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<?php var_dump((new DateTime)->add(new DateInterval('P1Y'))->format('Y-m-d'));
Output for 5.6.28, 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 - 8.3.7
string(10) "2016-11-27"
Output for 7.0.6
string(10) "2017-05-03"
Output for 7.0.5
string(10) "2017-04-03"
Output for 7.0.4
string(10) "2017-03-10"
Output for 7.0.3
string(10) "2017-03-18"
Output for 7.0.2
string(10) "2017-03-23"
Output for 7.0.1
string(10) "2017-03-24"
Output for 7.0.0
string(10) "2017-03-27"
Output for 5.6.21
string(10) "2017-05-02"
Output for 5.6.20
string(10) "2017-04-10"
Output for 5.6.19
string(10) "2017-03-08"
Output for 5.6.18
string(10) "2017-03-15"
Output for 5.6.17
string(10) "2017-03-20"
Output for 5.6.16
string(10) "2017-03-28"
Output for 5.6.15
string(10) "2017-03-29"
Output for 5.6.14
string(10) "2017-04-02"
Output for 5.6.13
string(10) "2017-04-15"
Output for 5.6.12
string(10) "2017-04-20"
Output for 5.6.11
string(10) "2017-04-24"
Output for 5.6.10
string(10) "2017-04-25"
Output for 5.6.9
string(10) "2017-04-27"
Output for 5.6.8
string(10) "2017-04-30"
Output for 5.5.35
string(10) "2017-05-22"
Output for 5.5.34
string(10) "2017-04-11"
Output for 5.5.33
string(10) "2017-03-09"
Output for 5.5.32
string(10) "2017-03-17"
Output for 5.5.31
string(10) "2017-03-21"
Output for 5.5.30
string(10) "2017-04-01"
Output for 5.5.29
string(10) "2017-04-17"
Output for 5.5.28
string(10) "2017-04-21"
Output for 5.5.27
string(10) "2017-04-22"
Output for 5.5.26
string(10) "2017-04-26"
Output for 5.5.25
string(10) "2017-04-29"
Output for 5.5.24
string(10) "2017-05-24"

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180.57 ms | 401 KiB | 227 Q