search

Home >php教程 >PHP源码 >PHP实现上传文件并存进数据库的方法_php技巧

PHP实现上传文件并存进数据库的方法_php技巧

PHP中文网
PHP中文网Original
2016-05-25 17:13:221106browse

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[&#39;id&#39;]) or $_REQUEST[&#39;id&#39;]=="") die("error: id none");
  $id = $_REQUEST[&#39;id&#39;];
  //定位记录,读出
  $conn=mysql_connect("localhost","root","admin");
  if(!$conn) die("error: mysql connect failed");
  mysql_select_db("nokiapaymentplat",$conn);
  $sql = "select * from receive where id=$id";
  $result = mysql_query($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[&#39;id&#39;]) or $_REQUEST[&#39;id&#39;]=="") die("error: id none");
  $id = $_REQUEST[&#39;id&#39;];
  //定位记录,读出
  $conn=mysql_connect("localhost","root","admin");
  if(!$conn) die("error: mysql connect failed");
  mysql_select_db("nokiapaymentplat",$conn);
  $sql = "select file_name ,file_size from receive where id=$id";
  $result = mysql_query($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&#39;s name - $name";  
  echo "<br>The file&#39;s size - $size"; 
  echo "<br><a href=show_add.php?id=$id>附件</a>";
?>

submit.php文件如下：

<?php  
  if(is_uploaded_file($_FILES[&#39;myfile&#39;][&#39;tmp_name&#39;])) {
  //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[&#39;tmp_name&#39;], "rb");
    if(!$fp) die("file open error");
    $file_data = addslashes(fread($fp, filesize($myfile[&#39;tmp_name&#39;])));
    fclose($fp);
    unlink($myfile[&#39;tmp_name&#39;]); 
    //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);
    $sql="insert into receive 
    (file_data,file_type,file_name,file_size) 
    values (&#39;$file_data&#39;,&#39;$file_type&#39;,&#39;$file_name&#39;,$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=&#39;show_info.php?id=$id&#39;>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=&#39;multipart/form-data&#39; name=&#39;myform&#39; action=&#39;submit.php&#39; 
method=&#39;post&#39;>  
<INPUT TYPE = "hidden" NAME = "MAX_FILE_SIZE" VALUE ="1000000">
<tr><td>选择上传文件</td><td>
<input name=&#39;myfile&#39; type=&#39;file&#39;></td></tr> 
<tr><td colspan=&#39;2&#39;><input name=&#39;submit&#39; value=&#39;上传&#39;  type=&#39;submit&#39;></td></tr>  
</table>  
</body>  
</html>

Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：php里Array2xmlNext article：文件MIME类型获取

Related articles

See more