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<?php /* This is the result i want from $uptime, all periods where there are no incidents between period_start and period_end. -------------------------------------------------- Array ( [0] => Array ( [start] => 2016-01-01 00:00:00 [end] => 2016-01-05 00:00:00 ) [1] => Array ( [start] => 2016-01-15 22:00:00 [end] => 2016-01-20 00:00:00 ) [2] => Array ( [start] => 2016-01-25 23:59:59 [end] => 2016-01-31 23:59:59 ) ) -------------------------------------------------- */ $period_start = '2016-01-01 00:00:00'; $period_end = '2016-01-31 23:59:59'; $uptime = []; $incidents = [ ['start' => '2016-01-05 00:00:00', 'end' => '2016-01-10 23:59:59'], ['start' => '2016-01-07 00:00:00', 'end' => '2016-01-15 22:00:00'], // overlapping ['start' => '2016-01-08 00:00:00', 'end' => '2016-01-12 23:59:59'], // overlapping ['start' => '2016-01-20 00:00:00', 'end' => '2016-01-25 23:59:59'], ['start' => '2016-01-23 00:00:00', 'end' => '2016-01-24 23:59:59'] // overlapping ]; // First period if(strtotime($period_start) <= strtotime($incidents[0]['start'])) { array_push($uptime, ['start' => $period_start, 'end' => $incidents[0]['start']]); } $last_end = 0; // Used for finding the last ending incident. for($i = 0;$i < sizeof($incidents);$i++) { $push = true; $last_end_j = $incidents[$i]['end']; for($j = $i+1;$j < sizeof($incidents);$j++) { if(strtotime($incidents[$j]['end']) > strtotime($last_end_j)) { $last_end_j = $incidents[$j]['end']; } if(strtotime($incidents[$i]['end']) < strtotime($incidents[$j]['start'])) { if($push) { array_push($uptime, ['start' => $last_end_j, 'end' => $incidents[$j]['start']]); } break; } else { $push = false; } } // Saving for last period if(strtotime($incidents[$i]['end']) > strtotime($last_end)) { $last_end = $incidents[$i]['end']; } } // Last period if(strtotime($period_end) >= strtotime($last_end)) { array_push($uptime, ['start' => $last_end, 'end' => $period_end]); } print_r( $uptime );
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [start] => 2016-01-01 00:00:00 [end] => 2016-01-05 00:00:00 ) [1] => Array ( [start] => 2016-01-25 23:59:59 [end] => 2016-01-20 00:00:00 ) [2] => Array ( [start] => 2016-01-25 23:59:59 [end] => 2016-01-31 23:59:59 ) )

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