急 求助！！我的类哪里写错了 帮忙指下

Question

<?php
class Code{
private $width;//图片宽
private $height;//图片高
private $codenum;//验证码字符数
private $disnum;//干扰元素个数
private $image;//画布
private $strcode;//验证码字符串
private $iscurve;//是否开启曲线


function __construct($width=80,$height=30,$num=4,$disnum=100,$iscurve=1){
$this->width=$width;
$this->height=$height;
$this->num=$num;
$this->disnum=$disnum;
$this->strcode=$this->createCode();
$this->iscurve=$iscurve;

} public function createCode(){
$this->createImage();
$this->createStrCode();
$this->writeCode();
$this->createDisCode();
if($iscurve){
$this->createDisCurve();
}
$this->imageType();
} public function outCode(){
return $this->strcode;
} private function createImage(){//创建画布
$this->image = imagecreatetruecolor($this->width, $this->height);
$bgcolor = imagecolorallocate($this->image, 255, 255, 255);
$reccolor = imagecolorallocate($this->image, 0, 0, 0);
imagefill($this->image, 0, 0, $bgcolor);
imagerectangle($this->image, 1, 1, $this->width-2, $this->height-2, $reccolor);
} private function createStrCode(){//生成字符串验证码
$text="";
for($i=0; $i<$this->codenum; $i++){
      switch(rand(0, 2)){
      case 0:
      $text.= sprintf("%c", rand(48,57));
      break;
      case 1:
      $text.= sprintf("%c", rand(65, 90));
      break;
      case 2:
      $text.= sprintf("%c", rand(97, 122));
      break;
      }
}
return $text;

}
private function writeCode(){ //把字符串写入图片中
for($i=0;$i<$this->codenum;$i++){
$col=imagecolorallocate($this->image,rand(0,255),rand(100,255),rand(0,255));
$x=floor($this->width/$this->codenum)*$i+rand(2,10);
$y=rand(0,$this->height-15);
imagechar($this->image,2,$x,$y,$this->strcode[$i],$col);
}
} private function createDisCode(){//生成干扰元素
for($i=0;$i<$disnum;$i++){
$col=imagecolorallocate($this->image,rand(0,255),rand(0,255),rand(0,255));
imagesetpixel($image,rand(0,$this->width-2),rand(0,$this->height-2),$col);
}
} private function createDisCurve(){//生成干扰曲线
for($i=0; $i<3; $i++){
$curvecolor = imagecolorallocate($this->image, rand(180, 200), rand(180, 200), rand(180, 200));
imagearc($this->image, rand(0, $this->width), rand(0, $this->height), rand($this->width, 2*$this->width), rand($this->height, 2*$this->height), rand(0, 90), rand(180, 360), $curvecolor);
}
}
private function imageType(){
if(imagetypes() & IMG_GIF){
header("content-type:images/gif");
imagegif($this->image);
}elseif(imagetypes() & IMG_JPG){
header("content-type:images/jpeg");
imagejpeg($this->image);
}elseif(imagetypes() & IMG_PNG){
header("content-type:images/png");
imagepng($this->image);
}elseif(imagetypes() & IMG_WBMP){
header("content-type:images/vnd.wap.wbmp");
imagewbmp($this->image);
}else{
die("此格式不支持");
}
} function __destruct(){//销毁图片
imagedestroy($this->image);
}
}
?>

Answer 1

<?php
error_reporting(E_ALL & ~E_NOTICE);
class Code{ 
private $width;//图片宽 
private $height;//图片高 
private $codenum;//验证码字符数 
private $disnum;//干扰元素个数 
private $image;//画布 
private $strcode;//验证码字符串 
private $iscurve;//是否开启曲线 
function __construct($width=80,$height=30,$num=4,$disnum=100,$iscurve=1){ 
$this->width=$width; 
$this->height=$height; 
$this->codenum=$num; 
$this->disnum=$disnum; 
$this->iscurve=$iscurve; 
$this->strcode=$this->createCode(); 
} public function createCode(){ 
$this->createImage(); 
$this->strcode = $this->createStrCode(); 
$this->writeCode(); 
$this->createDisCode(); 
if($this->iscurve){ 
$this->createDisCurve(); 
} 
$this->imageType(); 
} public function outCode(){ 
return $this->strcode; 
} private function createImage(){//创建画布 
$this->image = imagecreatetruecolor($this->width, $this->height); 
$bgcolor = imagecolorallocate($this->image, 255, 255, 255); 
$reccolor = imagecolorallocate($this->image, 0, 0, 0); 
imagefill($this->image, 0, 0, $bgcolor); 
imagerectangle($this->image, 1, 1, $this->width-2, $this->height-2, $reccolor); 
} private function createStrCode(){//生成字符串验证码 
$text=""; 
for($i=0; $i < $this->codenum; $i++){ 
    switch(rand(0, 2)){ 
    case 0: 
    $text.= sprintf("%c", rand(48,57)); 
    break; 
    case 1: 
    $text.= sprintf("%c", rand(65, 90)); 
    break; 
    case 2: 
    $text.= sprintf("%c", rand(97, 122)); 
    break; 
    } 
} 
return $text; } 
private function writeCode(){ //把字符串写入图片中 

