上载文件数量限制 [英] Limit of uploading documents
本文介绍了上载文件数量限制的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
如何限制上传文件！
例如:-如果数据库已经有5个条目，则不应采用第6个条目.并显示您只能有5个文档
我的代码:-
<?php
error_reporting( ~E_NOTICE ); // avoid notice
require_once 'dbconfig.php';
if(isset($_POST['btnsave']))
{
$username = $_POST['user_name'];// user name
$userjob = $_POST['user_job'];// user email
$imgFile = $_FILES['user_image']['name'];
$tmp_dir = $_FILES['user_image']['tmp_name'];
$imgSize = $_FILES['user_image']['size'];
if(empty($username)){
$errMSG = "Please Enter Name.";
}
else if(empty($userjob)){
$errMSG = "Please Enter Description.";
}
else if(empty($imgFile)){
$errMSG = "Please Select Image File.";
}
else
{
$upload_dir = 'user_images/'; // upload directory
$imgExt = strtolower(pathinfo($imgFile,PATHINFO_EXTENSION)); // get image extension
// valid image extensions
$valid_extensions = array('jpeg', 'jpg', 'png', 'gif', 'txt'); // valid extensions
// rename uploading image
$userpic = rand(1000,1000000).".".$imgExt;
// allow valid image file formats
if(in_array($imgExt, $valid_extensions)){
// Check file size
if($imgSize < 10000000) {
move_uploaded_file($tmp_dir,$upload_dir.$userpic);
}
else{
$errMSG = "Sorry, your file is too large.";
}
}
else{
$errMSG = "Sorry, this file is not allowed.";
}
}
// if no error occured, continue ....
if(!isset($errMSG))
{
$stmt = $DB_con->prepare('INSERT INTO tbl_users(userName,userProfession,userPic) VALUES(:uname, :ujob, :upic)');
$stmt->bindParam(':uname',$username);
$stmt->bindParam(':ujob',$userjob);
$stmt->bindParam(':upic',$userpic);
if($stmt->execute())
{
$successMSG = "new record succesfully inserted ...";
header("refresh:1;index.php"); // redirects image view page after 1 seconds.
}
else
{
$errMSG = "error while inserting....";
}
}
}
?>
那么，我应该添加些什么来提供我的输出！
我的数据库中只需要5个文档.如果用户尝试添加5个以上的文档，则应显示错误.
解决方案
+1投票给 aidinMC
aidinMC 中有两个小错误
2)将
更改了这两个错误后，
if($count >= 5)更改为if($count < 5) $count = $data[0]['rows'];
if($count < 5)
{
所以您想要的是这里:-
<?php
error_reporting( ~E_NOTICE ); // avoid notice
require_once 'dbconfig.php';
if(isset($_POST['btnsave']))
{
$username = $_POST['user_name'];// user name
$userjob = $_POST['user_job'];// user email
$imgFile = $_FILES['user_image']['name'];
$tmp_dir = $_FILES['user_image']['tmp_name'];
$imgSize = $_FILES['user_image']['size'];
if(empty($username)){
$errMSG = "Please Enter Name.";
}
else if(empty($userjob)){
$errMSG = "Please Enter Description.";
}
else if(empty($imgFile)){
$errMSG = "Please Select Image File.";
}
else
{
$upload_dir = 'user_images/'; // upload directory
$imgExt = strtolower(pathinfo($imgFile,PATHINFO_EXTENSION)); // get image extension
// valid image extensions
$valid_extensions = array('jpeg', 'jpg', 'png', 'gif', 'txt'); // valid extensions
// rename uploading image
$userpic = rand(1000,1000000).".".$imgExt;
// allow valid image file formats
if(in_array($imgExt, $valid_extensions)){
// Check file size
if($imgSize < 10000000) {
move_uploaded_file($tmp_dir,$upload_dir.$userpic);
}
else{
$errMSG = "Sorry, your file is too large.";
}
}
else{
$errMSG = "Sorry, this file is not allowed.";
}
}
// if no error occured, continue ....
if(!isset($errMSG))
{
$stmt = $DB_con->prepare('INSERT INTO tbl_users(userName,userProfession,userPic) VALUES(:uname, :ujob, :upic)');
$stmt->bindParam(':uname',$username);
$stmt->bindParam(':ujob',$userjob);
$stmt->bindParam(':upic',$userpic);
$data = $DB_con->query("SELECT COUNT(*) AS rows FROM tbl_users WHERE 1")->fetchall();
$count = $data[0]['rows'];
if($count < 5)
{
if($stmt->execute())
{
$successMSG = "new record succesfully inserted ...";
header("refresh:1;index.php"); // redirects image view page after 1 seconds.
}
else
{
$errMSG = "error while inserting....";
}
}
else
{
$errMSG = "You already insert 5 rows";
}
}
}
?>
我刚刚编辑了代码的放置位置由aidinMC 并修复了 aidinMC 的答案.
希望这会起作用.
How to limit uploading documents!
