Home php教程 php手册 php图片上传类,支持加水印,生成略缩图

php图片上传类,支持加水印,生成略缩图

Jun 13, 2016 am 11:26 AM
php upload share add picture support watermark generate kind netizen

分享一个网友写的php图片上传类,支持加水印,生成略缩图功能哦,面是配置和可以获取的一些信息(每一个配置信息都有默认值,如无特殊需要,可以不配置):

 代码如下 复制代码

/*----------------------------------------------------------------------------------
 *
 *----------------------------------------------------------------------------------
 */
class image_up{
 //定义基本参数
 private $uptype=array('image/jpg','image/jpeg','image/png','image/pjpeg','image/gif','image/bmp','image/x-png');  //上传文件类型
 private $max_file_size=102400;    //上传大小限制(单位:KB)
 private $destination_folder="up/"; //上传文件路径
 private $watermark=1;              //是否附加水印
 private $watertype=1;              //水印类型(1为文字,2为图片)
 private $waterposition=1;          //水印位置(1为左下角,2为右下角,3为左上角,4为右上角,5为居中);
 private $waterstring=null;         //水印字符串
 private $waterimg=null;            //水印图片
 private $imgpreview=1;             //是否生成预览图(1为生成,其他为不生成);
 private $imgpreviewsize=1;         //预览图比例,0为按固定宽和高显示,其他为比例显示
 private $imgwidth=200;             //预览图固定宽度
 private $imgheight=200;            //预览图固定高度
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 private $imgthu=1;                     //是否生成且保存略缩图,1为生成,0为不生成
 private $imgthu_folder=null;           //略缩图保存路径,默认与文件路径一致
 private $imgthu_fixed=0;               //略缩图是否使用固定宽高,1为使用,0为灵活变动
 private $imgthu_width=200;             //略缩图宽度
 private $imgthu_height=200;            //略缩图高度
 
 private $imgthu_name=null;             //略缩图名称
 //******************************************************************************************************************
 private $inputname="upfile";       //文件上传框名称
 //******************************************************************************************************************
 private $img_preview_display;      //图片预览图显示
 //******************************************************************************************************************
 //文件上传相关信息,1为文件不存在,2为类型不符合,3为超出大小限制,4为上传失败,0为上传成功
 private $file_up_info=null;
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 //可在外部获取上传文件基本信息
 private $file_name;         //客服端文件的原名称
 private $file_type;         //文件的MIME类型
 private $file_size;         //已上传文件的大小,单位/字节
 private $file_tmp_name;     //储存的临时文件名
 private $file_error;        //该文件上传相关错误代码

 private $img_size;          //取得图片的长宽
 private $file_basename;     //获取带扩展名的全名
 private $file_extension;    //获取文件扩展名
 private $filename;          //文件名(不带扩展名)
 private $destination;       //问价路径加名称
 //******************************************************************************************************************
 public function __set($propety_name,$value){
  $this->$propety_name=$value;
 }
 public function __get($property_name){
  if(isset($this->$property_name))
  return($this->$property_name);
  else return(NULL);
 }
 //******************************************************************************************************************
 //定义文件上传功能
 public function up(){
  //判断文件是否存在
  if(!is_uploaded_file($_FILES[$this->inputname]["tmp_name"])){
   $this->file_up_info=1;
   return;
  }
  //获取并赋值相应基本参数
  $upfile=$_FILES[$this->inputname];
  $this->file_name=$upfile["name"];
  $this->file_type=$upfile["type"];
  $this->file_size=$upfile["size"];
  $this->file_tmp_name=$upfile["tmp_name"];
  $this->file_error=$upfile["error"];
  //检查文件类型是否符合
  if(!in_array($this->file_type,$this->uptype)){
   $this->file_up_info=2;
   return;
  }
  //检查文件大小是否超出限制
  if($this->file_size>$this->max_file_size){
   $this->file_up_info=3;
   return;
  }
  //判断目录是否存在
  if(!file_exists($this->destination_folder))
  mkdir($this->destination_folder);
  //进一步取得图片的信息并赋值
  $this->img_size=getimagesize($this->file_tmp_name);
  $pathinfo=pathinfo($this->file_name);
  $this->file_extension=$pathinfo["extension"];    //获取文件扩展名
  $this->file_basename=$pathinfo["basename"];      //获取带扩展名的全名
  $this->filename=$pathinfo["filename"];           //文件名(不带扩展名)
  $filename2=$pathinfo['filename'];
  $this->destination = $this->destination_folder.$this->filename.".".$this->file_extension;
  //判断文件名是否存在,如果存在则重命名
  $n=1;
  while (file_exists($this->destination)){
   while (file_exists($this->destination)){
    $n++;
    $this->filename=$this->filename."(".$n.")";
    $this->destination = $this->destination_folder.$this->filename.".".$this->file_extension;
   }
   $this->filename=$filename2."(".$n.")";
   $this->destination = $this->destination_folder.$this->filename.".".$this->file_extension;
  }
  //移动上传的文件
  if(move_uploaded_file($this->file_tmp_name,$this->destination))
  $this->file_up_info=0;
  else $this->file_up_info=4;
   
