功能强大的PHP图片处理类(水印、透明度、旋转)

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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:

PHP;"> var $PICTURE_WIDTH; //原图片宽度
var $PICTURE_HEIGHT; //原图片高度

/**

  • 水印的类型,默认的为水印文字
    */
    var $MARK_TYPE = 1;
    var $WORD; //经过UTF-8后的文字
    var $WORD_X; //文字横坐标
    var $WORD_Y; //文字纵坐标
    var $FONT_TYPE; //字体类型
    var $FONT_SIZE = "12"; //字体大小
    var $FONT_WORD; //文字
    var $ANGLE = 0; //文字的角度,默认为0
    var $FONT_COLOR = "#000000"; //文字颜色
    var $FONT_PATH = "font/simkai.ttf"; //字体库,默认为宋体
    var $FORCE_URL; //水印图片
    var $FORCE_X = 0; //水印横坐标
    var $FORCE_Y = 0; //水印纵坐标
    var $FORCE_START_X = 0; //切起水印的图片横坐标
    var $FORCE_START_Y = 0; //切起水印的图片纵坐标

var $PICTURE_TYPE; //图片类型
var $PICTURE_MIME; //输出的头部

/**

  • 缩放比例为1的话就按缩放高度和宽度缩放
    */
    var $ZOOM = 1; //缩放类型
    var $ZOOM_MULTIPLE; //缩放比例
    var $ZOOM_WIDTH; //缩放宽度
    var $ZOOM_HEIGHT; //缩放高度

/**

  • 裁切,按比例和固定长度、宽度
    */
    var $CUT_TYPE = 1; //裁切类型
    var $CUT_X = 0; //裁切的横坐标
    var $CUT_Y = 0; //裁切的纵坐标
    var $CUT_WIDTH = 100; //裁切的宽度
    var $CUT_HEIGHT = 100; //裁切的高度

/**

  • 锐化
    */
    var $SHARP = "7.0"; //锐化程度

/**

  • 透明度处理
    */
    var $ALPHA = '100'; //透明度在0-127之间
    var $ALPHA_X = "90";
    var $ALPHA_Y = "50";

/**

  • 任意角度旋转
    */
    var $CIRCUMROTATE = "90.0"; //注意,必须为浮点数

/**

  • 出错信息
    */
    var $ERROR = array(
    'unalviable' => '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;
    }

/** 
 * <a href="/tag/wenzi/" target="_blank" class="keywords">文字</a>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,$MATCHES);
    if(count($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);
imagefilledrectangle($this -> TRUE_COLOR,$this -> ZOOM_WIDTH,$this -> ZOOM_HEIGHT,$WHITE);
imagecopyresized($this -> TRUE_COLOR,$this -> PICTURE_CREATE,$this -> PICTURE_WIDTH,$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,$this -> CUT_X,$this -> CUT_Y,$this -> CUT_WIDTH,$this -> CUT_HEIGHT);
}

end of cut

/**

  • 图片上放文字图片
  • 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,$this -> FONT_PATH,$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,$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 -> 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);
    /**
  • 将背景图拷贝到画布中
    */
    imagecopy($NEW_PICTURE_CREATE,$this -> PICTURE_HEIGHT);

/**

  • 将目标图片拷贝到背景图片
    */
    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,$b,$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_WIDTH - $x - 1,$x,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_HEIGHT - $y - 1,$y,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_HEIGHT);
    $WHITE = imagecolorallocate($this -> TRUE_COLOR,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,$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,$b)) == -1)
    $DST_CLR = imagecolorallocate($this -> PICTURE_CREATE,$b);
    $cnt++;
    if ($DST_CLR == -1) die("color allocate faile at $x,$y ($cnt).");
    imagesetpixel($this -> TRUE_COLOR,$DST_CLR);
    }
    }
    }
    /**
  • 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,$this -> PICTURE_HEIGHT);
    $this -> TRUE_COLOR = $NEW_PICTURE_CREATE;
    }

/**

  • 生成目标图片显示
    /
    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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