php图片上传类,支持加水印,生成略缩图
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,里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,PHP类代码如下:
- <?php
-
-
-
-
- class image_up{
-
- private $uptype=array('image/jpg','image/jpeg','image/png','image/pjpeg','image/gif','image/bmp','image/x-png');
- private $max_file_size=102400;
- private $destination_folder="up/";
- private $watermark=1;
- private $watertype=1;
- private $waterposition=1;
- private $waterstring=null;
- private $waterimg=null;
- private $imgpreview=1;
- private $imgpreviewsize=1;
- private $imgwidth=200;
- private $imgheight=200;
-
- private $imgthu=1;
- private $imgthu_folder=null;
- private $imgthu_fixed=0;
- private $imgthu_width=200;
- private $imgthu_height=200;
-
- private $imgthu_name=null;
-
- private $inputname="upfile";
-
- private $img_preview_display;
-
-
- private $file_up_info=null;
-
-
- private $file_name;
- private $file_type;
- private $file_size;
- private $file_tmp_name;
- private $file_error;
-
- private $img_size;
- private $file_basename;
- private $file_extension;
- private $filename;
- private $destination;
-
- public function __set($propety_name,$value){
- $this->$propety_name=$value;
- }
- public function __get($property_name){
- if(isset($this->$property_name))
- return($this->$property_name);
- else return(NULL);
- }
-
-
- public function up(){
-
- if(!is_uploaded_file($_FILES[$this->inputname]["tmp_name"])){
- $this->file_up_info=1;
- return;
- }
-
- $upfile=$_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"];
-
- if(!in_array($this->file_type,$this->uptype)){
- $this->file_up_info=2;
- return;
- }
-
- if($this->file_size>$this->max_file_size){
- $this->file_up_info=3;
- return;
- }
-
- if(!file_exists($this->destination_folder))
- mkdir($this->destination_folder);
-
- $this->img_size=getimagesize($this->file_tmp_name);
- $pathinfo=pathinfo($this->file_name);
- $this->file_extension=$pathinfo["extension"];
- $this->file_basename=$pathinfo["basename"];
- $this->filename=$pathinfo["filename"];
- $filename2=$pathinfo['filename'];
- $this->destination = $this->destination_folder.$this->filename.".".$this->file_extension;
-
- $n=1;
- while (file_exists($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.".".$this->file_extension;
- }
-
- if(move_uploaded_file($this->file_tmp_name,$this->destination))
- $this->file_up_info=0;
- else $this->file_up_info=4;
-
-
- if($this->watermark==1){
- $this->imgthu();
- }
-
- if($this->imgthu==1){
- $this->add_watermark();
- }
-
- if($this->imgpreviewsize == 0){
- if($this->img_size["0"]<$this->imgwidth) $this->imgwidth=$this->img_size["0"];
- if($this->img_size["1"]<$this->imgheight) $this->imgheight=$this->img_size["1"];
- }else{
- $this->imgwidth=$this->img_size["0"]*$this->imgpreviewsize;
- $this->imgheight=$this->img_size["1"]*$this->imgpreviewsize;
- }
- $this->img_preview_display="<img src='$this->destination' width='$this->imgwidth' height='$this->imgheight'
- alt='图片预览:r文件名':$this->file_tmp_name />";
- }
-
-
-
- function imgthu(){
- if($this->imgthu_folder==null)
- $this->imgthu_folder=$this->destination_folder;
-
-
- $imgthu_name_b=$this->filename."_t";
- $imgthu_name_b2=$this->filename."_t";
- $destination_b=$this->imgthu_folder.$imgthu_name_b.".".$this->file_extension;
-
- $n=1;
- while (file_exists($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;
- }
-
- 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;
- }
- }
-
-
-
- function add_watermark(){
-
-
- $imginfo=getimagesize($this->destination);
- $im=imagecreatetruecolor($this->img_size[0],$this->img_size[1]);
- $white=imagecolorallocate($im,255,255,255);
- $black=imagecolorallocate($im,0,0,0);
- $red=imagecolorallocate($im,255,0,0);
-
- imagefill($im,0,0,$white);
-
- switch($imginfo[2])
- {
- case 1:
- $simage =imagecreatefromgif($this->destination);
- 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(!emptyempty($simage))
- {
-
- if($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],$this->img_size[1]);
-
-
- switch($this->watertype)
- {
- case 1:
- imagestring($im,10,$p_x,$p_y,$this->waterstring,$red);
- break;
- case 2:
- $simage1 =imagecreatefromgif($this->waterimg);
- imagecopy($im,$simage1,0,0,0,0,85,15);
- imagedestroy($simage1);
- break;
- }
-
- switch ($imginfo[2])
- {
- case 1:
-
- imagejpeg($im, $this->destination);
- break;
- case 2:
- imagejpeg($im, $this->destination);
- break;
- case 3:
- imagepng($im, $this->destination);
- break;
- case 6:
- imagewbmp($im, $this->destination);
- break;
- }
-
- imagedestroy($im);
- imagedestroy($simage);
- }
- }
- }
- ?>
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