3v4l.org

run code in 300+ PHP versions simultaneously
<?php function diff($this, $that){ $diff = abs((deg2rad($this)+M_PI_2)-(deg2rad($that)+M_PI_2)); $diff = min( M_PI_2 - $diff, $diff); echo rad2deg($diff) .PHP_EOL; } diff(-1,1);//2 diff(-90,90);//180 diff(-179,179);//2
Output for 7.1.0 - 7.1.25, 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/vM8fe on line 2
Process exited with code 255.
Output for 4.3.10 - 4.3.11, 4.4.0 - 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, 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
2 -90 -268
Output for 4.4.2, 5.1.2, 5.1.5
//22 -90 -268
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/vM8fe 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/vM8fe on line 6 2PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/vM8fe on line 6 -90PHP_EOL Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/vM8fe on line 6 -268PHP_EOL

preferences:
284.98 ms | 402 KiB | 327 Q