3v4l.org

run code in 300+ PHP versions simultaneously
gd3500975182w <?php $yr="2014"; $week="01"; $day="02"; $day=date("D",strtotime($day)); $newdate= date("d-m-Y", strtotime($yr."W".$week));; echo $newdate; $k = explode("-", $newdate); $ymd = $k[2]."-".$k[0]."-".$k[1]; echo $ymd ?>
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 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 - 8.3.4, 8.3.6
gd3500975182w 30-12-20132013-30-12
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 gd3500975182w 30-12-20132013-30-12
Output for 5.0.0 - 5.0.5
gd3500975182w 23-12-20132013-23-12
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
gd3500975182w 01-01-19701970-01-01
preferences:
323.9 ms | 401 KiB | 383 Q