [
     "room_id" => "2",
     "date" => "03-07-2022",
     "available" => "U"
   ],
   6 => [
     "room_id" => "1",
     "date" => "04-07-2022",
     "available" => "U"
   ],
];

$hasVacancy = [];
$hasNoVacancy = [];
foreach ($array as $row) {
    if ($row['available'] === 'A') {
        $hasVacancy[$row['date']] = $row;
    } else {
        $hasNoVacancy[$row['date']] = $row;
    }
}
var_export(array_values($hasVacancy));

echo "\n---\n";

var_export(
    array_values(array_diff_key($hasNoVacancy, $hasVacancy))
);

Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: array ( 0 => array ( 'room_id' => '2', 'date' => '01-07-2022', 'available' => 'A', ), 1 => array ( 'room_id' => '1', 'date' => '02-07-2022', 'available' => 'A', ), ) --- array ( 0 => array ( 'room_id' => '2', 'date' => '03-07-2022', 'available' => 'U', ), 1 => array ( 'room_id' => '1', 'date' => '04-07-2022', 'available' => 'U', ), )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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