Revise paste Color Is off.

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

$fiel = "red.jpg";
list($width, $height, $type, $attr) = getimagesize($fiel);
echo "<img src=\"". $fiel."\" $attr alt=\"getimagesize() example\" />";

$centerX = $width / 2;
$centerY = $height / 2;
echo " The center of the image is at " .$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. ';

$im = imagecreatefromjpeg($fiel);
$Pi = pi(); 
for ($a=0; $a<=1; $a++) {

$ax = $r*cos($a*$Pi/180) + $centerX ; //x
 $ay = $r*sin($a*$Pi/180) + $centerY ; //y 
 $PXCol = imagecolorat($im, $ax, $ay);
 echo $ax . ", " . $ay . ", " . $PXCol . " ";
//$sum = $sum + $PXCol;
//$avg = $sum / 360;

}
//Says red ff0000 is 16646144

//echo " Average Pixel Value in ring is: ". $avg . " ";
//$trunc = round($avg);
//echo " Trucated Average: ".$trunc." ";
echo " Average in Hex: ". dechex(16646144) ." ";
echo " The value FF0000 should be: ". hexdec("#FF0000") ." ";