3v4l.org

run code in 300+ PHP versions simultaneously
<?php function diff($this, $that){ $diff = $this-$that; while($diff < -180) $diff += 360; while($diff > 180) $diff -= 360; echo rad2deg($diff).PHP_EOL; } diff(359,1);//2 diff(-90,90); //180
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Cannot use $this as parameter in /in/4i2jZ on line 2
Process exited with code 255.
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.2 - 5.0.5, 5.1.1 - 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 - 5.6.28, 7.0.0 - 7.0.20
-114.59155902616 -10313.240312355
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/4i2jZ on line 11
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/4i2jZ on line 6 -114.59155902616PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/4i2jZ on line 6 -10313.240312355PHP_EOL
preferences:
222.92 ms | 402 KiB | 385 Q