一个php上传图片的类,带调用方法

一个php上传图片的类,带调用方法

调用方法:

<?php

header("Content-Type:text/html; charset=utf-8");

//类的实例化:

include("uppoo.php");//类的文件名是upoop.php

$up=newupphoto;

$submit=$_POST['submit'];

if($submit=="上传"){

$up->get_ph_tmpname($_FILES['photo']['tmp_name']);

$up->get_ph_type($_FILES['photo']['type']);

$up->get_ph_size($_FILES['photo']['size']);

$up->get_ph_name($_FILES['photo']['name']);

$up->save();

}

?>

//上传图片的HTML:

<form action="upphoto.php?action=act" method="post" enctype="multipart/form-data">

图片来源:<input type="file" name="photo">

<input type="submit" name="submit" value="上传">

上传类,保存文件名称为 uppoo.php:

<?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."<br>";

}

//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("<img src=\"{$this->ph_name}\" width=\"{$this->imgsize['0']}\" height=\"{$this->imgsize['1']}\">");

}

}

//错误提示

function showerror($errorstr){

echo "<script language=java script>alert('$errorstr');location='java script:history.go(-1);';</script>";

exit();

}

function save(){

$this->check_path();

$this->check_size();

$this->check_type();

$this->up_photo();

$this->showphoto();

}

}

?>