How to add file upload functionality to WordPress plugin
Introduction:
WordPress is a very popular open source content management system with its flexibility and scalability Many website developers choose to use it. One of the powerful features is the ability to extend WordPress functionality through plugins. In this article, we will explain how to add file upload functionality to a WordPress plugin and provide corresponding code examples.
My Plugin Settings
In this code, we first add a new tab to WordPress using theadd_options_page
function Set up the page and then use themy_plugin_settings_page
function to add a form to the tab page. The form contains a file selection input box and an upload button.
In this code, we first check whether there is a file uploaded. Then, use thewp_upload_dir
function to get the path to the WordPress upload directory and themove_uploaded_file
function to move the file from the temporary location into the upload directory.
File URL: ' . $file_url . ''; echo 'File Type: ' . $file_type['type'] . '
'; echo 'File Size: ' . $file_size . ' bytes
'; } } add_action('admin_notices', 'my_plugin_show_file_info'); ?>
In this code, we first get the path of the uploaded file, and then use thefile_exists
function to check whether the file exist. If the file exists, we use thewp_check_filetype
function to get the file's type and display the file's URL, type, and size on the plugin settings page.
Summary:
Through this article, we learned how to add file upload functionality to WordPress plugins. We started by creating a new WordPress plugin and added a file upload form to the plugin settings page. We then wrote code to handle the file upload and save the file, and finally displayed the uploaded file information in the plugin settings page. This example can help us understand how to extend the functionality of WordPress plugins while improving our own development skills.
The above code example is just a basic demonstration. In actual development, more logic and verification may need to be added to ensure the security and reliability of the file upload function. I hope this article will be helpful for you to add file upload function when developing WordPress plug-in.
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