3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i = 0; $i < 10; $i++) { var_dump(log10(log10($i % 10 + 1)) * 20 + 1); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
float(-INF) float(-9.427804553086496) float(-5.427424722610851) float(-3.4072046398068725) float(-2.110829224166885) float(-1.1787196071797474) float(-0.4618581105364137) float(0.11462054130675225) float(0.5931751906687723) float(1)
Output for 4.3.4 - 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, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
float(-INF) float(-9.4278045530865) float(-5.4274247226109) float(-3.4072046398069) float(-2.1108292241669) float(-1.1787196071797) float(-0.46185811053641) float(0.11462054130675) float(0.59317519066877) float(1)
Output for 4.3.3

Process exited with code 137.
Output for 4.3.0 - 4.3.2
float(-0.E+79) float(-9.4278045530865) float(-5.4274247226109) float(-3.4072046398069) float(-2.1108292241669) float(-1.1787196071797) float(-0.46185811053641) float(0.11462054130675) float(0.59317519066877) float(1)

preferences:
210.7 ms | 402 KiB | 316 Q