chmod

php-chmod is a PHP library for easily changing file/directory permissions recursively.

0xShell is a powerful web server management tool designed for file management, server information gathering, and more. Easily handle your server with intuitive and secure functionalities.

Library to validate symbolic and octal modes used by unix chmod program

Another way to deal with volumes and user permissions. Use the USER command in your Dockerfile

Ionitium - Full-stack PHP framework - Filesystem core

A lightweight, self-hosted, single-file PHP web-based file manager with built-in authentication, syntax highlighting, archive support, and full file system management - deployable in minutes.

Detailed explanation of a PHP web shell, its functionalities, and how it can be used for file management, server control, and more.

A WordPress plugin by Teck Global to check and fix file and folder permissions in the WordPress root directory.

Different "exec" PHP commands for download, zip, unzip and directory permission. Sometimes we don't have access to cPanel then we can use below commands.

One PHP file to reset WordPress permissions to 755/644 without SSH or terminal — fixes Elementor not loading, 403 Forbidden, "Could not create directory" on shared hosting (cPanel, FTP).