PHP图像处理类库及演示分享

Img.php

 _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,0,$this -> Height,$this -> Width,0,$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($ColorArr[1]),hexdec($ColorArr[2]),hexdec($ColorArr[3])); //设置文字颜色    imagettftext($this -> _Img,$this -> FontSize,0,$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),mt_rand(0,156),mt_rand(0,156)); //随机生成验证码值的颜色      imagettftext($this -> _Img,$this -> FontSize,mt_rand(-30,30),$_X*$i+mt_rand(1,5),$this -> Height / 1.3,$Color,__WEBROOT__.$this -> Font,$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,mt_rand(0,156),mt_rand(0,156),mt_rand(0,156));      imageline($this -> _Img,mt_rand(0,$this -> Width),mt_rand(0,$this -> Height),mt_rand(0,$this -> Width),mt_rand(0,$this -> Height),$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,$this -> _FileImg,0,0,0,0,$this -> Width,$this -> Height,$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;  }}

使用示例

$Img = new Img(); $Options[''Width''] = 300;$Options[''Height''] = 100;$Options[''Content''] = "Test Create Img";$Options[''FontColor''] = "FF0000";$Options[''BackgroundColor''] = "AAAAAA";$Img -> Style($Options) -> Create_Img_Jpg(); if($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);}
转载自:http://www.aspnetjia.com