功能强大的PHP图片处理类(水印、透明度、旋转)

php  /  管理员 发布于 7年前   152

非常强大的php图片处理类，可以自定义图片水印、透明度、图片缩放、图片锐化、图片旋转、图片翻转、图片剪切、图片反色。

 * 图片处理函数功能：缩放、剪切、相框、水印、锐化、旋转、翻转、透明度、反色
* 处理并保存历史记录的思路：当有图片有改动时自动生成一张新图片，命名方式可以考虑在原图片的基础上加上步骤，例如：图片名称+__第几步

具体代码如下：

 '没有找到相关图片!'     );     /**    * 构造函数：函数初始化    */    function __construct($PICTURE_URL){          $this -> get_info($PICTURE_URL);          }    function get_info($PICTURE_URL){     /**      * 处理原图片的信息,先检测图片是否存在,不存在则给出相应的信息      */      @$SIZE = getimagesize($PICTURE_URL);      if(!$SIZE){        exit($this -> ERROR['unalviable']);        }          // 得到原图片的信息类型、宽度、高度     $this -> PICTURE_MIME = $SIZE['mime'];      $this -> PICTURE_WIDTH = $SIZE[0];      $this -> PICTURE_HEIGHT = $SIZE[1];          // 创建图片     switch($SIZE[2]){      case 1:        $this -> PICTURE_CREATE = imagecreatefromgif($PICTURE_URL);        $this -> PICTURE_TYPE = "imagejpeg";        $this -> PICTURE_EXT = "jpg";        break;      case 2:        $this -> PICTURE_CREATE = imagecreatefromjpeg($PICTURE_URL);        $this -> PICTURE_TYPE = "imagegif";        $this -> PICTURE_EXT = "gif";        break;      case 3:        $this -> PICTURE_CREATE = imagecreatefrompng($PICTURE_URL);        $this -> PICTURE_TYPE = "imagepng";        $this -> PICTURE_EXT = "png";        break;        }         /**      * 文字颜色转换16进制转换成10进制      */      preg_match_all("/([0-f]){2,2}/i", $this -> FONT_COLOR, $MATCHES);      if(count($MATCHES) == 3){      $this -> RED = hexdec($MATCHES[0][0]);      $this -> GREEN = hexdec($MATCHES[0][1]);      $this -> BLUE = hexdec($MATCHES[0][2]);      }    }   # end of __construct /**  * 将16进制的颜色转换成10进制的（R，G，B）  */ function hex2dec(){    preg_match_all("/([0-f]){2,2}/i", $this -> FONT_COLOR, $MATCHES);    if(count($MATCHES) == 3){      $this -> RED = hexdec($MATCHES[0][0]);      $this -> GREEN = hexdec($MATCHES[0][1]);      $this -> BLUE = hexdec($MATCHES[0][2]);      }    }   // 缩放类型 function zoom_type($ZOOM_TYPE){    $this -> ZOOM = $ZOOM_TYPE;    }   // 对图片进行缩放,如果不指定高度和宽度就进行缩放 function zoom(){    // 缩放的大小   if($this -> ZOOM == 0){      $this -> ZOOM_WIDTH = $this -> PICTURE_WIDTH * $this -> ZOOM_MULTIPLE;      $this -> ZOOM_HEIGHT = $this -> PICTURE_HEIGHT * $this -> ZOOM_MULTIPLE;      }    // 新建一个真彩图象   $this -> TRUE_COLOR = imagecreatetruecolor($this -> ZOOM_WIDTH, $this -> ZOOM_HEIGHT);    $WHITE = imagecolorallocate($this -> TRUE_COLOR, 255, 255, 255);    imagefilledrectangle($this -> TRUE_COLOR, 0, 0, $this -> ZOOM_WIDTH, $this -> ZOOM_HEIGHT, $WHITE);    imagecopyresized($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> ZOOM_WIDTH, $this -> ZOOM_HEIGHT, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);    }   # end of zoom // 裁切图片,按坐标或自动 function cut(){    $this -> TRUE_COLOR = imagecreatetruecolor($this -> CUT_WIDTH, $this -> CUT_WIDTH);    imagecopy($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, 0, $this -> CUT_X, $this -> CUT_Y, $this -> CUT_WIDTH, $this -> CUT_HEIGHT);    }   # end of cut /**  * 在图片上放文字或图片  * 水印文字  */ function _mark_text(){    $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);    $this -> WORD = mb_convert_encoding($this -> FONT_WORD, 'utf-8', 'gb2312');   /**    * 取得使用 TrueType 字体的文本的范围    */    $TEMP = imagettfbbox($this -> FONT_SIZE, 0, $this -> FONT_PATH, $this -> WORD);    $WORD_LENGTH = strlen($this -> WORD);    $WORD_WIDTH = $TEMP[2] - $TEMP[6];    $WORD_HEIGHT = $TEMP[3] - $TEMP[7];   /**    * 文字水印的默认位置为右下角    */    if($this -> WORD_X == ""){      $this -> WORD_X = $this -> PICTURE_WIDTH - $WORD_WIDTH;      }    if($this -> WORD_Y == ""){      $this -> WORD_Y = $this -> PICTURE_HEIGHT - $WORD_HEIGHT;      }    imagesettile($this -> TRUE_COLOR, $this -> PICTURE_CREATE);    imagefilledrectangle($this -> TRUE_COLOR, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT, IMG_COLOR_TILED);    $TEXT2 = imagecolorallocate($this -> TRUE_COLOR, $this -> RED, $this -> GREEN, $this -> Blue);    imagettftext($this -> TRUE_COLOR, $this -> FONT_SIZE, $this -> ANGLE, $this -> WORD_X, $this -> WORD_Y, $TEXT2, $this -> FONT_PATH, $this -> WORD);    }  /**  * 水印图片  */  function _mark_picture(){     /**    * 获取水印图片的信息    */    @$SIZE = getimagesize($this -> FORCE_URL);    if(!$SIZE){      exit($this -> ERROR['unalviable']);      }    $FORCE_PICTURE_WIDTH = $SIZE[0];    $FORCE_PICTURE_HEIGHT = $SIZE[1];    // 创建水印图片   switch($SIZE[2]){    case 1:      $FORCE_PICTURE_CREATE = imagecreatefromgif($this -> FORCE_URL);      $FORCE_PICTURE_TYPE = "gif";      break;    case 2:      $FORCE_PICTURE_CREATE = imagecreatefromjpeg($this -> FORCE_URL);      $FORCE_PICTURE_TYPE = "jpg";      break;    case 3:      $FORCE_PICTURE_CREATE = imagecreatefrompng($this -> FORCE_URL);      $FORCE_PICTURE_TYPE = "png";      break;      }   /**    * 判断水印图片的大小，并生成目标图片的大小，如果水印比图片大，则生成图片大小为水印图片的大小。否则生成的图片大小为原图片大小。    */    $this -> NEW_PICTURE = $this -> PICTURE_CREATE;    if($FORCE_PICTURE_WIDTH > $this -> PICTURE_WIDTH){    $CREATE_WIDTH = $FORCE_PICTURE_WIDTH - $this -> FORCE_START_X;    }else{    $CREATE_WIDTH = $this -> PICTURE_WIDTH;    }  if($FORCE_PICTURE_HEIGHT > $this -> PICTURE_HEIGHT){    $CREATE_HEIGHT = $FORCE_PICTURE_HEIGHT - $this -> FORCE_START_Y;    }else{    $CREATE_HEIGHT = $this -> PICTURE_HEIGHT;    } /**  * 创建一个画布  */  $NEW_PICTURE_CREATE = imagecreatetruecolor($CREATE_WIDTH, $CREATE_HEIGHT);  $WHITE = imagecolorallocate($NEW_PICTURE_CREATE, 255, 255, 255); /**  * 将背景图拷贝到画布中  */  imagecopy($NEW_PICTURE_CREATE, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);  /**  * 将目标图片拷贝到背景图片上  */  imagecopy($NEW_PICTURE_CREATE, $FORCE_PICTURE_CREATE, $this -> FORCE_X, $this -> FORCE_Y, $this -> FORCE_START_X, $this -> FORCE_START_Y, $FORCE_PICTURE_WIDTH, $FORCE_PICTURE_HEIGHT);  $this -> TRUE_COLOR = $NEW_PICTURE_CREATE;  }  # end of mark function alpha_(){  $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);  $rgb = "#CDCDCD";  $tran_color = "#000000";  for($j = 0;$j <= $this -> PICTURE_HEIGHT-1;$j++){    for ($i = 0;$i <= $this -> PICTURE_WIDTH-1;$i++)   {      $rgb = imagecolorat($this -> PICTURE_CREATE, $i, $j);      $r = ($rgb >> 16) & 0xFF;      $g = ($rgb >> 8) & 0xFF;      $b = $rgb & 0xFF;      $now_color = imagecolorallocate($this -> PICTURE_CREATE, $r, $g, $b);      if ($now_color == $tran_color)     {        continue;        }     else       {        $color = imagecolorallocatealpha($this -> PICTURE_CREATE, $r, $g, $b, $ALPHA);        imagesetpixel($this -> PICTURE_CREATE, $ALPHA_X + $i, $ALPHA_Y + $j, $color);        }      $this -> TRUE_COLOR = $this -> PICTURE_CREATE;          }    }  }  /**  * 图片旋转:  * 沿y轴旋转  */  function turn_y(){  $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);  for ($x = 0; $x < $this -> PICTURE_WIDTH; $x++) {    imagecopy($this -> TRUE_COLOR, $this -> PICTURE_CREATE, $this -> PICTURE_WIDTH - $x - 1, 0, $x, 0, 1, $this -> PICTURE_HEIGHT);    }  } /**  * 沿X轴旋转  */  function turn_x(){    $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);    for ($y = 0; $y < $this -> PICTURE_HEIGHT; $y++){      imagecopy($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, $this -> PICTURE_HEIGHT - $y - 1, 0, $y, $this -> PICTURE_WIDTH, 1);    }  }  /**  * 任意角度旋转  */  function turn(){    $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);    imageCopyResized($this -> TRUE_COLOR, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);    $WHITE = imagecolorallocate($this -> TRUE_COLOR, 255, 255, 255);    $this -> TRUE_COLOR = imagerotate ($this -> TRUE_COLOR, $this -> CIRCUMROTATE, $WHITE);  } /**  * 图片锐化  */  function sharp(){    $this -> TRUE_COLOR = imagecreatetruecolor($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);    $cnt = 0;    for ($x = 0; $x < $this -> PICTURE_WIDTH; $x++){      for ($y = 0; $y < $this -> PICTURE_HEIGHT; $y++){        $src_clr1 = imagecolorsforindex($this -> TRUE_COLOR, imagecolorat($this -> PICTURE_CREATE, $x-1, $y-1));        $src_clr2 = imagecolorsforindex($this -> TRUE_COLOR, imagecolorat($this -> PICTURE_CREATE, $x, $y));        $r = intval($src_clr2["red"] + $this -> SHARP * ($src_clr2["red"] - $src_clr1["red"]));        $g = intval($src_clr2["green"] + $this -> SHARP * ($src_clr2["green"] - $src_clr1["green"]));        $b = intval($src_clr2["blue"] + $this -> SHARP * ($src_clr2["blue"] - $src_clr1["blue"]));        $r = min(255, max($r, 0));        $g = min(255, max($g, 0));        $b = min(255, max($b, 0));        if (($DST_CLR = imagecolorexact($this -> PICTURE_CREATE, $r, $g, $b)) == -1)          $DST_CLR = imagecolorallocate($this -> PICTURE_CREATE, $r, $g, $b);        $cnt++;        if ($DST_CLR == -1) die("color allocate faile at $x, $y ($cnt).");        imagesetpixel($this -> TRUE_COLOR, $x, $y, $DST_CLR);     }   }  } /**  * 将图片反色处理??  */  function return_color(){ /**  * 创建一个画布  */  $NEW_PICTURE_CREATE = imagecreate($this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);  $WHITE = imagecolorallocate($NEW_PICTURE_CREATE, 255, 255, 255); /**  * 将背景图拷贝到画布中  */  imagecopy($NEW_PICTURE_CREATE, $this -> PICTURE_CREATE, 0, 0, 0, 0, $this -> PICTURE_WIDTH, $this -> PICTURE_HEIGHT);  $this -> TRUE_COLOR = $NEW_PICTURE_CREATE;  }  /**  * 生成目标图片并显示  */  function show(){  // 判断浏览器,若是IE就不发送头 if(isset($_SERVER['HTTP_USER_AGENT']))   {    $ua = strtoupper($_SERVER['HTTP_USER_AGENT']);    if(!preg_match('/^.*MSIE.*\)$/i', $ua))     {      header("Content-type:$this->PICTURE_MIME");      }    }  $OUT = $this -> PICTURE_TYPE;  $OUT($this -> TRUE_COLOR);  }  /**  * 生成目标图片并保存  */  function save_picture(){  // 以 JPEG 格式将图像输出到浏览器或文件 $OUT = $this -> PICTURE_TYPE;  if(function_exists($OUT)){    // 判断浏览器,若是IE就不发送头   if(isset($_SERVER['HTTP_USER_AGENT']))     {      $ua = strtoupper($_SERVER['HTTP_USER_AGENT']);      if(!preg_match('/^.*MSIE.*\)$/i', $ua))       {        header("Content-type:$this->PICTURE_MIME");        }      }    if(!$this -> TRUE_COLOR){      exit($this -> ERROR['unavilable']);      }else{      $OUT($this -> TRUE_COLOR, $this -> DEST_URL);      $OUT($this -> TRUE_COLOR);      }    }  } /**  * 析构函数：释放图片  */  function __destruct(){ /**  * 释放图片  */  imagedestroy($this -> TRUE_COLOR);  imagedestroy($this -> PICTURE_CREATE);  }  # end of class } ?> 

这就是非常强大的php图片处理类，好好收藏，亲，相信以后一定会派上用场的。

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