3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo round(memory_get_usage()/1024);
Output for 7.3.0 - 7.3.13, 7.4.0 - 7.4.1
377
Output for 7.2.0 - 7.2.26
373
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
337
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
211
Output for 5.3.0 - 5.3.29
603

preferences:
211.91 ms | 401 KiB | 272 Q