for($i=0;$i <$this->codenum;$i++){ 
$col=imagecolorallocate($this->image,rand(0,255),rand(100,255),rand(0,255)); 
$x=floor($this->width/$this->codenum)*$i+rand(2,10); 
$y=rand(0,$this->height-15); 
imagechar($this->image,2,$x,$y,$this->strcode[$i],$col); 
} 
} private function createDisCode(){//生成干扰元素 
for($i=0;$i <$disnum;$i++){ 
$col=imagecolorallocate($this->image,rand(0,255),rand(0,255),rand(0,255)); 
imagesetpixel($image,rand(0,$this->width-2),rand(0,$this->height-2),$col); 
} 
} private function createDisCurve(){//生成干扰曲线 
for($i=0; $i <3; $i++){ 
$curvecolor = imagecolorallocate($this->image, rand(180, 200), rand(180, 200), rand(180, 200)); 
imagearc($this->image, rand(0, $this->width), rand(0, $this->height), rand($this->width, 2*$this->width), rand($this->height, 2*$this->height), rand(0, 90), rand(180, 360), $curvecolor); 
} 
} 
private function imageType(){ 
if(imagetypes() & IMG_GIF){ 
header("content-type:images/gif"); 
imagegif($this->image); 
}elseif(imagetypes() & IMG_JPG){ 
header("content-type:images/jpeg"); 
imagejpeg($this->image); 
}elseif(imagetypes() & IMG_PNG){ 
header("content-type:images/png"); 
imagepng($this->image); 
}elseif(imagetypes() & IMG_WBMP){ 
header("content-type:images/vnd.wap.wbmp"); 
imagewbmp($this->image); 
}else{ 
die("此格式不支持"); 
} 
} function __destruct(){//销毁图片 
imagedestroy($this->image); 
} 
} 
$code  = new Code();
$code->createCode();
?>

Answer 2

再修正一次!<?php
error_reporting(E_ALL & ~E_NOTICE);
class Code{ 
private $width;//图片宽 
private $height;//图片高 
private $codenum;//验证码字符数 
private $disnum;//干扰元素个数 
private $image;//画布 
private $strcode;//验证码字符串 
private $iscurve;//是否开启曲线 
function __construct($width=80,$height=30,$num=4,$disnum=100,$iscurve=1){ 
$this->width=$width; 
$this->height=$height; 
$this->codenum=$num; 
$this->disnum=$disnum; 
$this->iscurve=$iscurve; 
} public function createCode(){ 
$this->createImage(); 
$this->strcode = $this->createStrCode(); 
$this->writeCode(); 
$this->createDisCode(); 
if($this->iscurve){ 
$this->createDisCurve(); 
} 
$this->imageType(); 
} public function outCode(){ 
return $this->strcode; 
} private function createImage(){//创建画布 
$this->image = imagecreatetruecolor($this->width, $this->height); 
$bgcolor = imagecolorallocate($this->image, 255, 255, 255); 
$reccolor = imagecolorallocate($this->image, 0, 0, 0); 
imagefill($this->image, 0, 0, $bgcolor); 
imagerectangle($this->image, 1, 1, $this->width-2, $this->height-2, $reccolor); 
} private function createStrCode(){//生成字符串验证码 
$text=""; 
for($i=0; $i < $this->codenum; $i++){ 
    switch(rand(0, 2)){ 
    case 0: 
    $text.= sprintf("%c", rand(48,57)); 
    break; 
    case 1: 
    $text.= sprintf("%c", rand(65, 90)); 
    break; 
    case 2: 
    $text.= sprintf("%c", rand(97, 122)); 
    break; 
    } 
} 
return $text; } 
private function writeCode(){ //把字符串写入图片中 

for($i=0;$i <$this->codenum;$i++){ 
$col=imagecolorallocate($this->image,rand(0,255),rand(100,255),rand(0,255)); 
$x=floor($this->width/$this->codenum)*$i+rand(2,10); 
$y=rand(0,$this->height-15); 
imagechar($this->image,2,$x,$y,$this->strcode[$i],$col); 
} 
} private function createDisCode(){//生成干扰元素 
for($i=0;$i <$disnum;$i++){ 
$col=imagecolorallocate($this->image,rand(0,255),rand(0,255),rand(0,255)); 
imagesetpixel($image,rand(0,$this->width-2),rand(0,$this->height-2),$col); 
} 
} private function createDisCurve(){//生成干扰曲线 
for($i=0; $i <3; $i++){ 
$curvecolor = imagecolorallocate($this->image, rand(180, 200), rand(180, 200), rand(180, 200)); 
imagearc($this->image, rand(0, $this->width), rand(0, $this->height), rand($this->width, 2*$this->width), rand($this->height, 2*$this->height), rand(0, 90), rand(180, 360), $curvecolor); 
} 
} 
private function imageType(){ 
if(imagetypes() & IMG_GIF){ 
header("content-type:images/gif"); 
imagegif($this->image); 
}elseif(imagetypes() & IMG_JPG){ 
header("content-type:images/jpeg"); 
imagejpeg($this->image); 
}elseif(imagetypes() & IMG_PNG){ 
header("content-type:images/png"); 
imagepng($this->image); 
}elseif(imagetypes() & IMG_WBMP){ 
header("content-type:images/vnd.wap.wbmp"); 
imagewbmp($this->image); 
}else{ 
die("此格式不支持"); 
} 
} function __destruct(){//销毁图片 
imagedestroy($this->image); 
} 
} 
$code  = new Code();
$code->createCode();
?>