php编写功能强大上传图片的类_PHP教程

php class upphoto{public $previewsize=0.125  ;   //预览图片比例public $preview=0;   //是否生成预览，是为1，否为0 public $datetime;   //随机数public $ph_name;   //上传图片文件名public $ph_tmp_name;    //图片临时文件名public $ph_path="../userimg/";    //上传文件存放路径public $ph_type;   //图片类型public $ph_size;   //图片大小public $imgsize;   //上传图片尺寸，用于判断显示比例public $al_ph_type=array(image/jpg,image/jpeg,image/png,image/pjpeg,image/gif,image/bmp,image/x-png);    //允许上传图片类型public $al_ph_size=1000000;   //允许上传文件大小function __construct(){$this->set_datatime();}function set_datatime(){$this->datetime=date("YmdHis");}//获取文件类型function get_ph_type($phtype){$this->ph_type=$phtype;}//获取文件大小function get_ph_size($phsize){$this->ph_size=$phsize."";}//获取上传临时文件名function get_ph_tmpname($tmp_name){$this->ph_tmp_name=$tmp_name;$this->imgsize=getimagesize($tmp_name);}//获取原文件名function get_ph_name($phname){$this->ph_name=$this->ph_path.$this->datetime.strrchr($phname,"."); //strrchr获取文件的点最后一次出现的位置//$this->ph_name=$this->datetime.strrchr($phname,"."); //strrchr获取文件的点最后一次出现的位置return $this->ph_name;}// 判断上传文件存放目录function check_path(){if(!file_exists($this->ph_path)){mkdir($this->ph_path);}}//判断上传文件是否超过允许大小function check_size(){if($this->ph_size>$this->al_ph_size){$this->showerror("上传图片超过2000KB");}}//判断文件类型function check_type(){if(!in_array($this->ph_type,$this->al_ph_type)){$this->showerror("上传图片类型错误");}}//上传图片function up_photo(){if(!move_uploaded_file($this->ph_tmp_name,$this->ph_name)){$this->showerror("上传文件出错");}}//图片预览function showphoto(){if($this->preview==1){if($this->imgsize[0]>2000){$this->imgsize[0]=$this->imgsize[0]*$this->previewsize;$this->imgsize[1]=$this->imgsize[1]*$this->previewsize;}echo("");}}//错误提示function showerror($errorstr){echo "";exit();}function save(){$this->check_path();$this->check_size();$this->check_type();$this->up_photo();$this->showphoto();}}?>http://www.bkjia.com/PHPjc/486216.html www.bkjia.com true http://www.bkjia.com/PHPjc/486216.html TechArticle?php class upphoto{ public $previewsize=0.125 ; //预览图片比例 public $preview=0; //是否生成预览，是为1，否为0 public $datetime; //随机数 public $ph_name; //上传...