Revise paste AvgBS

<?php
//The purpose of this script is to help me figure out if I am averaging and translating colors correctly for the ring spectrometer

$fiel = "1.png";
list($width, $height, $type, $attr) = getimagesize($fiel);
echo "<img src=\"". $fiel."\" $attr alt=\"getimagesize() example\" />";
$im = imagecreatefrompng("1.png");
$Pi = pi();

$centerX = $width / 2;
$centerY = $height / 2;
echo " The picture here is " . $width . " wide, and " . $height . " tall. ";
echo " The center of the image is at " .$centerX . ", " . $centerY ;
echo ' Test Trig Fucntions php Get all cordinates for a circle ';
//$r = 1 ;
$sum = 0;
//echo 'Radiuz == ' . $r . ' X, Y, PixelColour at that point. ';

//Max radius
if ($centerX < $centerY){
	$maxRad = $centerX - 1;
}
	elseif 
		($centerY <= $centerX){
		$maxRad = $centerY -1;
	}

echo "Maximumux Radius is: " . $maxRad . " Ring Number, Average Value: ";

for($r=1; $r<=$maxRad; $r++ ){
	for ($a=0; $a<=360; $a++) {

$ax = $r*cos($a*$Pi/180) + $centerX ; //x
	 $ay = $r*sin($a*$Pi/180) + $centerY ; //y 
	 $PXCol = imagecolorat($im, $ax, $ay); //outputs a decimal number for color
//	 echo $ax . ", " . $ay . ", " . $PXCol . " ";
			$sum = $sum + $PXCol;
			$avg = $sum / 360;
			$trunc = round($avg);
		}
		echo $r . ", " . dechex($trunc) . " ";
}

// choose a color for the ellipse
$ellipseColor = imagecolorallocate($im, 0, 0, 255);

// draw the white ellipse
imagefilledellipse($im, $centerX, $centerY, 300, 300, $ellipseColor);

// Output the image.
//header("Content-type: image/png");
//imagepng($im);
//echo " Trucated Average: ".$trunc." ";
//echo " Average in Hex: ". dechex($trunc) ." ";
?>