3v4l.org

run code in 300+ PHP versions simultaneously
<?php for($i=0;$i<10;$i++){ sleep(0.25); echo "TEST".time(); }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 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 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.26, 7.3.0 - 7.3.7, 7.3.9 - 7.3.13, 7.4.0 - 7.4.1
TEST1427910247TEST1427910247TEST1427910247TEST1427910247TEST1427910247TEST1427910247TEST1427910247TEST1427910247TEST1427910247TEST1427910247
Output for 7.3.8
TEST1427910248TEST1427910248TEST1427910248TEST1427910248TEST1427910248TEST1427910248TEST1427910248TEST1427910248TEST1427910248TEST1427910248
preferences:
187.24 ms | 401 KiB | 325 Q