3v4l.org

run code in 300+ PHP versions simultaneously
<?php function myTest(){ static $x=0; echo "$x"; $x++; } myTest(); echo ""; myTest(); echo ""; myTest(); ?>
Output for 7.0.0 - 7.0.31, 7.1.0 - 7.1.21, 7.2.0 - 7.2.33, 7.3.16 - 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
012
preferences:
206.57 ms | 404 KiB | 205 Q