Implementing PHP file upload using Zend framework (1)_PHP tutorial

Zend Framework is a popular PHP development framework. Using Zend Framework, you can quickly and easily implement various common functions. Here we introduce you to using the Zend framework to create a file upload function that can easily receive, confirm and process files to be uploaded.

1. Introduction

Whether it is managing videos on YouTube, sharing PowerPoint presentations on SlideShare, or updating items in an online store using the open source e-commerce platform Magento For images, we all use the web-based file upload function. But, how exactly does this feature work? How are files transferred from the local machine to the remote server? This article will walk readers through how to use the popular Zend framework to create our own PHP file upload mechanism that can easily Receive, confirm and process files for upload.

2. Configure PHP to handle file uploads

PHP itself can complete file uploads through web forms, but whether you use standard PHP code or use the Zend framework to manage files Upload, it is necessary to spend some time to detect the configuration directives that directly affect the relevant functions of PHP. These directives include:

◆file_uploads: This directive enables PHP's file upload function. By default, this directive is enabled.
◆upload_max_filesize: This directive defines the maximum size of files to be uploaded. By default, this directive is set to 2M.
◆upload_tmp_dir: This directive defines the directory where PHP temporarily stores files to be uploaded. The files will be temporarily stored here before being passed to the final destination. This directory is specified by the developer. By default, this directive will not assign a value, which means that PHP will use the system default value, for example, the temporary directory in many Linux distributions is /tmp.
◆post_max_size: Set the maximum size allowed for POST data. PHP's default post_max_size is 2M.
◆max_execution_time: Although it is not very closely related to file upload, this directive plays an important role in PHP's file upload function because it defines the execution time of the PHP script. For particularly large files, it may take a long time to be transferred to the file server, so you can consider changing the default value of this directive from 30 seconds to 60 or even 90 seconds.

3. Create a file upload form

Below we will create an example web form that can be used to browse the local computer's file system and determine the files to upload. We'll try to keep this example simple and create a file upload form that looks like Figure 1.

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