PHP 文件上傳的綜合實例

時間 2019-11-20

標籤 php 文件上傳綜合實例欄目 PHP 简体版

原文原文鏈接

一、upload.phpjavascript

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Add文件上傳_www.jbxue.com</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body>

<form enctype="multipart/form-data" action="uploadProcess.php" method="post" >
<table>
<tr><td>請填寫用戶名</td><td><input type="text" name="username"></td></tr>
<tr><td>請簡單介紹文件</td><td><textarea rows="7" cols="50" name="fileintro" style="width:300px;"></textarea></td></tr>
<tr><td>請上傳你的文件</td><td><input type="file" name="myfile"></td></tr>
<tr><td colspan="2"><input type="submit" value="上傳"><td></tr>
</table>
</form>
</body>
</html>php

二、uploadProcess.phphtml

<?php
/**
* 文件上傳接收數據
* by www.jbxue.com
*/
$username=$_POST['username'];
$fileintro=$_POST['fileintro'];

//echo $username.$fileintro;
//獲取文件信息
/* echo "<pre>";
print_r($_FILES);
echo "</pre>";
*/
//獲取文件的大小
$file_size=$_FILES['myfile']['size'];
if($file_size>2*1024*1024){
echo "<script type='text/javascript'>window.alert('文件不能大於2M')</script>";
exit();
}
//獲取文件類型
$file_type=$_FILES['myfile']['type'];
if($file_type!="image/jpeg" && $file_type!="image/pjpeg"){
echo "文件類型只能是 jpg 格式";
exit();
}

//判斷上傳是否OK
if(is_uploaded_file($_FILES['myfile']['tmp_name'])){
//獲得上傳的文件轉存到你但願的目錄
$upload_file=$_FILES['myfile']['tmp_name'];

//防止圖片覆蓋問題，爲每一個用戶創建一個文件夾
$user_path=$_SERVER['DOCUMENT_ROOT']."/file/up/".$username;
if(!file_exists($user_path)){
mkdir ($user_path);
}
//$move_to_file=$user_path."/".$_FILES['myfile']['name'];
//防止用戶上傳用戶名相同的問題
$file_true_name=$_FILES['myfile']['name'];
$move_to_file=$user_path."/".time().rand(1,1000).substr($file_true_name,strripos($file_true_name,"."));
//echo $upload_file.$move_to_file;
//中文要轉碼
if(move_uploaded_file($upload_file,iconv("utf-8","gb2312","$move_to_file"))){
echo $_FILES['myfile']['name']."上傳成功";
}else{
echo "上傳失敗";
}
}else{
echo "上傳失敗";
}
?>java

三、封裝：服務器

<?php
/**
* 文件上傳類
* by www.jbxue.com
*/
class Upload{
public $upload_name; //上傳文件名
public $upload_tmp_path; //上傳文件保存到服務器的temp路徑
public $file_size;
public $file_type;
public $file_save_path;
function __construct(){
$this->upload_name=$_FILES['myfile']['name'];
$this->upload_tmp_path=$_FILES['myfile']['tmp_name'];
$this->file_size=$_FILES['myfile']['size'];
$this->file_type=$_FILES['myfile']['type'];
$this->allow_file_type = array('jpeg','jpg','png','gif','bmp','doc','zip','rar','txt','wps','xlsx','ppt');
$this->file_save_path=$_SERVER['DOCUMENT_ROOT']."/file/up/";
}
public function upload_file($username){
//判斷文件大小
if($this->file_size>2*1024*1024){
echo "<script type='text/javascript'>window.alert('文件不能大於2M')</script>";
exit();
}
//獲取文件類型
/* if($this->file_type!="image/jpeg" && $this->file_type!="image/pjpeg"){
echo "文件類型只能是 jpg 格式";
exit();
}
*/ //獲取文件的擴展名
$file_type=$this->getFileExt($this->upload_name);
if(!in_array($file_type,$this->allow_file_type)){
echo "上傳文件類型格式錯誤";
exit();
}
//判斷上傳是否OK
if(is_uploaded_file($this->upload_tmp_path)){

//防止圖片覆蓋問題，爲每一個用戶創建一個文件夾
$user_path=$this->file_save_path.$username;
if(!file_exists($user_path)){
mkdir ($user_path);
}
//$move_to_file=$user_path."/".$_FILES['myfile']['name'];
//防止用戶上傳用戶名相同的問題
//$file_true_name=$_FILES['myfile']['name'];
$move_to_file=$user_path."/".time().rand(1,1000).substr($this->upload_name,strripos($this->upload_name,"."));
//echo $upload_file.$move_to_file;
//中文要轉碼
if(move_uploaded_file($this->upload_tmp_path,iconv("utf-8","gb2312","$move_to_file"))){
echo $this->upload_name."上傳成功";
}else{
echo "上傳失敗";
}
}else{
echo "上傳失敗";
}
}

//獲取文件的擴展名
public function getFileExt($filename){
$fileExt=pathinfo($filename);
return $fileExt["extension"];
}
}
?>post