<?php

function calculatecircle($r) {

$counter = 0;


for ($x = -$r; $x <= $r; $x++) {

 	for ($y = -$r; $y <= $r; $y++){




		if (abs(sqrt($x*$x)+ sqrt($y*$y) - sqrt($r*$r)) < 1/2){
			echo "Step " . $counter . " " . "(" . $x . "," . $y . ")" . "\n";
			$counter++;
		}

	}

}

return true;

}

print_r(calculatecircle(5));

?>