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<?php /** * @param int $date Unix time * @return bool */ function isActive($date) { $days = [1 => 0b1000000, 0b0100000, 0b0010000, 0b0001000, 0b0000100, 0b0000010, 0b0000001, ]; $week = 0b1001110; $day = $days[date('N', $date)]; return ($week & $day) === $day; } function test($date) { printf("%s is %s\n", date('r', $date), isActive($date) ? 'TRUE' : 'FALSE'); } test(strtotime('monday')); test(strtotime('tuesday')); test(strtotime('wednesday')); test(strtotime('thursday')); test(strtotime('friday')); test(strtotime('saturday')); test(strtotime('sunday'));
Output for 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.4 - 7.4.5, 7.4.7 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
Mon, 21 Jan 2019 00:00:00 +0100 is TRUE Tue, 22 Jan 2019 00:00:00 +0100 is FALSE Wed, 23 Jan 2019 00:00:00 +0100 is FALSE Thu, 24 Jan 2019 00:00:00 +0100 is TRUE Fri, 25 Jan 2019 00:00:00 +0100 is TRUE Sat, 19 Jan 2019 00:00:00 +0100 is TRUE Sun, 20 Jan 2019 00:00:00 +0100 is 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 Mon, 21 Jan 2019 00:00:00 +0100 is TRUE Tue, 22 Jan 2019 00:00:00 +0100 is FALSE Wed, 23 Jan 2019 00:00:00 +0100 is FALSE Thu, 24 Jan 2019 00:00:00 +0100 is TRUE Fri, 25 Jan 2019 00:00:00 +0100 is TRUE Sat, 19 Jan 2019 00:00:00 +0100 is TRUE Sun, 20 Jan 2019 00:00:00 +0100 is FALSE
Output for 7.3.32 - 7.3.33, 8.0.13
Mon, 21 Jan 2019 00:00:00 +0000 is TRUE Tue, 22 Jan 2019 00:00:00 +0000 is FALSE Wed, 23 Jan 2019 00:00:00 +0000 is FALSE Thu, 24 Jan 2019 00:00:00 +0000 is TRUE Fri, 25 Jan 2019 00:00:00 +0000 is TRUE Sat, 19 Jan 2019 00:00:00 +0000 is TRUE Sun, 20 Jan 2019 00:00:00 +0000 is FALSE
Output for 7.4.6
Mon, 25 May 2020 00:00:00 +0200 is TRUE Tue, 26 May 2020 00:00:00 +0200 is FALSE Wed, 20 May 2020 00:00:00 +0200 is FALSE Thu, 21 May 2020 00:00:00 +0200 is TRUE Fri, 22 May 2020 00:00:00 +0200 is TRUE Sat, 23 May 2020 00:00:00 +0200 is TRUE Sun, 24 May 2020 00:00:00 +0200 is FALSE
Output for 7.4.0
Mon, 02 Dec 2019 00:00:00 +0100 is TRUE Tue, 03 Dec 2019 00:00:00 +0100 is FALSE Wed, 04 Dec 2019 00:00:00 +0100 is FALSE Thu, 05 Dec 2019 00:00:00 +0100 is TRUE Fri, 06 Dec 2019 00:00:00 +0100 is TRUE Sat, 07 Dec 2019 00:00:00 +0100 is TRUE Sun, 01 Dec 2019 00:00:00 +0100 is FALSE
preferences:
119.98 ms | 402 KiB | 155 Q