#1 tealin
class uploadPic{
private $FILE_NAME; //表单input type=file的name属性
private $PIC_PATH; //图片存放路径(不包括文件名)
private $PIC_NAME; //图片存放路径(包括文件名)
private $PIC_SIZE; //图片大小限制
private $TYPE; //允许的类型
private $MAX_WIDTH; //允许的最大宽度
private $MAX_HEIGHT;//允许的最大高度
private $FLAG=false;//开关
private $NOTICE_L; //提示方式左定界
private $NOTICE_R; //提示方式右定界
public function __construct($file,$path,$size,$max_width=null,$max_heigth=null,$left=null,$right=null,$type=array('gif','jpg','png')){
$this->FILE_NAME=$file;
$this->PIC_PATH=$path;
$this->PIC_SIZE=$size;
$this->TYPE=$type;
$this->MAX_WIDTH=$max_width;
$this->MAX_HEIGHT=$max_heigth;
$this->NOTICE_L=$left;
$this->NOTICE_R=$right;
$this->check();
$this->upload();
$this->resize();
}
private function check(){
if(preg_match('/^image/',$_FILES[$this->FILE_NAME]["type"])==false) echo $this->notice("非图片类型");
elseif(is_array($this->TYPE)) {
$type=$this->get_type($_FILES[$this->FILE_NAME]["tmp_name"]);
$flag=false;
foreach($this->TYPE as $x){
if($x==$type) $flag=true;
}
if(!$flag) echo $this->notice("不支持的图片类型");
elseif($_FILES[$this->FILE_NAME]["size"]>$this->PIC_SIZE) echo $this->notice("超过最大限制");
elseif($_FILES[$this->FILE_NAME]["error"]>0) echo $this->notice("上传失败");
else $this->FLAG=true;
}
else echo $this->notice("指定允许的类型应为数组形式");
}
private function upload(){
if($this->FLAG==true){
$this->__mkdirs($this->PIC_PATH);
$this->PIC_NAME=$this->PIC_PATH.'/'.$this->makename();
move_uploaded_file($_FILES[$this->FILE_NAME]["tmp_name"],$this->PIC_NAME);
}
}
private function makename(){ //生成新图片名
$type=$this->get_type($_FILES[$this->FILE_NAME]["tmp_name"]);
$pic=date("YmdHis").mt_rand().'.'.$type;
return $pic;
}
private function get_type($filename){ //获取真实类型
$type=exif_imagetype($filename);
switch($type){
case 1: $ext='gif';
break;
case 2: $ext='jpg';
break;
case 3: $ext='png';
break;
}
return $ext;
}
private function resize(){ //根据限制裁剪图片
if($this->MAX_WIDTH!=null || $this->MAX_HEIGHT!=null){
list($width,$height) = getimagesize($this->PIC_NAME);
if($this->MAX_WIDTH==null && $height>$this->MAX_HEIGHT) $scale=$height/$this->MAX_HEIGHT; //只限高
elseif($this->MAX_HEIGHT==null && $width>$this->MAX_WIDTH) $scale=$width/$this->MAX_WIDTH; //只限宽
elseif($width>$this->MAX_WIDTH || $height>$this->MAX_HEIGHT){
$scaleX=$width/$this->MAX_WIDTH;
$scaleY=$height/$this->MAX_HEIGHT;
$scale=($scaleX>$scaleY)?$scaleX:$scaleY;
}
if($scale!=null){
$new_width=$width/$scale;
$new_height=$height/$scale;
$new_image=imagecreatetruecolor($new_width,$new_height);
$type=$this->get_type($this->PIC_NAME);
if($type=='gif') $source=imagecreatefromgif($this->PIC_NAME);
if($type=='jpg') $source=imagecreatefromjpeg($this->PIC_NAME);
if($type=='png') $source=imagecreatefrompng($this->PIC_NAME);
imagecopyresampled($new_image,$source,0,0,0,0,$new_width,$new_height,$width,$height);
unlink($this->PIC_NAME);
if($type=='gif') imagegif($new_image,$this->PIC_NAME);
if($type=='jpg') imagejpeg($new_image,$this->PIC_NAME,90);
if($type=='png') imagepng($new_image,$this->PIC_NAME);
}
}
}
private function notice($msg){
if($this->NOTICE_L!=null && $this->NOTICE_R!=null) return $this->NOTICE_L.$msg.$this->NOTICE_R;
else return $msg;
}
private function __mkdirs($dir, $mode = 0777){
if (!is_dir($dir)) {
$this->__mkdirs(dirname($dir), $mode);
return @mkdir($dir,$mode);
}
return true;
}
public function __get($name){
return $this->$name;
}
}
/*
demo1:
$u=new uploadPic('pic','uploads/file',1024*1024);
demo2:
$uploadpic=new uploadPic('mypic',$path,1024*1024*2,500,null,'',array('jpg','gif'));
*/
?>还是粘上来吧，以后用的时候方便来找，qq太不方便了！
2010-11-13 19:59:17