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<?php $startDate = new DateTime('2018-05-07'); $endDate = new DateTime('2019-07-04'); $dateInterval = new DateInterval('P1D'); $datePeriod = new DatePeriod($startDate, $dateInterval, $endDate); $fourteenths = []; foreach ($datePeriod as $dt) { if ($dt->format('d') == '14') { // Note this is losely checked! $fourteenths[] = $dt->format('Y-m-d'); } } echo count($fourteenths) . PHP_EOL; var_dump($fourteenths);
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 - 7.1.32, 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 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
14 array(14) { [0]=> string(10) "2018-05-14" [1]=> string(10) "2018-06-14" [2]=> string(10) "2018-07-14" [3]=> string(10) "2018-08-14" [4]=> string(10) "2018-09-14" [5]=> string(10) "2018-10-14" [6]=> string(10) "2018-11-14" [7]=> string(10) "2018-12-14" [8]=> string(10) "2019-01-14" [9]=> string(10) "2019-02-14" [10]=> string(10) "2019-03-14" [11]=> string(10) "2019-04-14" [12]=> string(10) "2019-05-14" [13]=> string(10) "2019-06-14" }
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 14 array(14) { [0]=> string(10) "2018-05-14" [1]=> string(10) "2018-06-14" [2]=> string(10) "2018-07-14" [3]=> string(10) "2018-08-14" [4]=> string(10) "2018-09-14" [5]=> string(10) "2018-10-14" [6]=> string(10) "2018-11-14" [7]=> string(10) "2018-12-14" [8]=> string(10) "2019-01-14" [9]=> string(10) "2019-02-14" [10]=> string(10) "2019-03-14" [11]=> string(10) "2019-04-14" [12]=> string(10) "2019-05-14" [13]=> string(10) "2019-06-14" }
Output for 4.4.2 - 4.4.9, 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/vPZZ0 on line 9
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/vPZZ0 on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/vPZZ0 on line 9
Process exited with code 255.

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