  //添加水印
  if($this->watermark==1){
   $this->imgthu();
  }
  //生成略缩图
  if($this->imgthu==1){
   $this->add_watermark();
  }
  //生成预览图
  if($this->imgpreviewsize == 0){
   if($this->img_size["0"]imgwidth) $this->imgwidth=$this->img_size["0"];
   if($this->img_size["1"]imgheight) $this->imgheight=$this->img_size["1"];
  }else{
   $this->imgwidth=$this->img_size["0"]*$this->imgpreviewsize;
   $this->imgheight=$this->img_size["1"]*$this->imgpreviewsize;
  }
  $this->img_preview_display="php图片上传类,支持加水印,生成略缩图                                    alt="图片预览:r文件名":$this->file_tmp_name />";
 }
//====================================================================================================================
//==================================================================================================================== 
 //生成略缩图功能
 function imgthu(){
  if($this->imgthu_folder==null)
    $this->imgthu_folder=$this->destination_folder;
  
  //$this->imgthu_name=$this->filename."_t.".$this->file_extension;
  $imgthu_name_b=$this->filename."_t";
  $imgthu_name_b2=$this->filename."_t";
  $destination_b=$this->imgthu_folder.$imgthu_name_b.".".$this->file_extension;
     //判断文件名是否存在,如果存在则重命名
  $n=1;
  while (file_exists($destination_b)){
   while (file_exists($destination_b)){
    $n++;
    $imgthu_name_b=$imgthu_name_b."(".$n.")";
    $destination_b = $this->imgthu_folder.$imgthu_name_b.".".$this->file_extension;
   }
   $imgthu_name_b=$imgthu_name_b2."(".$n.")";
   $destination_b = $this->imgthu_folder.$imgthu_name_b.".".$this->file_extension;
  }
  