For example:- If the database already has 5 entries, it should not take the 6th entry. And show You can only have 5 documents
My Code:-
<?php
error_reporting( ~E_NOTICE ); // avoid notice
require_once 'dbconfig.php';
if(isset($_POST['btnsave']))
{
$username = $_POST['user_name'];// user name
$userjob = $_POST['user_job'];// user email
$imgFile = $_FILES['user_image']['name'];
$tmp_dir = $_FILES['user_image']['tmp_name'];
$imgSize = $_FILES['user_image']['size'];
if(empty($username)){
$errMSG = "Please Enter Name.";
}
else if(empty($userjob)){
$errMSG = "Please Enter Description.";
}
else if(empty($imgFile)){
$errMSG = "Please Select Image File.";
}
else
{
$upload_dir = 'user_images/'; // upload directory
$imgExt = strtolower(pathinfo($imgFile,PATHINFO_EXTENSION)); // get image extension
// valid image extensions
$valid_extensions = array('jpeg', 'jpg', 'png', 'gif', 'txt'); // valid extensions
// rename uploading image
$userpic = rand(1000,1000000).".".$imgExt;
// allow valid image file formats
if(in_array($imgExt, $valid_extensions)){
// Check file size
if($imgSize < 10000000) {
move_uploaded_file($tmp_dir,$upload_dir.$userpic);
}
else{
$errMSG = "Sorry, your file is too large.";
}
}
else{
$errMSG = "Sorry, this file is not allowed.";
}
}
// if no error occured, continue ....
if(!isset($errMSG))
{
$stmt = $DB_con->prepare('INSERT INTO tbl_users(userName,userProfession,userPic) VALUES(:uname, :ujob, :upic)');
$stmt->bindParam(':uname',$username);
$stmt->bindParam(':ujob',$userjob);
$stmt->bindParam(':upic',$userpic);
if($stmt->execute())
{
$successMSG = "new record succesfully inserted ...";
header("refresh:1;index.php"); // redirects image view page after 1 seconds.
}
else
{
$errMSG = "error while inserting....";
}
}
}
?>
So, what should I add that give my output!
I want only 5 documents in my database. If user tries to add more than 5 documents, the error should be shown.
解决方案
+1 vote to aidinMC
Answer of aidinMC partially solves your question.
There are two small mistakes in aidinMC answer
1) Strike of
:fromelse:
}
else
$errMSG = "You already insert 5 rows";
endif;
2) Change
if($count >= 5)toif($count < 5)
$count = $data[0]['rows'];
if($count < 5)
{
After changing these two errors Answer of aidinMC will work! But after seeing your comments especially Limit of uploading documents & Limit of uploading documents it will not give the result as you want.
So what you want is here:-
<?php
error_reporting( ~E_NOTICE ); // avoid notice
require_once 'dbconfig.php';
if(isset($_POST['btnsave']))
{
$username = $_POST['user_name'];// user name
$userjob = $_POST['user_job'];// user email
$imgFile = $_FILES['user_image']['name'];
$tmp_dir = $_FILES['user_image']['tmp_name'];
$imgSize = $_FILES['user_image']['size'];
if(empty($username)){
$errMSG = "Please Enter Name.";
}
else if(empty($userjob)){
$errMSG = "Please Enter Description.";
}
else if(empty($imgFile)){
$errMSG = "Please Select Image File.";
}
else
{
$upload_dir = 'user_images/'; // upload directory
$imgExt = strtolower(pathinfo($imgFile,PATHINFO_EXTENSION)); // get image extension
// valid image extensions
$valid_extensions = array('jpeg', 'jpg', 'png', 'gif', 'txt'); // valid extensions
// rename uploading image
$userpic = rand(1000,1000000).".".$imgExt;
// allow valid image file formats
if(in_array($imgExt, $valid_extensions)){
// Check file size
if($imgSize < 10000000) {
move_uploaded_file($tmp_dir,$upload_dir.$userpic);
}
else{
$errMSG = "Sorry, your file is too large.";
}
}
else{
$errMSG = "Sorry, this file is not allowed.";
}
}
// if no error occured, continue ....
if(!isset($errMSG))
{
$stmt = $DB_con->prepare('INSERT INTO tbl_users(userName,userProfession,userPic) VALUES(:uname, :ujob, :upic)');
$stmt->bindParam(':uname',$username);
$stmt->bindParam(':ujob',$userjob);
$stmt->bindParam(':upic',$userpic);
$data = $DB_con->query("SELECT COUNT(*) AS rows FROM tbl_users WHERE 1")->fetchall();
$count = $data[0]['rows'];
if($count < 5)
{
if($stmt->execute())
{
$successMSG = "new record succesfully inserted ...";
header("refresh:1;index.php"); // redirects image view page after 1 seconds.
}
else
{
$errMSG = "error while inserting....";
}
}
else
{
$errMSG = "You already insert 5 rows";
}
}
}
?>
I have just edited placement of codes Answered by aidinMC and fixed some bugs in Answer of aidinMC.
Hope this will work.
这篇关于上载文件数量限制的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
