/*PHP圖片加文字浮水印類庫
該類庫暫時只支援文字浮水印，位置為右下角，顏色隨機
調用方法：
1、在需要加浮水印的檔案頂部引入類庫：
include_once 'imageClass.php';
2、聲明新類：
$tpl=new image_fu;
3、給圖片浮水印提供參數：
$tpl->img(圖片路徑,浮水印文字,字型路徑,字型大小,字型角度);
比如：$tpl->img('abc.jpg','這是浮水印文字','ziti.ttf',30,0)
*/ 代碼如下： watermark.php
<?php
class image_fu{ private $image;
private $img_info;
private $img_width;
private $img_height;
private $img_im;
private $img_text;
private $img_ttf='';
private $img_new;
private $img_text_size;
private $img_jd; function img($img='',$txt='',$ttf='',$size=12,$jiaodu=0){
if(isset($img)&&file_exists($img)){//檢測圖片是否存在
$this->image =$img;
$this->img_text=$txt;
$this->img_text_size=$size;
$this->img_jd=$jiaodu;
if(file_exists($ttf)){
$this->img_ttf=$ttf;
}else{
exit('字型檔：'.$ttf.'不存在！');
}
$this->imgyesno();
}else{
exit('圖片檔案:'.$img.'不存在');
}
} private function imgyesno(){ $this->img_info =getimagesize($this->image);
$this->img_width =$this->img_info[0];//圖片寬
$this->img_height=$this->img_info[1];//圖片高 //檢測圖片類型
switch($this->img_info[2]){
case 1:$this->img_im = imagecreatefromgif($this->image);break;
case 2:$this->img_im = imagecreatefromjpeg($this->image);break;
case 3:$this->img_im = imagecreatefrompng($this->image);break;
default:exit('圖片格式不支援浮水印');
} $this->img_text();
} private function img_text(){ imagealphablending($this->img_im,true); //設定顏色
$color=imagecolorallocate($this->img_im,rand(0,255),rand(0,255),rand(0,255));
$txt_height=$this->img_text_size;
$txt_jiaodu=$this->img_jd;
$ttf_im=imagettfbbox($txt_height,$txt_jiaodu,$this->img_ttf,$this->img_text);
$w = $ttf_im[2] - $ttf_im[6];
$h = $ttf_im[3] - $ttf_im[7];
//$w = $ttf_im[7];
//$h = $ttf_im[8]; unset($ttf_im); $txt_y =$this->img_height-$h;
$txt_x =$this->img_width-$w;
//$txt_y =0;
//$txt_x =0; $this->img_new=@imagettftext($this->img_im,$txt_height,$txt_jiaodu,$txt_x,$txt_y,$color, $this->img_ttf,$this->img_text); @unlink($this->image);//刪除圖片
switch($this->img_info[2]) {//取得背景圖片的格式
case 1:imagegif($this->img_im,$this->image);break;
case 2:imagejpeg($this->img_im,$this->image);break;
case 3:imagepng($this->img_im,$this->image);break;
default: exit('浮水印圖片失敗');
} } //顯示圖片
function img_show(){echo '<img src="'.$this->image.'" border="0" alt="'.$this->img_text.'" />';} //釋放記憶體
private function img_nothing(){
unset($this->img_info);
imagedestroy($this->img_im);
} } $addwk = new image_fu();
$addwk->img('2.jpg','testwatermark','華康少女字型.ttf',33,0);
$addwk->img_show(); //調用顯示圖片 ?> |
