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run code in 300+ PHP versions simultaneously
<?php // suppose this is your mysql data, each inner pair is a 'to', 'from' $rows = array( array(1,6), array(7,10), array(8,12) ); list($a, $b) = current($rows); $downtime = $b - $a; while( list($c, $d) = next($rows) ) { $downtime += $d - $c - max(0, min($d,$b)-$c); if( $c >= $b ) $a = $c; $b = max($b,$d); } echo "total down time is " , $downtime; ?>
Output for 8.5.0 - 8.5.3
Warning: Cannot use bool as array in /in/Q2phs on line 13 Warning: Cannot use bool as array in /in/Q2phs on line 13 total down time is 10
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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
total down time is 10
preferences:
115.46 ms | 2298 KiB | 4 Q