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PHP 上传文件并存进数据库

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show_add.php

<?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);
    $sql =  "select * from receive where id=$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

<?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);

    $sql =  "select file_name ,file_size from receive where id=$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's name - $name";   
    echo "<br>The file's size - $size";  
    echo "<br><a href=show_add.php?id=$id>附件</a>";
?> 

submit.php

<?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?id=$id'>显示上传文件信息</a>";
    }   
    else {   
        echo "你没有上传任何文件";   
    }   
?>  

upload.php

<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> 

标签:php,文件上传

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