Online PHP editor | vld for TURGN

@ 2014-09-17T22:21:26Z

<?php
function diff($this, $that){
	$diff = $this-$that;
        while($diff < -180) $diff += 360;
        while($diff > 180) $diff -= 360;
	echo ($diff).PHP_EOL;
}

diff(359,1);//2
diff(1,359);
diff(-90,90);//180
diff(90,-
90);//180

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