An introduction to writing PHP

Lesson 1 · On the house

Hello, PHP

<?php, echo, .php files, CLI.

Lesson 2

Variables and types

$name, strings, ints, floats, bools, null.

Lesson 3

Strings and interpolation

Quotes, concatenation ., strlen.

Lesson 4

Arrays

Indexed, associative, count, foreach preview.

Lesson 5

Operators and conditionals

== vs ===, if / elseif / else.

Lesson 6

Loops

for, while, foreach.

Lesson 7

Functions

function, parameters, return, defaults.

Lesson 8

Superglobals sketch

$_GET, $_POST, isset.

Lesson 9

Include and require

include, require, _once, paths.

Lesson 10

Introductory capstone

Vars, array, function, echo together.