PHP水印类,支持添加图片、文字、填充颜色区域的实现

<?php/** * 图片加水印类，支持文字水印、透明度设置、自定义水印位置等。 * 使用示例： *   $obj = new WaterMask($imgFileName);       //实例化对象 *   $obj->$waterType = 1;           //类型：0为文字水印、1为图片水印 *   $obj->$transparent = 45;         //水印透明度 *   $obj->$waterStr = 'icp.niufee.com';        //水印文字 *   $obj->$fontSize = 18;           //文字字体大小 *   $obj->$fontColor = array(255,255,255);        //水印文字颜色（RGB） *   $obj->$fontFile = 'AHGBold.ttf';       //字体文件 *   …… *   $obj->output();              //输出水印图片文件覆盖到输入的图片文件 * @modify liuzp111 */class WaterMask{  public $waterTypeImage   = false;                //水印类型：启用图片水印  public $waterTypeStr    = false;          //水印类型：启用文字水印  public $pos        = 0;          //水印位置  public $transparent    = 45;         //水印透明度(0---100)数值越大越不透明  public $waterStr      = 'icp.niufee.com';      //水印文字  public $fontSize      = 14;         //文字字体大小  public $fontColor     = array(0,0,0);          //水印文字颜色（RGB） 默认黑色  public $fontFile      = './font/simfang.ttf';      //字体文件  public $waterImg      = 'logo.png';       //水印图片  private $srcImg       = '';         //需要添加水印的图片  private $im         = '';         //图片句柄  private $water_im      = '';         //水印图片句柄  private $srcImg_info    = '';         //图片信息  private $waterImg_info   = '';         //水印图片信息  private $str_w       = '';         //水印文字宽度  private $str_h       = '';         //水印文字高度  private $x         = '';         //水印X坐标  private $y         = '';         //水印y坐标  public $output_img     = '';                  //存储输出图片到哪里  public $is_draw_rectangle = false;                  //是否绘制矩形区域 （暂不支持自定义位置）  //public $rectange_color   = '';                  //绘制矩形区域的颜色    private $result_array    = array();               //结果数组   public function __construct($img) {    //析构函数    //$this->srcImg = file_exists($img) ? $img : die('"'.$img.'" 源文件不存在！');    if(file_exists($img)){      $this->srcImg = $img;    }else{      return array('data'=>'','info'=>'源文件不存在!','status'=>0);    }  }  private function imginfo() {  //获取需要添加水印的图片的信息，并载入图片。    $this->srcImg_info = getimagesize($this->srcImg);    switch ($this->srcImg_info[2]) {      case 3:        $this->im = imagecreatefrompng($this->srcImg);        break 1;      case 2:        $this->im = imagecreatefromjpeg($this->srcImg);        break 1;      case 1:        $this->im = imagecreatefromgif($this->srcImg);        break 1;      default:        //die('原图片（'.$this->srcImg.'）格式不对，只支持PNG、JPEG、GIF。');        return array('data'=>'','info'=>'原图片（'.$this->srcImg.'）格式不对，只支持PNG、JPEG、GIF。','status'=>0);    }  }  private function waterimginfo() {  //获取水印图片的信息，并载入图片。    $this->waterImg_info = getimagesize($this->waterImg);    switch ($this->waterImg_info[2]) {      case 3:        $this->water_im = imagecreatefrompng($this->waterImg);        break 1;      case 2:        $this->water_im = imagecreatefromjpeg($this->waterImg);        break 1;      case 1:        $this->water_im = imagecreatefromgif($this->waterImg);        break 1;      default:        //die('水印图片（'.$this->srcImg.'）格式不对，只支持PNG、JPEG、GIF。');         return array('data'=>'','info'=>'水印图片（'.$this->srcImg.'）格式不对，只支持PNG、JPEG、GIF。','status'=>0);    }  }  private function waterpos() {  //水印位置算法    switch ($this->pos) {      case 0:   //随机位置        $this->x = rand(0,$this->srcImg_info[0]-$this->waterImg_info[0]);        $this->y = rand(0,$this->srcImg_info[1]-$this->waterImg_info[1]);        break 1;      case 1:   //上左        $this->x = 0;        $this->y = 0;        break 1;      case 2:   //上中        $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2;        $this->y = 0;        break 1;      case 3:   //上右        $this->x = $this->srcImg_info[0]-$this->waterImg_info[0];        $this->y = 0;        break 1;      case 4:   //中左        $this->x = 0;        $this->y = ($this->srcImg_info[1]-$this->waterImg_info[1])/2;        break 1;      case 5:   //中中        $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2;        $this->y = ($this->srcImg_info[1]-$this->waterImg_info[1])/2;        break 1;      case 6:   //中右        $this->x = $this->srcImg_info[0]-$this->waterImg_info[0];        $this->y = ($this->srcImg_info[1]-$this->waterImg_info[1])/2;        break 1;      case 7:   //下左        $this->x = 0;        $this->y = $this->srcImg_info[1]-$this->waterImg_info[1];        break 1;      case 8:   //下中        $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2;        $this->y = $this->srcImg_info[1]-$this->waterImg_info[1];        break 1;      case 9:   //下中偏上100px        $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2;        $this->y = $this->srcImg_info[1]-$this->waterImg_info[1] - 