将空文件上传并存储到数据库中，并将上传大小限制为1mb

Question

1. 我希望能够在我的数据库中存储空文件
2. 我想将文件大小限制为1mb

我试图上传有文件和没有文件，但第一个if($_FILES['word']['size'] = (0000000))没有执行。相反，它执行ELSE语句if($_FILES['word']['size'] < (1024000))。

<?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";
}
?>

Answer 1

你的意思是空文件还是没有文件？

如果存在大小为0的文件：(双等号(

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

如果没有上传文件，你可以写：

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

注：

1MB=1字节*1024*1024=1048576