如何限制文件上传!
例如:-如果数据库已经有5个条目,则不应采用第6个条目。并显示您只能拥有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....";
}
}
}
?>
因此,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,则会显示错误。
最佳答案
+1投票给aidinMC
Answer中的aidinMC部分解决了您的问题。
aidinMC answer中有两个小错误
1)从:
袭击else:
}
else
$errMSG = "You already insert 5 rows";
endif;
2)将
if($count >= 5)
更改为if($count < 5)
$count = $data[0]['rows'];
if($count < 5)
{
更改这两个错误后,Answer的aidinMC将起作用!但是,尤其是看到Limit of uploading documents和Limit of uploading documents的注释后,它不会给出您想要的结果。
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";
}
}
}
?>
我刚刚通过Answered编辑了代码aidinMC的位置,并修复了Answer的aidinMC中的一些错误。
希望这会起作用。