100;        break 1;      default:  //下右        $this->x = $this->srcImg_info[0]-$this->waterImg_info[0];        $this->y = $this->srcImg_info[1]-$this->waterImg_info[1];        break 1;    }  }  /**   * 水印文字图片位置，根据需求调整   */  private function waterposStr() {    $this->x = ($this->srcImg_info[0]-$this->waterImg_info[0])/2;    $this->y = $this->srcImg_info[1]-$this->waterImg_info[1] - 3;      }  private function waterimg($type='') {    if ($this->srcImg_info[0] <= $this->waterImg_info[0] || $this->srcImg_info[1] <= $this->waterImg_info[1]){      //die('水印比原图大！');      return array('data'=>'','info'=>'水印比原图大!','status'=>0);    }    if($type == 'waterstr'){      $this->waterposStr();    }else{      $this->waterpos();    }    $cut = imagecreatetruecolor($this->waterImg_info[0],$this->waterImg_info[1]);    imagecopy($cut,$this->im,0,0,$this->x,$this->y,$this->waterImg_info[0],$this->waterImg_info[1]);    $pct = $this->transparent;    imagecopy($cut,$this->water_im,0,0,0,0,$this->waterImg_info[0],$this->waterImg_info[1]);    imagecopymerge($this->im,$cut,$this->x,$this->y,0,0,$this->waterImg_info[0],$this->waterImg_info[1],$pct);  }  private function waterstr() {    $rect = imagettfbbox($this->fontSize,0,$this->fontFile,$this->waterStr);    $w = abs($rect[2]-$rect[6]);    $h = abs($rect[3]-$rect[7]);    $fontHeight = $this->fontSize;    $this->water_im = imagecreatetruecolor($w, $h);    imagealphablending($this->water_im,false);    imagesavealpha($this->water_im,true);    $white_alpha = imagecolorallocatealpha($this->water_im,255,255,255,127);    imagefill($this->water_im,0,0,$white_alpha);    $color = imagecolorallocate($this->water_im,$this->fontColor[0],$this->fontColor[1],$this->fontColor[2]);    imagettftext($this->water_im,$this->fontSize,0,0,$this->fontSize,$color,$this->fontFile,$this->waterStr);    $this->waterImg_info = array(0=>$w,1=>$h);    $this->waterimg($type='waterstr');  }  /**   * 绘制矩形区   * bool imagefilledrectangle ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $color )   * bool imagerectangle ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $col )   * @author liuzp111   */  public function drawRectangle()  {    //imagefill($im,0,0,$gray);//填充资源，填充的坐标（类似PS魔棒），颜色    /*     *  1--------------画长方形--------------     *  bool imagerectangle ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $col )     *  参数: 画布资源, 左上角x坐标,左上y坐标,右下x坐标,右下y坐标,颜色     */    $color = imagecolorallocate($this->im,255,255,255);//创建矩形边框颜色和填充颜色    //=========================================================================    //绘制矩形区域并填充    // 参数说明：    //bool imagefilledrectangle ( resource $image , int $x1 , int $y1 , int $x2 , int $y2 , int $color )    // im:为将图像载入为图像资源    // $x1:表示矩形左上角的X坐标    // $y1:表示矩形左上角的Y坐标    // $x2:表示矩形右下角的X坐标    // $y2:表示矩形右下角的Y坐标    // $color:为填充的RGB颜色    //    imagefilledrectangle($this->im,3,$this->srcImg_info[1] - 20,$this->srcImg_info[0]-3,$this->srcImg_info[1]-3,$color);    //不要使用下方的函数填充，下方填充函数为魔棒填充，容易导致填充不完整    //imagefill($this->im,$this->srcImg_info[0]/2,$this->srcImg_info[1]-8,$color);//填充资源，填充的坐标（魔棒），颜色  }  function output() {    $this->imginfo();    //是否创建矩形区域    if($this->is_draw_rectangle){      $this->drawRectangle();    }    if ($this->waterTypeStr ) {      $this->waterstr();    }     if($this->waterTypeImage )    {      $this->waterimginfo();      $this->waterimg();    }    switch ($this->srcImg_info[2]) {      case 3:        $res_output = imagepng($this->im,$this->output_img);        break 1;      case 2:        $res_output = imagejpeg($this->im,$this->output_img);        break 1;      case 1:        $res_output = imagegif($this->im,$this->output_img);        break 1;      default:        // die('添加水印失败！');        return array('data'=>'','info'=>'添加水印失败!','status'=>0);        break;    }    imagedestroy($this->im);    imagedestroy($this->water_im);    return array('data'=>$res_output,'info'=>'添加水印成功!','status'=>1);  }}

$file = '58368dddc8c51_22';//需要加水印的图片$file_ext = '.jpeg';//扩展名$imgFileName = './'.$file.$file_ext;//需要加水印图片路径$obj = new WaterMask($imgFileName); //实例化对象$obj->waterTypeStr = true;     //开启文字水印      $obj->waterTypeImage = true;    //开启图片水印  $obj->pos = 9;         //定义水印图片位置 $obj->waterImg = './water.png';      //水印图片     $obj->transparent = 100;          //水印透明度$obj->waterStr = '保险经纪人：刘测试 电话：02052552';       //水印文字$obj->fontSize = 9;            //文字字体大小$obj->fontColor = array(0,0,0);        //水印文字颜色（RGB）$obj->fontFile = './font/msyh.ttc';    //字体文件，这里是微软雅黑$obj->is_draw_rectangle = TRUE;      //开启绘制矩形区域$obj ->output_img = './'.$file.'_n'.$file_ext;//输出的图片路径$obj->output();