Getting star Upload Large Files in PHP

View: 391    Dowload: 0   Comment: 0   Post by: hanhga   Category: Php&mySql   Fields: Other

File has been tested

One of the most popular uses is image uploads. Your users can submit photographs from a form without resorting to FTP or other convoluted methods. HTML5 and Flash also permit drag and drop, so the operation is likely to become easier as browsers evolve.

This is where the problems can begin. Camera manufacturers continually brag that they have a larger set of megapixels than their competitors. It’s all rubbish, of course — unless you’re a professional photographer or need to print extremely large images, anything over 4MP is fairly pointless and lens quality is much more important. However, even low-end compacts have 12MP and mobile phones have more than 5MP. The result is that a typical snapshot can easily be 6MB in size.

By default, PHP permits a maximum file upload of 2MB. You can ask users to resize their images before uploading but let’s face it: they won’t. Fortunately, we can increase the limit when necessary.

Two PHP configuration options control the maximum upload size: upload_max_filesize andpost_max_size. Both can be set to, say, “10M” for 10 megabyte file sizes.

However, you also need to consider the time it takes to complete an upload. PHP scripts normally time-out after 30 seconds, but a 10MB file would take at least 3 minutes to upload on a healthy broadband connection (remember that upload speeds are typically five times slower than download speeds). In addition, manipulating or saving an uploaded image may also cause script time-outs. We therefore need to set PHP’s max_input_time and max_execution_time to something like 300 (5 minutes specified in seconds).

These options can be set in your server’s php.ini configuration file so that they apply to all your applications. Alternatively, if you’re using Apache, you can configure the settings in your application’s.htaccess file:

php_value upload_max_filesize 10M
php_value post_max_size 10M
php_value max_input_time 300
php_value max_execution_time 300

Finally, you can define the constraints within your PHP application:

ini_set('upload_max_filesize', '10M');
ini_set('post_max_size', '10M');
ini_set('max_input_time', 300);
ini_set('max_execution_time', 300);

PHP also provides a set_time_limit() function so you don’t need to set max_execution_timedirectly.

Setting the options in your PHP code is possibly more practical, since you can extend the execution time and increase the file size when your application is expecting a large upload. Other forms would revert to the default 30-second time-out and 2MB limit.

Do you have any other tips for uploading large files in PHP?

Getting star Upload Large Files in PHP

One of the most popular uses is image uploads. Your users can submit photographs from a form without resorting to FTP or other convoluted methods. HTML5 and Flash also permit drag and drop, so the operation is likely to become easier as browsers evolve.

Posted on 23-04-2016 

Comment:

To comment you must be logged in members.

Files with category

  • SimpleXML is a PHP extension that allows us to easily manipulate and get XML data

    SimpleXML is a PHP extension that allows us to easily manipulate and get XML data

    View: 232    Download: 0   Comment: 0

    Category: Php&mySql     Fields: none

    SimpleXML provides an easy way of getting an element's name, attributes and textual content if you know the XML document's structure or layout. SimpleXML turns an XML document into a data structure you can iterate through like a collection of arrays...

  • How to use the PHP download file script? Class Download PHP

    How to use the PHP download file script? Class Download PHP

    View: 146    Download: 1   Comment: 0

    Category: Php&mySql     Fields: Other

    This is my favorite PHP download script. I’ve used a different more simple method until a client wanted to be able to allow their site visitors to download a large file from a password protected directory. The PHP script works on Apache web servers...

  • Installing OCI8 & PHP 7.2 on RHEL or CentOS 6

    Installing OCI8 & PHP 7.2 on RHEL or CentOS 6

    View: 287    Download: 0   Comment: 0

    Category: Php&mySql     Fields: Other

    You’ll need to stop Apache (web server) using the following command. In any Linux commands I show in this article, it presumes you aren’t logged in as the root user, so you will need to use sudo to issue privileged commands.

  • PHP source code: get content of google search

    PHP source code: get content of google search

    View: 239    Download: 2   Comment: 0

    Category: Php&mySql     Fields: Other

    How to get the results of google search and display on your website. This PHP code can do that. Refer to the following code.

  • PHP as a Scripting Language for C#

    PHP as a Scripting Language for C#

    View: 173    Download: 0   Comment: 0

    Category: Php&mySql     Fields: none

    When creating .NET applications (including desktop and web applications), it may be useful to allow extending the application using some scripting language. The users of the application can write simple scripts to configure the application, modify...

  • How to Picking the Brains of Your Customers with Microsoft’s Text Analytics

    How to Picking the Brains of Your Customers with Microsoft’s Text Analytics

    View: 4254    Download: 0   Comment: 0

    Category: Php&mySql     Fields: Other

    With the explosion of machine learning services in recent years, it has become easier than ever for developers to create “smart apps”. In this article, I’ll introduce you to Microsoft’s offering for providing machine-learning capabilities to apps.

  • How to MySqli Tutorial PHP MySqli Extension

    How to MySqli Tutorial PHP MySqli Extension

    View: 552    Download: 0   Comment: 0

    Category: Php&mySql     Fields: Other

    PHP provides three api to connect mysql Database.

  • Make Laravel Artisan Commands

    Make Laravel Artisan Commands

    View: 523    Download: 0   Comment: 0

    Category: Php&mySql     Fields: Other

    Artisan is the command line tool used in Laravel framework. It offers a bunch of useful command that can help you develop application quickly. Apart from Artisan available commands, you can create your own custom commands to improve your workflow.

 
File suggestion for you
File top downloads
Codetitle.net - library source code to share, download the file to the community
Copyright © 2015. All rights reserved. codetitle.net Develope by Vinagon .Ltd