Графические часы на PHP

<?php
 
$kvadrat =200;


function Arrow ($image,$Time,$Divider,$color) {
GLOBAL $kvadrat,$center;
	$alpha = (360/$Divider)*$Time;
	$length = ($kvadrat/2) - 45;
	$alpha = deg2rad($alpha);
	$x2 = $center + sin($alpha)*$length;
	$y2 = $center - cos($alpha) *$length;
	imageline ($image, $center, $center, $x2, $y2,$color);
}
 
function Digital_panel ($image){
GLOBAL $kvadrat,$center;
 	for($value=1; $value<=12; $value++) {
		$length = ($kvadrat/2) - 20;
		$alpha = (360/12)*$value;
		$alpha = deg2rad($alpha);
		$x2 = $center + sin($alpha)*$length;
		$y2 = $center - cos($alpha)*$length;
		$font = (preg_match ("/3|6|9|12/",$value))?3:1;
		imagestring($image, $font,$x2-3,$y2-5, $value, 0xFFFFFF);
	}
}
 
function Points_panel ($image){
GLOBAL $kvadrat,$center;
	 for($value=1; $value<=60; $value++) {
		$length = ($kvadrat/2) - 33;
		$alpha = (360/60)*$value;
		$alpha = deg2rad($alpha);
		$x2 = $center + sin($alpha)*$length;
		$y2 = $center - cos($alpha)*$length;
		$color = 0xc0ff00;
		$plus = 1;
		if (ereg("5$|10|20|25|35|40|50|55",$value)) { $color = 0xc06000;$plus = 2;}
		if (ereg("15|30|45|60",$value)) {$color = 0xc00000;$plus = 3;}
		imagefilledrectangle ($image, $x2, $y2, $x2+$plus, $y2+$plus,$color);
	}
}
 
 
$center = ($kvadrat/2);
 
header("Content-type: image/png");
$image = imagecreatetruecolor($kvadrat,$kvadrat);
imagefill($image, 0, 0, 0x000000);
 
//час
Arrow ($image,date("g"),12,0xc00000);
//минуты
Arrow ($image,date("i"),60,0xc06000);
//секунды
Arrow ($image,date("s"),60,0xc0ff00);

Digital_panel($image);
Points_panel($image);
 
//вывод
imagepng($image);
imagedestroy($image);
 
 
?>