Home Backend Development PHP Tutorial PHP file upload move_uploaded_file_PHP tutorial

PHP file upload move_uploaded_file_PHP tutorial

Jul 20, 2016 am 11:00 AM
file move php one time upload document article

This article will talk about PHP file upload, move_uploaded_file Here we will also use is_uploaded_file to determine whether the file is uploaded successfully. Let’s start the tutorial. ​

This article will talk about php file upload, move_uploaded_file Here we will also use is_uploaded_file to determine whether the file is uploaded successfully. Okay Let’s start the tutorial below.

A very useful aspect of PHP is the ability to manage file uploads to your server. Allowing users to upload files to your server opens up a whole can of worms, so be careful with favorable file uploads.


PHP - File Upload: H TML Form
Before you can use PHP to manage your uploads, you must first create an HTML form that allows users to select files to upload. See our HTML Form Lessons for a more in-depth study of forms.

www.111cn.cn/phper/php.html

This is a brief description of the important parts of the code above:

Yes enctype="multipart/form-data" - is required for the PHP file we are going to create to work properly.
action="uploader.php" - the name of our PHP page that will be created shortly.
method = "post" - used to inform the browser that we want to send information to this server.
input type = "hide" name = "ma... - Set the maximum allowed file size, in bytes, that can be uploaded. This security mechanism is easy to bypass and we will show a solid backup solution in P HP. We have set a maximum file size of 100KB for this example. input name="uploadedfile" -u uploadedfile is how we will access the file in our PHP script.
Save this form of code to a file and call it upload.html. If you view it in a browser it should look like this:

Display:
Select the file to upload:
After the user clicks submit, the data will be posted to the server and the user will be redirected to uploader.php. This PHP file will form the process data and do all the work.

PHP - File Upload: What is PHP?
Now that we have the right HTML form we can start coding the PHP script that is going to handle our uploads. Typically, PHP files should make the important decision for all uploads: keep the file or throw it away. Files may be thrown away for many reasons, including:

The file is too large and you don't want it on your server.
You want the person to upload the image and upload something else, like an executable file (.exe).
There is a problem with the file uploading and therefore you cannot maintain it.
This example is very simple and omits the code that would add this functionality.

PHP - file upload: u uploader.php
When the uploader.php file is executed, the uploaded file exists in a temporary storage area on the server. If the file is not moved to a different location it will be destroyed! To save precious files we are going to use the variable $_FILES associative array.

Pass the $_FILES array where PHP stores all the information in the file. There are two factors in this array that we need to understand for this example. www.111cn.cn/phper/php.html

uploadedfile -u uploadedfile is a reference to the HTML form we specified in ours. We will need this notification via the $_FILES array for the files we want to play with.
Variable $_FILES['uploadedfile']['name'] - The name contains the original path to the user-uploaded file.
Variable $_FILES [ ' uploadedfile ' ] [ ' tmp_name ' ] -t mp_name contains the path where temporary files are stored on the server. The file should exist in a temporary directory on the server with a temporary name.
Now, we can finally start writing a basic PHP script for the upload manager! Here's how we take the temporary file name, choose a permanent name, and choose a place to store the archive.

// Where the file is going to be placed

$target_path = "uploads/";

/* Add the original filename to our target path.
Result is "uploads/filename.extension" */
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);

PHP - file upload: move_uploaded_file function

Now, all we have to do is call the move_uploaded_file function and let PHP do its magic. The move_uploaded_file function needs to know 1) the path to the temporary file (check!) and 2) the path it is moved to (check!).

$target_path = "uploads/";

$target_path = $target_path . basename( $_FILES['uploadedfile']['name']);

if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
echo "The file ". basename( $_FILES['uploadedfile']['name']).
" has been uploaded";
} else{
echo "There was an error uploading the file, please try again!";
}

Please indicate when reprinting: www.111cn.cn/phper/php.html


www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/445499.htmlTechArticleThis article will talk about php file upload, move_uploaded_file Here we will also use is_uploaded_file to determine whether the file is uploaded. Success. Now let’s start the tutorial. For this article...
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

7 PHP Functions I Regret I Didn't Know Before 7 PHP Functions I Regret I Didn't Know Before Nov 13, 2024 am 09:42 AM

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

See all articles