本篇文章主要介绍PHP实现水印类,支持添加图片、文字、填充颜色区域，感兴趣的朋友参考下，希望对大家有所帮助。

*自己整理的一个水印类*

支持添加图片、文字、填充颜色区域

/**

* 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);

}

}

使用方式：

$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();

以上就是本文的全部内容，希望对大家的学习有所帮助。

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