PHP · Easy

Lesson 1 · On the house

Classes and properties

class, $this, public properties.

Lesson 2

Constructors and methods

__construct, typed methods, return types.

Lesson 3

Visibility and static

public/protected/private, self::, static props.

Lesson 4

Inheritance

extends, parent::, override.

Lesson 5

Interfaces and traits

interface, implements, trait, use inside class.

Lesson 6

Exceptions

try / catch / finally, throw, Exception.

Lesson 7

File I/O

file_get_contents, file_put_contents, fopen family, __DIR__.

Lesson 8

Escaping and forms

htmlspecialchars, $_POST, method=post sketch.

Lesson 9

Validation with filter

filter_var, FILTER_VALIDATE_EMAIL, filter_input, required checks.

Lesson 10

Easy capstone

Class + validated input + file write.