PHP实现上传文件并存进数据库的方法
这篇文章主要介绍了PHP实现上传文件并存进数据库的方法,涉及php文件上传所涉及的文件与表单操作及数据库操作相关技巧,非常具有实用价值,需要的朋友可以参考下
本文实例讲述了PHP实现上传文件并存进数据库的方法。分享给大家供大家参考。具体如下:
show_add.php文件如下:
- <?php
- if(!isset($_REQUEST['id']) or $_REQUEST['id']=="") die("error: id none");
- $id = $_REQUEST['id'];
- //定位记录,读出
- $conn=mysql_connect("localhost","root","admin");
- if(!$conn) die("error: mysql connect failed");
- mysql_select_db("nokiapaymentplat",$conn);
- $sql = "select * from receive where ;
- $result = mysql_query($sql,$conn);
- if(!$result) die("error: mysql query");
- $num=mysql_num_rows($result);
- if($num<1) die("error: no this recorder");
- $data = mysql_result($result,0,"file_data");
- $type = mysql_result($result,0,"file_type");
- $name = mysql_result($result,0,"file_name");
- mysql_close($conn);
- //先输出相应的文件头,并且恢复原来的文件名
- header("Content-type:$type");
- header("Content-Disposition: attachment; filename=$name");
- echo $data;
- ?>
show_info.php文件如下:
- <?php
- if(!isset($_REQUEST['id']) or $_REQUEST['id']=="") die("error: id none");
- $id = $_REQUEST['id'];
- //定位记录,读出
- $conn=mysql_connect("localhost","root","admin");
- if(!$conn) die("error: mysql connect failed");
- mysql_select_db("nokiapaymentplat",$conn);
- $sql = "select file_name ,file_size from receive where ;
- $result = mysql_query($sql,$conn);
- if(!$result) die(" error: mysql query");
- //如果没有指定的记录,则报错
- $num=mysql_num_rows($result);
- if($num<1) die("error: no this recorder");
- //下面两句程序也可以这么写
- //$row=mysql_fetch_object($result);
- //$name=$row->name;
- //$size=$row->size;
- $name = mysql_result($result,0,"file_name");
- $size = mysql_result($result,0,"file_size");
- mysql_close($conn);
- echo "<hr>上传的文件的信息:";
- echo "<br>The file's name - $name";
- echo "<br>The file's size - $size";
- echo "<br><a href=show_add.php?;
- ?>
submit.php文件如下:
- <?php
- if(is_uploaded_file($_FILES['myfile']['tmp_name'])) {
- //有了上传文件了
- $myfile=$_FILES["myfile"];
- //设置超时限制时间,缺省时间为 30秒,设置为0时为不限时
- $time_limit=60;
- set_time_limit($time_limit); //
- //把文件内容读到字符串中
- $fp=fopen($myfile['tmp_name'], "rb");
- if(!$fp) die("file open error");
- $file_data = addslashes(fread($fp, filesize($myfile['tmp_name'])));
- fclose($fp);
- unlink($myfile['tmp_name']);
- //文件格式,名字,大小
- $file_type=$myfile["type"];
- $file_name=$myfile["name"];
- $file_size=$myfile["size"];
- die($file_type);
- //连接数据库,把文件存到数据库中
- $conn=mysql_connect("localhost","root","admin");
- if(!$conn) die("error : mysql connect failed");
- mysql_select_db("nokiapaymentplat",$conn);
- $sql="insert into receive
- (file_data,file_type,file_name,file_size)
- values ('$file_data','$file_type','$file_name',$file_size)";
- $result=mysql_query($sql,$conn);
- //下面这句取出了刚才的insert语句的id
- $id=mysql_insert_id();
- mysql_close($conn);
- set_time_limit(30); //恢复缺省超时设置
- echo "上传成功--- ";
- echo "<a href='show_info.php?>显示上传文件信息</a>";
- }
- else {
- echo "你没有上传任何文件";
- }
- ?>
upload.php文件如下:
- <html>
- <head>
- <title>文件上传表单</title>
- </head>
- <body>
- <table>
- <form enctype='multipart/form-data' name='myform' action='submit.php'
- method='post'>
- <INPUT TYPE = "hidden" NAME = "MAX_FILE_SIZE" VALUE ="1000000">
- <tr><td>选择上传文件</td><td>
- <input name='myfile' type='file'></td></tr>
- <tr><td colspan='2'><input name='submit' value='上传' type='submit'></td></tr>
- </table>
- </body>
- </html>
希望本文所述对大家的PHP程序设计有所帮助。