<?php
$workHours = [];

foreach (glob("sources/days/*.txt") as $filename) {
    if ($filename != 'employees.txt') {
        $date = basename($filename, ".txt");
        $lines = file($filename, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);

        foreach ($lines as $line) {
            list($employee, $startTime, $endTime, $breakDuration) = explode(',', $line);
            $workHours[] = [
                'employee' => $employee,
                'date' => $date,
                'startTime' => $startTime,
                'endTime' => $endTime,
                'breakDuration' => $breakDuration,
            ];
        }
    }
}

echo json_encode($workHours);
?>