一共有3个文件:
1、functions.PHP
2、water.config.PHP
3、water.class.PHP
代码如下:
functions.PHP
<?PHP
/*
*
*/
//获得数据库模型的对象
function M($table){
return new Model($table);
}
//打印信息
function p($msg){
echo "<pre>";
print_r($msg);
echo "</pre>";
}
//提示错误信息
function error($msg){
echo "<div align='center' style='border:solid 3px #dcdcdc;padding:20px;margin:0 auto;'>
$msg
</div>";
exit;
}
//自动加载类文件
function __autoload($className){
if(strlen($className)>7 && substr($className,-7) == 'Control'){
$classFile = PATH_APP.'/control/'.$className.'.PHP';
}else{
$classFile = PATH_XL.'/libs/bin/'.$className.'.class.PHP';
}
if(!is_file($classFile)){
exit($classFile."文件不存在");
}
include $classFile;
}
//加载、设置配置项
function C($name=null,$value=null){
static $config =array();
if(is_array($name)){
$config = array_merge($config,array_change_key_case($name));
}
if(is_string($name)){
$name = strtolower($name);
if(!is_null($value)){
$congfig[$name]=$value;
return true;
}
return isset($config[$name])?$config[$name]:null;
}
if(is_null($name)){
return $config;
}
}
//加载、设置字体
function L($name=null,$value=null){
static $lang = array();
if(is_array($name)){
$lang = array_merge($lang,array_change_key_case($name));
}
if(is_string($name)){
$name = strtolower($name);
if(!is_null($value)){
$lang[$name]=$value;
return true;
}
return isset($lang[$name])?$lang[$name]:null;
}
if(is_null($name)){
return $lang;
}
}
//获得文件、文件夹的大小
function getsize($path,$type=null){
if(is_file($path)) return filesize($path);
$type = is_null($type)?"*":"*.$type";
$files = glob($path.'/'.$type);
$size = 0;
foreach($files as $f){
$size+=is_dir($f)?getsize($f):filesize($f);
}
return $size;
}
?>
water.config.PHP
<?PHP
return array(
//水印处理配置项
'water_img' => 'water.jpg',//水印图片
'water_pos' => '9',//水印位置 取值范围:1-9
/* 1-9的位置分别为
↖ ↑ ↗
← · →
↙ ↓ ↘
*/
'water_pct' => 60,//水印透明度 取值范围:0-100 (值越大、水印越清晰)
);
?>
water.class.PHP
<?PHP
include "functions.PHP";//加载小工具函数
C(include "water.config.PHP");//读取水印类配置项
//水印处理类
class waterd{
public $water_pos='';//水印位置
public $water_pct='';//水印透明度
private $res;//图像资源
//构造函数
function __construct($pos=null,$pct=null){
$this->water_pos = is_null($pos)?C('water_pos'):$pos;
$this->water_pct = is_null($pct)?C('water_pct'):$pct;
}
//添加水印方法
public function water($img){
//检测
if(!$this->check($img)){
return false;
}
//水印图片资源
$water_res = $this -> getres(C('water_img'));
//原始图片资源
$img_res = $this -> getres($img);
//水印位置
$posArr = $this -> getpos($img_res,$water_res);
imagecopymerge($img_res,$water_res,$posArr[0],$posArr[1],imagesx($water_res),imagesy($water_res),$this->water_pct);
$info = getimagesize($img);
//打印图片信息 测试时可开启当前打印 p($info);
$func = str_replace('/','',$info['mime']);
$func($img_res,$img);
}
//检测
private function check($img){
return is_file($img) && extension_loaded('GD') && getimagesize($img);
}
//获得图片资源
private function getres($img){
$info = getimagesize($img);
$type = trim(image_type_to_extension($info[2]),'.');
$func = 'imagecreatefrom'.$type;
return $func($img);
}
//获得水印位置
private function getpos($img_res,$water_res){
$img_x = imagesx($img_res);//原图宽度
$img_y = imagesy($img_res);//原图宽度
$water_x = imagesx($water_res);//水印宽度
$water_y = imagesy($water_res);//水印宽度
$pos = $this -> water_pos;//水印位置
$x=15;$y=15;
switch($pos){
case 1:
break;
case 2:
$x = ($img_x-$water_x)/2;
break;
case 3:
$x = $img_x-$water_x-15;
break;
case 4:
$y = ($img_y-$water_y)/2;
break;
case 5:
$x = ($img_x-$water_x)/2;
$y = ($img_y-$water_y)/2;
break;
case 6:
$x = $img_x-$water_x-15;
$y = ($img_y-$water_y)/2;
break;
case 7:
$y = $img_y-$water_y-15;
break;
case 8:
$x = ($img_x-$water_x)/2;
$y = $img_y-$water_y-15;
break;
case 9:
$x = $img_x-$water_x-15;
$y = $img_y-$water_y-15;
break;
}
return array($x,$y);
}
}
//new一个对象然后 调用 水印的方法 water()即可、传进要添加水印的图片即可
$x = new waterd();
$x->water('img.jpg');
?>