PHP image upload code (with the function of generating thumbnails and adding watermarks)_PHP tutorial

This image upload source code can upload images and also has the function of generating thumbnails and adding watermarks to uploaded images. It can be said to be a perfect image uploader.

php tutorial image upload code (with the function of generating thumbnails and adding watermarks)
This image upload source code can upload images and also has the function of generating thumbnails and adding watermarks to uploaded images. It can be said to be a perfect image uploader.

class upfile {
public $filepath = "www.bKjia.c0m/"; //Folder to store uploaded files

public $filesize = 1000000; //Allow upload size

//If you want to modify the types of files allowed to be uploaded, please search [ switch ($upfiletype) { //File type ]

public $reimagesize = array (
true, //Whether to generate thumbnails
400, //Thumbnail width
300,//Thumbnail height
"" //Thumbnail storage folder. If empty, it is in the same directory as the current file to generate thumbnails. The file prefix is ​​r_
); //Whether to generate thumbnail array (generate or not, thumbnail width, thumbnail height, storage folder); Note: the storage folder is followed by '/'

public $india = true; //Whether to watermark true or false

public $indiaimage = ""; //If the watermark image address is empty, the image watermark will not be printed. If there is a text watermark, it is recommended not to enable the image watermark

public $indiaimagex = 100; //The distance between the image and the left side of the image

public $indiaimagey = 10; //The distance between the picture and the top of the picture

public $indiatext = "www.bKjia.c0m"; //Watermark text

public $fontsize = 6; //Watermark text size, 1 minimum and 6 maximum

public $indiatextx = 10; //The distance between the text and the left side of the image

public $indiatexty = 10; //The distance between the text and the top of the picture

public $r = 250; //Three primary colors of picture color $r red

public $g = 250; //$g green

public $b = 250; //$bblue

public $indiapath = ""; //The watermarked picture saving path, if it is empty, it will directly replace the original picture

 //开始上传处理
 function uploadfile($upfile) {
  if ($upfile == "") {
   die("uploadfile:参数不足");
  }
  if (!file_exists($this->filepath)) {
   mkdir($this->filepath);
  }
  $upfiletype = $upfile['type'];
  $upfilesize = $upfile['size'];
  $upfiletmpname = $upfile['tmp_name'];
  $upfilename = $upfile['name'];
  $upfileerror = $upfile['error'];
  if ($upfilesize > $this->filesize) {
   return false; //文件过大
  }
  switch ($upfiletype) { //文件类型
   case 'image/jpeg' :
    $type = 'jpg';
    break;
   case 'image/pjpeg' :
    $type = 'jpg';
    break;
   case 'image/png' :
    $type = 'png';
    break;
   case 'image/gif' :
    $type = 'gif';
    break;
  }
  if (!isset ($type)) {
   return false; //不支持此类型
  }
  if (!is_uploaded_file($upfiletmpname) or !is_file($upfiletmpname)) {
   return false;
   ; //文件不是经过正规上传的;
  }
  if ($this->upfileerror != 0) {
   return false; //其他错误
  }
  if ($this->upfileerror == 0) {
   if (!file_exists($upfiletmpname)) {
    return false; //临时文件不存在
   } else {
    $filename = date("ymdhis", time() + 3600 * 8); //图片已当前时间命名
    $filename = $this->filepath . $filename . "." . $type;
    if (!move_uploaded_file($upfiletmpname, $filename)) {
     return false; //文件在移动中丢失
    } else {
     if ($this->india == true) {
      $this->goindia($filename, $type,true);
     } else {
      if ($this->reimagesize[0] == true) {
       $this->goreimagesize($filename, $type);
      } else {
       return true; //上传成功!
       unlink($upfiletmpname);
      }
     }
    }

