3v4l.org

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<?php $iX0 = date_create('01-11-2019 08:00'); //Start interval X $iX1 = date_create('01-11-2019 14:00'); //End interval X $iY0 = date_create('01-11-2019 12:00'); //Start interval Y $iY1 = date_create('01-11-2019 17:00'); //End interval Y $i0 = MAX($iX0,$iY0); $i1 = Min($iX1,$iY1); if($i1 >= $i0){ $diff = $i0->diff($i1); echo $diff->h." Hours"; //full Hours } else { echo 'no itersect'; }
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 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
2 Hours

preferences:
117.88 ms | 407 KiB | 5 Q