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<?php /** * @link https://stackoverflow.com/a/13129856/367456 */ $formats = array( 'today midnight', 'midnight', 'today', 'TODAY', 'MidNight', 'ToDaY', 'tomorrow', 'UTC today', 'today Z', 'today Europe/Berlin', 'Asia/Shanghai today', 'Asia/Shanghai', 'HKST today', ); /** * give each time (unix timestamp) its own color * * @param $time * @return string */ function time_color($time) { static $colors = array('black', 'copper', 'blue', 'lime', 'green', 'pink', 'red'); static $coloredTime = array(-1 => ' ?! '); if (!isset($coloredTime[$time])) { $coloredTime[$time] = array_pop($colors); } return $coloredTime[$time]; } $time = strtotime('UTC 2020-01-01 00:00:00'); $format1 = "(default time-zone is ..: %s)\n"; if (is_callable('date_default_timezone_get')) { printf($format1, date_default_timezone_get()); } else { printf($format1, '??? (unknown)'); } printf("UTC time is ............: [%-6s] %d (script-time, UTC 2020-01-01 00:00:00)\n", time_color($time), $time); foreach ($formats as $format) { $strToTime = strtotime($format, $time); printf("%'.-24s: [%-6s] %d\n", "$format ", time_color($strToTime), $strToTime); }

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