将空文件上传并存储到数据库，并将上传大小限制为1MB

问题描述：

我希望能够将空文件存储在我的数据库中。
我想将文件大小限制为1mb。

我试图上传有和没有文件，但第一个if($_FILES['word']['size'] = (0000000))不执行。相反，它执行ELSE语句if($_FILES['word']['size'] < (1024000))。将空文件上传并存储到数据库，并将上传大小限制为1MB

<?php 
error_reporting(E_ALL^E_NOTICE); 
mysql_connect("localhost", "root", "") or die (mysql_error()); 
mysql_select_db("calendario") or die (mysql_error()); 


#Add Files in Database# 
session_start(); 
if(isset($_POST['btnadd'])){ 
$title =$_POST['txttitle']; 
$detail =$_POST['txtdetail']; 

$month=$_POST['month']; 
$day =$_POST['day']; 
$year =$_POST['year']; 
$eventdate = $month."/".$day."/".$year; 

$emonth=$_POST['Emonth']; 
$eday =$_POST['Eday']; 
$eyear =$_POST['Eyear']; 
$expire = $emonth."/".$eday."/".$eyear; 

$code = $_SESSION['code']; 

$id = $_SESSION["username"]; 

##############################################################################################Image 

    $word =$_FILES['word']['tmp_name']; 
    $word_name = addslashes($_FILES['word']['name']); 
    $word_size = addslashes($_FILES['word']['size']); 
    $word_type = $_FILES['word']['type']; 



if($_FILES['word']['size'] = (0000000)) //if files uploaded empty, still enter database 
{ 
    echo("<script language=\"JavaScript\" type=\"text/JavaScript\">\n"); 
    echo("alert('File Error 0.');\n"); 
    echo("window.location = ('calender.php');\n"); 
    echo("</script>\n"); 
} 
else 
{ 
    if($_FILES['word']['size'] < (1024000)) //if files is less than 1mb 
    { 
    echo("<script language=\"JavaScript\" type=\"text/JavaScript\">\n"); 
    echo("alert('File Error.');\n"); 
    echo("window.location = ('calender.php');\n"); 
    echo("</script>\n"); 
    } 

    else{ 
    $word = addslashes(file_get_contents($_FILES['word']['tmp_name'])); 
    $word_name = addslashes($_FILES['word']['name']); 
    $word_size = addslashes($_FILES['word']['size']); 
    $fp  = fopen($word, 'r'); 
    $content = fread($fp, filesize($word)); 
    $content = addslashes($content); 
    fclose($fp); 


    if(!get_magic_quotes_gpc()) 
{ 
    $word_name = addslashes($word_name); 
} 

    } 


############################################################################################Insert 
$sqlinsert = "INSERT into eventcalendar(classCode,Title,Detail,eventDate,dateAdded,Image,WordPpt,WordPptName,WordPptSize,WordPptType,Username,Edate) values ('".$code."','".$title."','".$detail."','".$eventdate."',now(),'".$image."','".$content."','".$word_name."','".$word_size."','".$word_type."','".$id."','".$expire."')"; 
$resultinginsert = mysql_query($sqlinsert); 
} 
if($resultinginsert){ 
echo("<script language=\"JavaScript\" type=\"text/JavaScript\">\n"); 
echo("alert('Done.');\n"); 
echo("window.location = ('calender.php');\n"); 
echo("</script>\n"); 
}else{ 
echo "(Event Failed to be Added....)";  

} 
} 
else 
{ 
    echo "error"; 
} 

?>

答

你的意思是空文件或没有文件？

如果有文件，但大小为0：（双等号）

if($_FILES['word']['size'] == 0)

如果没有上传的文件，你可以这样写：

if(!isset($_FILES['word']))

注：

1MB = 1字节* 1024 * 1024 = 1048576

将空文件上传并存储到数据库，并将上传大小限制为1MB

相关推荐