Master Coding Skills &
System Design.

Learn PHP inheritance — child classes extend parents, override methods, and call parent:: .

Learn PHP form handling — GET vs POST, reading $_POST data, validation, and sanitization.

A beginner introduction to OOP PHP — classes, objects, properties, methods, constructors.

Learn reading and writing files in PHP — file_get_contents, file_put_contents, fopen, fwrite.

Learn how to resolve merge conflicts — conflict markers, merge tools, and prevention.

Learn jQuery event handling — .on(), .off(), event delegation, preventing defaults, and common events like click, hover, keyup, and submit.

Learn file permissions — read/write/execute, chmod, chown, and groups.

Learn EXPLAIN FORMAT=JSON, EXPLAIN ANALYZE, and identifying bottlenecks.

Learn Python functions — def, positional and keyword arguments, default values, *args, **kwargs, and variable scope.