PHP converts a 12-hour system into a 24-hour system

This example describes the way PHP converts a 12-hour system to a 24-hour system. Share to everyone for your reference. as follows:

PHP converts the 12-hour system into a 24-hour system, and the input format is: 02:30:00 pm converted to: 14:30:00

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<?php function To_24_hour ($hours, $minutes, $seconds, $meridiem) {$hours = sprintf ('%02d ', (int) $hours); $minutes = sprintf ('%02d ', (int) $minutes); $seconds = sprintf ('%02d ', (int) $seconds); $meridiem = (Strtolower ($meridiem) = = ' am ')? ' Am ': ' PM '; Return date (' H:i:s ', Strtotime ("{$hours}:{$minutes}:{$seconds {$meridiem}")); } Echo To_24_hour (1, 2, 3, ' PM '); Returns 13:02:03 Echo to_24_hour (', ', ', ', ' pm '); Returns 14:30:00?>