php学习笔记（十一）文件上传类的编写
<?phpclass FileUpload{
//上传文件路径
private $filepath;
//上传文件类型
private $allowtype = array("gif","jpg","png","jpeg");
//上传文件的最大长度
private $maxsize=102400;
//是否设置重命名文件
private $isnewname = true;
private $originame;
private $tmpfilename;
private $filetype;
private $filesize;
private $newfilename;
private $errorNum=0;
private $errormess;
/**
* 用于对上传文件的初始化
* 1.指定上传的路径
* 2.指定允许的类型
* 3.限制文件的大小
* 4.是否生成新的文件名
* 让用户可以不用按照位置传递参数
*/
function __construct($options=array()){
//查看本类的属性
// print_r(@get_class_vars(get_class($this)));
foreach ($options as $key=>$value){
$key = strtolower($key);
// echo "传递的数组参数".$key."=>".$value."<br>";
//查看传递的数组下标是否存在成员属性的数组里
if (!@in_array($key, get_class_vars(get_class($this)))){
continue;
}else{
$this->setOptions($key, $value);
}
}
}
/**
* 设置成员属性
* Enter description here ...
* @param unknown_type $key
* @param unknown_type $value
*/
private function setOptions($key,$value){
$this->$key=$value;
}
/**
* 获取错误信息
* Enter description here ...
*/
private function getError(){
$str = "上传文件".$this->originame."出错！";
switch ($this->errorNum){
case 4:$str.="没有文件被上传";break;
case 3:$str.="文件只有部分上传";break;
case 2:$str.="上传文件超过了html表单中MAX_FILE_SIZE指定的值";break;
case 1:$str.="上传文件超过了php.ini的upload_max_filsize的值";break;
case -1:$str.="类型不合法";break;
case -2:$str.="文件过大，上传文件不能超过".$this->maxsize."个字节";break;
case -3:$str.="上传失败";break;
case -4:$str.="建立文件目录失败，请重新指定上传目录";break;
case -5:$str.="必须指定上传文件的路径";break;
default:$str.="未知错误";
}
return $str."<br>";
}
/**
* 检查路径
*/
private function checkFilePath(){
if (empty($this->filepath)){
$this->setOptions('errorNum', -5);
return false;
}
if (!file_exists($this->filepath)||!is_writable($this->filepath)){
if (!@mkdir($this->filepath,0755)){
$this->setOptions("errorNum", -4);
return false;
}
}
return true;
}
/**
* 检查文件类型
* Enter description here ...
*/
private function checkType(){
if (@in_array(strtolower($this->filetype), $this->allowtype)){
return true;
}else{
$this->setOptions("errorNum", -1);
return false;
}
}
/**
* 检查文件大小
* Enter description here ...
*/
private function checkFileSize(){
if ($this->filesize>$this->maxsize){
$this->setOptions("errorNum", -2);
return false;
}else {
return true;
}
}
/**
* 设置上传后的文件名
* Enter description here ...
*/
private function setNewFilename(){
if ($this->isnewname)
$this->setOptions("newfilename", $this->proName());
else
$this->setOptions("newfilename", $this->originame);
}
/**
* 设置文件名
* Enter description here ...
*/
private function proName(){
$filename = @date("YmdHis").rand(100, 999);
return $filename.".".$this->filetype;
}
private function copyFile(){
if (!$this->errorNum){
$filepath = rtrim($this->filepath,'/').'/';
$filepath.=$this->newfilename;
if (@move_uploaded_file($this->tmpfilename, $filepath)){
return true;
}else{
$this->setOptions("error", -3);
return false;
}
}else {
return false;
}
}
/**
* 用于上传一个文件
* Enter description here ...
* @param unknown_type $fileField
*/
function uploadFile($fileField){
$return = true;
//检查文件路径是否正确
if (!$this->checkFilePath()){
$this->errormess = $this->getError();
return false;
}
$name=$_FILES[$fileField]['name'];
$tmp_name=$_FILES[$fileField]['tmp_name'];
$size=$_FILES[$fileField]['size'];
$error=$_FILES[$fileField]['error'];
if (is_array($name)){
$filnames = array();
$errors = array();
for ($i=0;$i<count($name);$i++){
if ($this->setFiles($name[$i],$tmp_name[$i],$size[$i],$error[$i])){
if (!$this->checkFileSize()||!$this->checkType()){
$errors[]=$this->getError();
$return = false;
}else {
$this->setNewFilename();
if ($this->copyFile()){
$filnames[] = $this->newfilename;
}else{
$return = false;
}
}
}else{
$errors[]=$this->getError();
$return = false;
}
if (!$return)
$this->setFiles();
}
$this->errormess=$errors;
$this->newfilename=$filnames;
return $return;
}else{
if ($this->setFiles($name,$tmp_name,$size,$error)){
if ($this->checkFileSize()&&$this->checkType()){
$this->setNewFilename();
if ($this->copyFile()){
return true;
}else{
$return = false;
}
}else {
$return = false;
}
}else{
$return = false;
}
if (!$return)
$this->errormess = $this->getError();
return $return;
}
}
/**
* 设置和$FILES有关的内容
* Enter description here ...
*/
private function setFiles($name="",$tmp_name="",$size=0,$error=0){
$this->setOptions("errorNum", $error);
if ($error){
return false;
}
$this->setOptions("originame", $name);
$this->setOptions("tmpfilename", $tmp_name);
$this->setOptions("filesize", $size);
$arrStr = explode(".", $name);
$this->setOptions("filetype", strtolower($arrStr));
return true;
}
/**
* 获取上传后的文件名
* Enter description here ...
*/
function getNewFileName(){
return $this->newfilename;
}
/**
* 上传如果失败则调用此方法
* 查看错误报告
* Enter description here ...
*/
function getErrorMsg(){
return $this->errormess;
}
}
?>
<html>
<head>
<title>Insert title here</title>
</head>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
<input type="hidden" name="MAX_FILE_SIZE" value="1024000">
<input type="file" name="spic[]"><br>
<input type="file" name="spic[]"><br>
<input type="file" name="spic[]"><br>
<input type="file" name="spic[]"><br>
<input type="submit" name="submit" value="upload.File">
</form>
</body>
</html>
<?php
require 'FileUpload.class.php';
$up = new FileUpload(array('allowtype'=>array("jpg"),'filepath'=>'./upload','maxsize'=>1024000));
if ($up->uploadFile('spic')){
echo print_r($up->getNewFileName())."<br>";
}else {
echo $up->getErrorMsg()."<br>";
};
// var_dump($up);
?>
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