美しい PHP 検証コード

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 class Imagecode{
 private $width ;
 private $height;
 private $counts;
 private $distrubcode;
 private $fonturl;
 private $session;
 function __construct($幅 = 120,$高さ = 30,$カウント = 5,$distrubcode="1235467890qwertyuipkjhgfdaszxcvbnm",$fonturl="C:WindowsFontsTektonPro-BoldCond.otf"){
 $this->width=$width;
 $this- >height=$height;
 $this->counts=$counts;
 $this->distrubcode=$distrubcode;
 $this->fonturl=$fonturl;
 $this->session=$this ->sessioncode();
 session_start();
 $_SESSION['code']=$this->session;
 }

 function imageout(){
 $im=$this->createimagesource();
 $this->setbackgroundcolor($im);
 $this->set_code($im);
 $this->setdistrubecode($im);
 ImageGIF($im);
 ImageDestroy($im);
 }

 プライベート関数 createimagesource(){
 return imagecreate($this->width,$this->height);
 }
 プライベート関数 setbackgroundcolor($im){
 $bgcolor = ImageColorAllocate($im, rand (200,255),rand(200,255),rand(200,255));//±3?°??é?
 imagefill($im,0,0,$bgcolor);
 }
 private function setdistrubecode($im){
 $count_h=$this->height;
 $cou=floor($count_h*2);
 for($i=0;$i<$cou;$i++){
 $x=rand(0,$ this->width);
 $y=rand(0,$this->height);
 $jiaodu=rand(0,360);
 $fontsize=rand(8,15);
 $fonturl=$this- >fonturl;
 $originalcode = $this->distrubcode;
 $countdistrub = strlen($originalcode);
 $dscode = $originalcode[rand(0,$countdistrub-1)];
 $color = ImageColorAllocate($ im, rand(40,140),rand(40,140),rand(40,140));
 imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$dscode);

 }
 }
プライベート関数 set_code($im){
 $width=$this->width;
 $counts=$this->counts;
 $height=$this->height;
 $scode=$this- >セッション;
 $y=floor($height/2)+floor($height/4);
 $fontsize=rand(30,35);
 $fonturl="C:WindowsFontsAdobeGothicStd-Bold.otf";/ /$this->fonturl;

 $counts=$this->counts;
 for($i=0;$i $char=$scode[$i];
 $x=floor($width/$counts)*$i+8;
 $jiaodu=rand(-20,30);
 $color = ImageColorAllocate($im,rand(0,50),rand(50,100), rand(100,140));
 imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$char);
 }



 }
 プライベート関数 sessioncode(){
 $オリジナルコード = $this->distrubcode;
 $countdistrub = strlen($originalcode);
 $_dscode = "";
 $counts=$this->counts;
 for($j=0;$j<$counts ;$j++){
 $dscode = $originalcode[rand(0,$countdistrub-1)];
 $_dscode.=$dscode;
 }
 return $_dscode;

 }
 }
 Header("Content-type : image/GIF");
 $imagecode=new Imagecode(160,50);
 $imagecode->imageout();

验证コード、PHP