PHP文件上传
1、upload.php
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Add文件上传_www.jbxue.com</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
</head>
<body>
<!--文件上传要注意:1、要有enctyp，2、method="post"-->
<form enctype="multipart/form-data" action="uploadProcess.php" method="post" >
<table>
<tr><td>请填写用户名</td><td><input type="text" name="username"></td></tr>
<tr><td>请简单介绍文件</td><td><textarea rows="7" cols="50" name="fileintro" style="300px;"></textarea></td></tr>
<tr><td>请上传你的文件</td><td><input type="file" name="myfile"></td></tr>
<tr><td colspan="2"><input type="submit" value="上传"><td></tr>
</table>
</form>
</body>
</html>
2、uploadProcess.php
<?php /** * 文件上传 接收数据 * by www.jbxue.com */ $username=$_POST['username']; $fileintro=$_POST['fileintro']; //echo $username.$fileintro; //获取文件信息 /* echo "<pre>"; print_r($_FILES); echo "</pre>"; */ //获取文件的大小 $file_size=$_FILES['myfile']['size']; if($file_size>2*1024*1024){ echo "<script type='text/javascript'>window.alert('文件不能大于2M')</script>"; exit(); } //获取文件类型 $file_type=$_FILES['myfile']['type']; if($file_type!="image/jpeg" && $file_type!="image/pjpeg"){ echo "文件类型只能是 jpg 格式"; exit(); } //判断上传是否OK if(is_uploaded_file($_FILES['myfile']['tmp_name'])){ //得到上传的文件 转存到你希望的目录 $upload_file=$_FILES['myfile']['tmp_name']; //防止图片覆盖问题，为每个用户建立一个文件夹 $user_path=$_SERVER['DOCUMENT_ROOT']."/file/up/".$username; if(!file_exists($user_path)){ mkdir ($user_path); } //$move_to_file=$user_path."/".$_FILES['myfile']['name']; //防止用户上传用户名相同的问题 $file_true_name=$_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; //中文要转码 if(move_uploaded_file($upload_file,iconv("utf-8","gb2312","$move_to_file"))){ echo $_FILES['myfile']['name']."上传成功"; }else{ echo "上传失败"; } }else{ echo "上传失败"; } ?>
3、封装：
<?php /** * 文件上传类 * by www.jbxue.com */ class Upload{ public $upload_name; //上传文件名 public $upload_tmp_path; //上传文件保存到服务器的temp路径 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($username){ //判断文件大小 if($this->file_size>2*1024*1024){ echo "<script type='text/javascript'>window.alert('文件不能大于2M')</script>"; exit(); } //获取文件类型 /* if($this->file_type!="image/jpeg" && $this->file_type!="image/pjpeg"){ echo "文件类型只能是 jpg 格式"; exit(); } */ //获取文件的扩展名 $file_type=$this->getFileExt($this->upload_name); if(!in_array($file_type,$this->allow_file_type)){ echo "上传文件类型格式错误"; exit(); } //判断上传是否OK if(is_uploaded_file($this->upload_tmp_path)){ //防止图片覆盖问题，为每个用户建立一个文件夹 $user_path=$this->file_save_path.$username; if(!file_exists($user_path)){ mkdir ($user_path); } //$move_to_file=$user_path."/".$_FILES['myfile']['name']; //防止用户上传用户名相同的问题 //$file_true_name=$_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; //中文要转码 if(move_uploaded_file($this->upload_tmp_path,iconv("utf-8","gb2312","$move_to_file"))){ echo $this->upload_name."上传成功"; }else{ echo "上传失败"; } }else{ echo "上传失败"; } } //获取文件的扩展名 public function getFileExt($filename){ $fileExt=pathinfo($filename); return $fileExt["extension"]; } } ?>