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<?php function is_leap_year(int $year) { return $year % 4 == 0 and ($year % 100 != 0 or $year % 400 == 0); } $year = 2016; var_dump(is_leap_year($year) === date('L', $year)); # true $year = 2018; var_dump(is_leap_year($year) === date('L', $year)); # false
Output for 7.0.0 - 7.0.33, 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
bool(false) bool(false)
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 bool(false) bool(false)
Output for 5.6.0 - 5.6.40
Catchable fatal error: Argument 1 passed to is_leap_year() must be an instance of int, integer given, called in /in/k85sK on line 8 and defined in /in/k85sK on line 3
Process exited with code 255.
preferences:
188.57 ms | 401 KiB | 290 Q