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<?php $d = new \DateTime('monday'); var_dump($d); $d->modify('next sunday'); var_dump($d);
Output for 7.0.0 - 7.0.31, 7.1.0 - 7.1.21, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
object(DateTime)#1 (3) { ["date"]=> string(26) "2017-07-17 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" } object(DateTime)#1 (3) { ["date"]=> string(26) "2017-07-23 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 7.3.32 - 7.3.33, 8.0.13
object(DateTime)#1 (3) { ["date"]=> string(26) "2017-07-17 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } object(DateTime)#1 (3) { ["date"]=> string(26) "2017-07-23 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }

preferences:
144.04 ms | 402 KiB | 205 Q