Question

Having created an array of values using a MySQL query, I need to check if they are all at least equal to a given value. This is for checking room availability in a hotel.

First I do the the MySQL query:

foreach( $datearray as $value ) {
$query_avail = "SELECT cupo, ex_cupo.room_id FROM ex_cupo JOIN ex_rooms ON ex_cupo.room_id=ex_rooms.room_id  AND ex_rooms.room_id = '$room_id' AND dt = '$value'";
$avail = mysql_query($query_avail, $MySQL_extranet) or die(mysql_error());
$row_avail = mysql_fetch_assoc($avail);
   $availresult[] = $row_avail['cupo'];
}

“Cupo” is the number of rooms available for a given date, so $availresult will be an array of the number of rooms available across a range of dates.

Now if someone wants to book (say) 2 rooms for those dates, I need to ensure that each value in the array is at least 2. For example, if there are 5 dates in the range and they are 2, 2, 1, 2, 2, I need to return false, but if they are 2, 2, 2, 2, 2 or 2, 2, 3, 2, 2, I need to return true.

How do I do that? (I hope I explained it well enough.)

Obviously the choice of 2 is just an example. It will normally be a variable called $numrooms.

Answer 1

$testArray = array(2,2,2,2,1,2);

$valid = array_reduce(
    $testArray,
    function ($match, $value) {
        return $match && ($value >= 2);
    },
    TRUE
);
var_dump($valid);

How to pass $numrooms through:

$testArray = array(2,2,2,2,1,2);
$numrooms = 2;

$valid = array_reduce(
    $testArray,
    function ($match, $value) use ($numrooms) {
        return $match && ($value >= $numrooms);
    },
    TRUE
);
var_dump($valid);