  
  $imginfo=getimagesize($this->destination);
  switch($imginfo[2])
  {
   case 1:
    $in=@imagecreatefromgif($this->destination);
    break;
   case 2:
    $in=@imagecreatefromjpeg($this->destination);
    break;
   case 3:
    $in=@imagecreatefrompng($this->destination);
    break;
   case 6:
    $in =@imagecreatefrombmp($this->destination);
    break;
   default:
    break;
  }
  //计算略缩图长宽
  if($this->imgthu_fixed==0){
   if($this->imgthu_height>($imginfo[1]/$imginfo[0])*$this->imgthu_width)
    $this->imgthu_width = ($imginfo[0]/$imginfo[1])*$this->imgthu_height;
   else
    $this->imgthu_height=($imginfo[1]/$imginfo[0])*$this->imgthu_width;
  }
  $new = imageCreateTrueColor($this->imgthu_width,$this->imgthu_height);
  ImageCopyResized($new,$in,0,0,0,0,$this->imgthu_width,$this->imgthu_height,$imginfo[0],$imginfo[1]);
  switch ($imginfo[2])
  {
   case 1:
    imagejpeg($new,$destination_b);
    break;
   case 2:
    imagejpeg($new,$destination_b);
    break;
   case 3:
    imagepng($new,$destination_b);
    break;
   case 6:
    imagewbmp($new,$destination_b);
    break;
  }
 }
//====================================================================================================================
//==================================================================================================================== 
 //添加水印功能
 function add_watermark(){
  //1 = GIF,2 = JPG,3 = PNG,4 = SWF,5 = PSD,6 = BMP,7 = TIFF(intel byte order),
  //8 = TIFF(motorola byte order),9 = JPC,10 = JP2,11 = JPX,12 = JB2,13 = SWC,14 = IFF,15 = WBMP,16 = XBM。
  $imginfo=getimagesize($this->destination);
  $im=imagecreatetruecolor($this->img_size[0],$this->img_size[1]);       //创建真彩色
  $white=imagecolorallocate($im,255,255,255);                            //设置颜色
  $black=imagecolorallocate($im,0,0,0);
  $red=imagecolorallocate($im,255,0,0);
  //在 image 图像的坐标 x,y(图像左上角为 0, 0)处用 color 颜色执行区域填充(即与 x, y 点颜色相同且相邻的点都会被填充)。
  imagefill($im,0,0,$white);

  switch($imginfo[2])
  {
   case 1:
    $simage =imagecreatefromgif($this->destination);      // 创建一个新的形象,从文件或 URL
    break;
   case 2:
    $simage =imagecreatefromjpeg($this->destination);
    break;
   case 3:
    $simage =imagecreatefrompng($this->destination);
    break;
   case 6:
    $simage =imagecreatefromwbmp($this->destination);
    break;
   default:
    echo ("不支持的文件类型");
    break;
  }
  if(!empty($simage))
  {
   //位置设置
   if($this->watertype==1){
    $str_len=strlen($this->waterstring);
       $str_width=$str_len*10;
       $str_height=20;
   }elseif($this->watertype==1 && file_exists($this->waterimg)){
    $iinfo=getimagesize($this->waterimg);
    $str_width = $iinfo[0];
    $str_height = $iinfo[1];
   }
   
   switch ($this->waterposition){
    case 1:
     $p_x=5;
     $p_y=$this->img_size[1]-$str_height;
     break;
    case 2:
     $p_x=$this->img_size[0]-$str_width;
     $p_y=$this->img_size[1]-$str_height;
     break;
    case 3:
     $p_x=5;
     $p_y=0;
     break;
    case 4:
     $p_x=$this->img_size[0]-$str_width;
     $p_y=5;
     break;
    case 5:
     $p_x=($this->img_size[0]-$str_width)/2;
     $p_y=($this->img_size[1]-$str_height)/2;
     break;
   }
   imagecopy($im,$simage,0,0,0,0,$this->img_size[0],$this->img_size[1]);   //拷贝图像的一部分
   //imagefilledrectangle($im,1,$this->img_size[1]-15,130,$this->img_size[1],$white);  //将图片的封闭长方形区域着色

   switch($this->watertype)
   {
    case 1:   //加水印字符串
     imagestring($im,10,$p_x,$p_y,$this->waterstring,$red);
     break;
    case 2:   //加水印图片
     $simage1 =imagecreatefromgif($this->waterimg);
     imagecopy($im,$simage1,0,0,0,0,85,15);
     imagedestroy($simage1);
     break;
   }

   switch ($imginfo[2])
   {
    case 1:
     //imagegif($nimage, $destination);
     imagejpeg($im, $this->destination);
     break;
    case 2:
     imagejpeg($im, $this->destination);
     break;
    case 3:
     imagepng($im, $this->destination);
     break;
    case 6:
     imagewbmp($im, $this->destination);
     break;
   }
   //覆盖原上传文件
   imagedestroy($im);
   imagedestroy($simage);
  }
 }
}
?>


Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

To work on file upload we are going to use the form helper. Here, is an example for file upload.

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

In this chapter, we are going to learn the following topics related to routing ?

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

CakePHP Creating Validators CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM

Validator can be created by adding the following two lines in the controller.

See all articles