3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(sqrt("-2")); var_dump(sqrt("string"));
Output for 7.0.0 - 7.1.0
float(NAN) Warning: sqrt() expects parameter 1 to be float, string given in /in/97ANK on line 5 NULL
Output for 5.3.0 - 5.6.21, hhvm-3.10.0 - 3.12.0
float(NAN) Warning: sqrt() expects parameter 1 to be double, string given in /in/97ANK on line 5 NULL
Output for 4.3.4 - 5.2.17
float(NAN) float(0)
Output for 4.3.3

Process exited with code 137.
Output for 4.3.0 - 4.3.2
float(0.E+79) float(0)