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 git.master, git.master_jit, rfc.property-hooks
Fatal error: Cannot use $this as parameter in /in/BbHaL on line 2
Process exited with code 255.

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