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<?php $array = [ '10-7', '11-3', '11-7', '12-3', '12-7', '13-3', '13-7', '14-3', '14-7', '15-7', ]; $hours = []; $days = []; foreach ($array as $item) { [0 => $hour, 1 => $day, 0 => $hours[$hour], 1 => $days[$day]] = sscanf($item, '%d-%d'); } var_export($hours); echo "\n--\n"; var_export($days);
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 - 8.3.27, 8.4.1 - 8.4.14
array ( 10 => 10, 11 => 11, 12 => 12, 13 => 13, 14 => 14, 15 => 15, ) -- array ( 7 => 7, 3 => 3, )

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