What steps can be taken to troubleshoot issues with modifying the order of cities in the airport schedule using PHP?

To troubleshoot issues with modifying the order of cities in the airport schedule using PHP, you can start by checking the logic used to rearrange the cities in the schedule array. Make sure the array keys are being properly updated when reordering the cities. Additionally, verify that the sorting algorithm or function being used is correctly sorting the cities based on the desired criteria. 

// Sample code to modify the order of cities in the airport schedule
$airportSchedule = [
    'New York',
    'Los Angeles',
    'Chicago',
    'Miami'
];

// Function to reorder the cities based on a custom sorting logic
function customSort($a, $b) {
    $customOrder = ['Los Angeles', 'New York', 'Chicago', 'Miami'];
    return array_search($a, $customOrder) - array_search($b, $customOrder);
}

usort($airportSchedule, 'customSort');

// Output the reordered airport schedule
print_r($airportSchedule);

Keywords

PHP troubleshooting city order airport schedule modification

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