PHP (Hypertext Preprocessor) is a widely used open-source server-side scripting language for web development. While PHP 5.6 has reached end-of-life, developers can still Install PHP 5.6 on Ubuntu to support dynamic websites, process forms, manage sessions, and connect to MySQL or PostgreSQL databases. Many organizations continue to rely on this version due to legacy applications or compatibility concerns. PHP also supports various extensions, making it flexible for modern use cases. This article......