3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo 9999999999999999999999999999*28937649827340876987698769870987098709876755647476598709870897-08909868767643659876098708768754765476598798098098080980809809890978098098098987280937/0.0000000000000000000000000000000000000000000000002;
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, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
2.8937649827341E+89
preferences:
216.98 ms | 1397 KiB | 163 Q