3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function diff($this, $that){ $diff = deg2rad($this)-deg2rad($that); while($diff < -M_PI) $diff += M_PI_2; while($diff > M_PI) $diff -= M_PI_2; echo rad2deg($diff) .PHP_EOL; } diff(-1,1);//2 diff(-90,90);//180 diff(-179,179);//2
based on aSM0R
Output for 7.1.0
Fatal error: Cannot use $this as parameter in /in/G6rlu on line 2
Process exited with code 255.
Output for 4.3.10 - 4.4.1, 4.4.3 - 4.4.9, 5.0.2 - 5.0.5, 5.1.1, 5.1.3 - 5.1.4, 5.1.6 - 7.0.14
-2 -180 -178
Output for 4.4.2, 5.1.2, 5.1.5
//2-2 -180 -178
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/G6rlu on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/G6rlu on line 7 -2PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/G6rlu on line 7 -180PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/G6rlu on line 7 -178PHP_EOL