class Img {
protected $_Img; //图片源
protected $_FileImg; //加载的图片源
protected $_FileInfo; //加载的图片的信息数组
protected $_PicInfo; //加载的图片的宽高等信息数组
protected $_Rand = 'abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ1234567890'; //随机因子
protected $_Code = ''; //验证码
public $Width = 300;//图片默认宽
public $Height = 80; //图片默认高
public $BackgroundColor = "000000";
public $Font = "/phps/Public/Font/ARIALNB.TTF"; //默认字体
public $FontSize = 16; //默认字体字号
public $FontColor = "ffffff"; //默认字体颜色
public $Content = "Test Word";
public $Align = "left";
public $Codes = 4; //验证码个数
public $Line = 6; //干扰线条的个数
public $LoadErr = ''; //错误信息

//public function __construct(){}

/** 设置图片属性

• @param array $Options 属性数组
• @return $this 返回对象
  */
  public function Style($Options){
  $this -> _Re_Set();
  foreach($Options as $K=>$V){
  if(in_array($K,array('Width','Height','BackgroundColor','Font','FontSize','FontColor','Content','Align','Codes','Line','Snow'))){
  if($K == "BackgroundColor" || $K == "FontColor"){
  if(preg_match("#([a-zA-Z0-9]{6})#",$V)) $this -> $K = $V;
  }else{
  $this -> $K = $V;
  }
  }
  }
  return $this;
  }

/**

• 重置属性，不提供外部访问
  */
  protected function _Re_Set(){
  $this -> Width = 100;
  $this -> Height = 30;
  $this -> BackgroundColor = "000000";
  $this -> Font = "/PHPs/Public/Font/ARIALNB.TTF";
  $this -> FontSize = 16;
  $this -> FontColor = "ffffff";
  $this -> Align = "left";
  $this -> Codes =4;
  $this -> Line = 6;
  }

/**

• 创建图像源、添加背景、创建图像
• @param bool $BGC 指定是否创建背景色及矩形块
  */
  protected function _Create_Img_GB($BGC = True){
  $this -> _Img = imagecreatetruecolor($this -> Width,$this -> Height); //创建背景源
  if($BGC){
  preg_match("#([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})#",$this -> BackgroundColor,$ColorArr); //将颜色值分隔成三组16位进制数
  $Color = imagecolorallocate($this -> _Img,hexdec($ColorArr[1]),hexdec($ColorArr[2]),hexdec($ColorArr[3])); //给Img图像源添加背景色
  imagefilledrectangle($this -> _Img,$this -> Height,$this -> Width,$Color); //创建图像
  }
  }

/**

• 创建随机验证码
  */
  protected function _Create_Code(){
  $Len = strlen($this -> _Rand) - 1;
  for($i = 0;$i < $this -> Codes;$i++){
  $this -> _Code .= $this -> _Rand[mt_rand(0,$Len)];
  }
  }

/**

• 向图像中写入字符串，暂不支持中文
  /
  protected function _Write_Text(){
  $FontWidth = imagefontwidth($this -> FontSize); //获取字号的一个字符的宽度
  preg_match_all('/(.)/us',$this -> Content,$TextArr); //将内容分隔成数组一遍统计个数
  $FontHeight = imagefontheight($this -> FontSize); //获取字号的高度
  $X = ceil(($this -> Width - ($FontWidth count($TextArr[0]))) / 2); //设置X轴距左边距的距离
  $Y = ceil(($this -> Height + $FontHeight) / 2); //设置Y轴距上边距的距离
  preg_match("#([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})([a-zA-Z0-9]{2})#",$this -> FontColor,$ColorArr);
  $Color = imagecolorallocate($this -> _Img,hexdec($ColorArr[3])); //设置文字颜色
  imagettftext($this -> _Img,$this -> FontSize,$X,$Y,$Color,WEBROOT.$this -> Font,$this -> Content); //写入内容
  }

/**

• 向图像中写入验证码
  /
  protected function _Write_Code(){
  $_X = $this -> Width / $this -> Codes; //设置宽高比
  for($i = 0;$i < $this -> Codes;$i++){ //循环Codes次，每次生成一位验证码值
  $Color = imagecolorallocate($this -> _Img,mt_rand(0,156),156)); //随机生成验证码值的颜色
  imagettftext($this -> _Img,mt_rand(-30,30),$_X$i+mt_rand(1,5),$this -> Height / 1.3,$this -> _Code[$i]); //生成一位验证码值
  }
  }

