3v4l.org

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<?php $x = 5.08; $y = $x - floor($x); $minutes = $x - $y; $seconds = round($y * 60, 0); echo sprintf("%02d:%02d", $minutes, $seconds);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
05:05
preferences:
200.07 ms | 404 KiB | 227 Q