PHP文件上传小程序 适合初学者学习!
这篇文章主要为大家详细介绍了PHP文件上传小程序,给初学者提供的PHP文件上传小程序,具有一定的参考价值,感兴趣的小伙伴们可以参考一下。
本文实例为大家分享了PHP文件上传小程序的具体代码,供大家参考,具体内容如下
废话略过,直接上代码:
首先前端代码:index.html
- <html>
- <head>
- <meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
- <title>文件上传Demo</title>
- </head>
- <body>
- <form method="post" action="upload.php" enctype="multipart/form-data">
- <table 100%">
- <tr>
- <td width=55 height=20 align="center">
- <input type="hidden" name="MAX_FILE_SIZE" value="2000000">文件:
- </td>
- <td height="16">
- <input name="file" type="file" value="浏览" />
- <input type="submit" value="上传" name="submit" />
- </td>
- </tr>
- </table>
- </form>
- </body>
- </html>
接下来是重点:upload.php
- <?php
- /**
- * @title 文件上传示例
- * @author FeoniX
- */
- header("Content-Type:text/html; charset=utf-8");
- if($_POST['submit']){
- $upfiles = new Upload();
- $upfiles->upload_file();
- }
- class Upload{
- public $upload_name; //上传文件名
- public $upload_tmp_name; //上传临时文件名
- public $upload_final_name; //上传文件的最终文件名
- public $upload_target_dir; //文件被上传到的目标目录
- public $upload_target_path; //文件被上传到的最终路径
- public $upload_filetype ; //上传文件类型
- public $allow_uploadedfile_type;//允许的上传文件类型
- public $upload_file_size; //上传文件的大小
- public $allow_uploaded_maxsize=10000000;//允许上传文件的最大值
- //构造函数
- public function __construct()
- {
- $this->upload_name = $_FILES["file"]["name"]; //取得上传文件名
- $this->upload_filetype = $_FILES["file"]["type"];
- $this->upload_tmp_name = $_FILES["file"]["tmp_name"];
- $this->allow_uploadedfile_type = array('jpeg','jpg','png','gif','bmp','doc','xls','csv','zip','rar','txt','wps');
- $this->upload_file_size = $_FILES["file"]["size"];
- $this->upload_target_dir="./upload";
- }
- //文件上传
- public function upload_file()
- {
- $upload_filetype = $this->getFileExt($this->upload_name);//获取文件扩展名
- if(in_array($upload_filetype,$this->allow_uploadedfile_type))//判断文件类型是否符合要求
- {
- if($this->upload_file_size < $this->allow_uploaded_maxsize)//判断文件大小是否超过允许的最大值
- {
- if(!is_dir($this->upload_target_dir))//如果文件上传目录不存在
- {
- mkdir($this->upload_target_dir);//创建文件上传目录
- chmod($this->upload_target_dir,0777);//改权限
- }
- $this->upload_final_name = date("YmdHis").rand(0,100).'.'.$upload_filetype;//生成随机文件名
- $this->upload_target_path = $this->upload_target_dir."/".$this->upload_final_name;//文件上传目标目录
- if(!move_uploaded_file($this->upload_tmp_name,$this->upload_target_path))//文件移动失败
- {
- echo "<font color=red>文件上传失败!</font>";
- }
- else
- {
- echo "<font color=green>文件上传成功!</font>";
- }
- }
- else
- {
- echo("<font color=red>文件太大,上传失败!</font>");
- }
- }
- else
- {
- echo("<font color=red>仅支持一下文件类型,请重新选择:<br>".implode(',',$this->allow_uploadedfile_type)."</font>");
- }
- }
- /**
- *获取文件扩展名
- *@param String $filename 要获取文件名的文件
- */
- public function getFileExt($filename){
- $info = pathinfo($filename);
- return @$info["extension"];
- }
- }
- ?>