3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo strtotime( "next monday" ); echo strtotime( "previous monday" ); echo strtotime( "today" ); echo strtotime( "next friday" ); echo strtotime( "previous friday" );
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 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 - 8.3.4, 8.3.6
14905656001489359600148996440014903100001489705200
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 14905656001489359600148996440014903100001489705200
Output for 7.3.32 - 7.3.33, 8.0.13
14905728001489363200148996800014903136001489708800
preferences:
214.07 ms | 401 KiB | 242 Q