Use the Zend framework to upload PHP files (1)

Zend Framework is a popular PHP development Framework. With Zend Framework, You can conveniently and quickly implement various common functions. This section describes how to use the Zend framework to create a file upload function. This mechanism can easily receive, confirm, and process files to be uploaded.

I. Introduction

Whether it's managing videos on YouTube, sharing PowerPoint presentations on SlideShare, or using the open-source e-commerce platform Magento to update product images in online stores, we all use web-based file upload. But how does this function work? How does a file be transmitted from a local machine to a remote server? This article will show you in detail how to use the popular Zend framework to create our own PHP file upload mechanism, which can easily receive, confirm, and process the files to be uploaded.

Ii. Configure PHP for processing file uploads

PHP itself can upload files through Web forms, but whether it uses standard PHP code or the Zend framework to manage file uploads, it is necessary to take some time to detect the configuration pseudoinstructions that directly affect PHP functions. These Commands include:

◆ File_uploads: This pseudocommand enables the PHP file upload function. By default, this pseudo command is enabled.
◆ Upload_max_filesize: this directive defines the maximum size of the file to be uploaded. By default, this pseudo command is set to 2 MB.
◆ Upload_tmp_dir: This pseudocommand defines the directory for PHP to temporarily store the files to be uploaded. The files will be temporarily stored in this directory before being passed into the final destination, which is specified by developers. By default, this pseudo command is not assigned a value, which means that PHP will use the default value of the system. For example, the temporary directory in many linux releases is/tmp.
◆ Post_max_size: set the maximum size allowed by POST data. The default post_max_size of php is 2 M.
◆ Max_execution_time: although it is not closely related to file upload, this pseudocommand plays an important role in the PHP file upload function because it defines the execution time of PHP scripts. It may take a long time for an extremely large file to be transmitted to the file server. Therefore, you can change the default value of this pseudocommand to 30 seconds to 60 or 90 seconds.

3. Create a file upload form

Next we will create a Web form example that can be used to browse the file system of the Local Computer and determine the file to be uploaded. We will try our best to keep this example simple, as shown in figure 1.