@ 2015-01-13T11:28:18Z <?php
function getOverlapDays($ranges)
{
$overlapDays = 0; // no overlap by default
$range = $ranges[0]; // starting with the first element of range array
$itemsCnt = count($ranges);
for ($id = 1; $id < $itemsCnt; $id++) {
$start1 = is_a($range["start"], "DateTime") ? $range["start"] : new DateTime($range["start"]);
$end1 = is_a($range["end"], "DateTime") ? $range["end"] : new DateTime($range["end"]);
$start2 = is_a($ranges[$id]["start"], "DateTime") ? $ranges[$id]["start"] : new DateTime($ranges[$id]["start"]);
$end2 = is_a($ranges[$id]["end"], "DateTime") ? $ranges[$id]["end"] : new DateTime($ranges[$id]["end"]);
if ($start1 <= $end2 && $end1 >= $start2) { // if the dates overlap
return min($end1, $end2)->diff(max($start2, $start1))->days + 1; // return how many days overlap
} else {
$range = [
"start" => $start1 > $start2 ? $start1 : $start2,
"end" => $end1 > $end2 ? $end1 : $end2
];
}
}
return $overlapDays;
}
// example
$ranges = array(
array('start' => '2013-12-31', 'end' => '2014-01-01'),
array('start' => '2014-01-01', 'end' => '2014-01-31')
);
echo getOverlapDays($ranges);
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Output for 5.4.0 - 5.4.45 , 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 - 8.3.4 , 8.3.6 1 Output for 8.3.5 Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
1 Output for 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 Parse error: syntax error, unexpected '[' in /in/Aifer on line 17
Process exited with code 255 . Output for 5.0.0 - 5.0.5 Parse error: parse error, unexpected '[' in /in/Aifer on line 17
Process exited with code 255 . Output for 4.4.2 - 4.4.9 Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/Aifer on line 15
Process exited with code 255 . Output for 4.3.0 - 4.3.1 , 4.3.5 - 4.3.11 , 4.4.0 - 4.4.1 Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/Aifer on line 15
Process exited with code 255 . Output for 4.3.2 - 4.3.4 Parse error: parse error in /in/Aifer on line 15
Process exited with code 255 . preferences:dark mode live preview
215.3 ms | 401 KiB | 340 Q