3v4l.org

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<?php $start = "09:30"; $end = "11:15"; list($hour, $min) = explode(":",$start); $start = $hour + round($min/60,2); list($hour, $min) = explode(":",$end); $end = $hour + round($min/60,2); var_dump($start,$end); echo ($end-$start)*4;
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
float(9.5) float(11.25) 7

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101.47 ms | 1573 KiB | 3 Q