/**

• 向图像中写入干扰线条
  */
  protected function _Write_Line() { //生成干扰线条
  for ($i=0;$i < $this -> Line;$i++) {
  $Color = imagecolorallocate($this -> _Img,156));
  imageline($this -> _Img,$this -> Width),$this -> Height),$Color);
  }
  }

/**

• 设置图像类型为JPEG
  */
  protected function _Img_Jpeg(){
  header('Content-type:image/jpeg');
  imagejpeg($this -> _Img);
  imagedestroy($this -> _Img);
  }

/**

• 设置图像类型为PNG
  */
  protected function _Img_Png(){
  header('Content-type:image/png');
  imagepng($this -> _Img);
  imagedestroy($this -> _Img);
  }

/**

• 创建JPEG的字符串图像
  */
  public function Create_Img_Jpg(){
  $this -> _Create_Img_GB(True);
  $this -> _Write_Text();
  $this -> _Img_Jpeg();
  }

/**

• 创建PNG的字符串图像
  */
  public function Create_Img_Png(){
  $this -> _Create_Img_GB(True);
  $this -> _Write_Text();
  $this -> _Img_Png();
  }

/**

• 创建验证码的PNG图像
  */
  public function Create_Verify(){
  $this -> BackgroundColor = '';
  for($I = 0;$I < 3;$I++){
  $this -> BackgroundColor .= dechex(mt_rand(20,155));
  }
  $this -> _Create_Img_GB(True);
  $this -> _Create_Code();
  $this -> _Write_Line();
  $this -> _Write_Code();
  $this -> _Img_Png();
  }

/**

• 外部获取MD5加密后的验证码
• @return string
  */
  public function Get_Verify(){
  return md5($this -> _Code);
  }

/**

• 加载一个图像文件，并获取图像相关信息
• @param string $FilePath 图像相对路径地址
• @return $this|bool 成功返回对象，否则返回FALSE
  */
  public function Load_Img($FilePath){
  $FilePath = WEBROOT.$FilePath;
  if(!is_file($FilePath)){
  $this -> LoadErr = "路径错误，文件不存在";
  Return False;
  }
  $this -> _PicInfo = getimagesize($FilePath);
  $this -> _FileInfo = pathinfo($FilePath);
  switch($this -> _PicInfo[2]){
  case 1:$this ->_FileImg = imagecreatefromgif($FilePath);break;
  case 2:$this ->_FileImg = imagecreatefromjpeg($FilePath);break;
  case 3:$this ->_FileImg = imagecreatefrompng($FilePath);break;
  default:$this -> LoadErr = "类型错误，不支持的图片类型";Return False;
  }
  Return True;
  }

/**

• 创建缩略图
• @param string $FileName 保存的图片名称前缀
• @param string $FilePath 保存图片的相对路径
• @return mixed 返回生成的图片的信息数组
  */
  public function Create_Thumb($FileName,$FilePath){
  $SavePath = WEBROOT.$FilePath;
  if(!file_exists($SavePath)){
  mkdir($SavePath,0777,true);
  }
  $FileName = $FileName.date("YmdHis").rand(100,999).'.'.$this -> _FileInfo['extension'];
  $FilePath = $FilePath.$FileName;
  $SavePath = $SavePath.$FileName;
  $this -> _Create_Img_GB(False);
  imagecopyresampled($this -> _Img,$this -> _FileImg,$this -> _PicInfo[0],$this -> _PicInfo[1]);
  switch($this -> _PicInfo[2]){
  case 1:imagegif($this -> _Img,$SavePath);break;
  case 2:imagejpeg($this -> _Img,$SavePath);break;
  case 3:imagepng($this -> _Img,$SavePath);break;
  }
  $FIleInfo['FileName'] = $FileName;
  $FIleInfo['FilePath'] = $FilePath;
  Return $FIleInfo;
  }
  }

if($Img -> Load_Img("/Public/images/ad1.png")){
$FileInfo = $Img -> Style(array('Width'=>30,'Height'=>30)) -> Create_Thumb("Thumb","/Uploads/images/");
var_dump($FileInfo);
}else{
die("加载图像失败,".$Img -> LoadErr);
}