   }
  }

}
//Add watermark processing
function goindia($filename, $filetype,$reimage=false) {
if (!file_exists($filename)) {
$this->reerror(7); //The file to be watermarked does not exist
} else {
if ($filetype == "jpg") {
$im = imagecreatefromjpeg($filename);
} else
if ($filetype == "gif") {
       $im = imagecreatefromgif($filename);
} else
If ($filetype == "png") {
        $im = imagecreatefrompng($filename);
}
If ($this->indiatext != "") { //If the watermark text is not empty
$textcolor = imagecolorallocate($im, $this->r, $this->g, $this->b); //Set text color
Imagestring($im, $this->fontsize, $this->indiatextx, $this->indiatexty, $this->indiatext, $textcolor); //Write text into the image
}
if ($this->indiaimage != "") {//If the watermark image is not empty
$indiaimagetype = getimagesize($this->indiaimage);
$logow = $indiaimagetype[0]; //Get the width of the watermark image
$logoh = $indiaimagetype[1]; //Get the height of the watermark image
Switch ($indiaimagetype[2]) { //Determine the format of the watermark image
case 1 :
       $indiaimagetype = "gif";
$logo = imagecreatefromgif($this->indiaimage);
        break;
Case 2:
       $indiaimagetype = "jpg";
$logo = imagecreatefromjpeg($this->indiaimage);
        break;
Case 3:
       $indiaimagetype = "png";
$logo = imagecreatefrompng($this->indiaimage);
        break;
}
Imagealphablending($im, true); //Turn on color blending mode
Imagecopy($im, $logo, $this->indiaimagex, $this->indiaimagey, 0, 0, $logow, $logoh);
Imagedestroy($im);
Imagedestroy($logo);
}
}
if ($this->indiapath == "") { //If the watermark storage address is not empty
if ($filetype == "jpg") {
Imagejpeg($im, $filename);
} else
if ($filetype == "gif") {
Imagegif($im, $filename);
} else
If ($filetype == "png") {
Imagepng($im, $filename);
}
if($reimage == true){
$this->goreimagesize($filename,$filetype);
}else{
Return true; //Watermark added successfully
}
} else {
if (!file_exists($this->indiapath)) {
mkdir($this->indiapath);
Return false; //Please re-upload
} else {
$indianame = basename($filename);
$indianame = $this->indiapath . $indianame;
If ($filetype == "jpg") {
Imagejpeg($im, $indianame);
} else
If ($filetype == "gif") {
Imagegif($im, $indianame);
} else
If ($filetype == "png") {
Imagepng($im, $indianame);
}
If($reimage == true){
$this->goreimagesize($indianame,$filetype);
echo $indianame;
}else{
Return true; //Watermark added successfully
}
}
}
}
function goreimagesize($filename, $filetype) {
if (!file_exists($filename)) {
Return false; //The picture to be generated as a thumbnail does not exist
} else {
if ($filetype == 'jpg') {
$reimage = imagecreatefromjpeg($filename);
}
elseif ($filetype == 'png') {
$reimage = imagecreatefrompng($filename);
} else
if ($filetype == 'gif') {
$reimage = imagecreatefromgif($filename);
}
if (isset ($reimage)) {
$srcimagetype = getimagesize($filename);
$srcimagetypew = $srcimagetype[0]; //Get the original image width
$srcimagetypeh = $srcimagetype[1]; //Get the original image height
$reim = imagecreatetruecolor($this->reimagesize[1], $this->reimagesize[2]);
Imagecopyresized($reim, $reimage, 0, 0, 0, 0, $this->reimagesize[1], $this->reimagesize[2], $srcimagetypew, $srcimagetypeh);
$reimagepath = $this->reimagesize[3];
If ($reimagepath != "") { //If the watermark storage address is not empty
If (!file_exists($reimagepath)) {
         mkdir($reimagepath);
} else {
        $reimagename = basename($filename);
$reimagename = $reimagepath . "r_" . $reimagename;
If ($filetype == "gif")
Imagegif($reim, $reimagename);
       else
If ($filetype == "jpg")
Imagejpeg($reim, $reimagename);
       else
           if ($filetype == "png")
Imagepng($reim, $reimagename);
        return true;
}
} else {
$filename = basename($filename);
If($this->indiapath == ""){
$filename = $this->filepath."r_" . $filename;
      }else{
$filename = $this->indiapath."r_" . $filename;
}
If ($filetype == "gif")
Imagegif($reim, $filename);
      else
If ($filetype == "jpg")
Imagejpeg($reim, $filename);
       else
If ($filetype == "png")
Imagepng($reim, $filename);
Return true;
}

}
}
}

}
if ($_post["submit"]) {
$file = $_files['uploadfile'];
$upfile = new upfile();
echo $upfile->uploadfile($file);
}
?>

http://www.bkjia.com/PHPjc/633045.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/633045.htmlTechArticleThis image upload source code is a tool that can upload images and also has the ability to generate thumbnails and add images to uploaded images. With the watermark function, it can be said to be a perfect image uploader. PHP teaching...