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Lesson 4: PHP Language

Today we’ll dig a little deeper into the PHP language, to see how you can control which

of your statements are actually executed, and how often.

Today’s Tasks

Watch a video: Welcome to PHP Live Lesson 41.

Download today’s code: day4code.zip (18KB)2.

Read an article: PHP Conditional Statements

PHP, just like any other programming language, provides facilities that enable you to

affect the flow of control. That is, the language contains special statements that you

can use to deviate from the one-after-another execution order that has dominated

our examples so far. Such statements are called control structures. The most basic,

and most often used, control structure is the if statement.

3.

Read an article: PHP Loops

There are two kinds of loops in PHP: while loops and for loops. Loops, like

conditional statements, give you control over whether or not a group of statements

is executed, but in addition you get to control how many times they are executed.

4.

Watch a video: Hiding the Seams5.

Lessons

Week 1Lesson 1: PHP & MySQL

Lesson 2: Your First Database

Lesson 3: Introducing PHP

Lesson 4: PHP Language

Lesson 5: Recorded Q&A

Week 2Lesson 6: Displaying MySQL Content

Lesson 7: Adding and Removing

Content with PHP

Lesson 8: Database Design: Multi-table

Queries

Lesson 9: Database Design: Complex

Relationships

Lesson 10: Recorded Q&A

Week 3Lesson 11: Structured PHP

Programming

Lesson 12: A Content Management

System (#1)

Lesson 13: A Content Management

System (#2)

Lesson 14: Sessions and Access

Control

Lesson 15: Recorded Q&A

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Watch a video: PHP Templates6.

Read an article: Controllers and Templates

What’s nice about using include statements to load your PHP template files is that

you can have multiple include statements in a single PHP script, and have it display

different templates under different circumstances!

7.

Join a Discussion: Any questions?

We covered a ton of stuff today; no doubt you found some detail or other confusing.

Hop into the private course forum and post your questions, so that I can be sure to

cover any common points of confusion in tomorrow’s Live Q&A.

8.

That’s all for Lesson 4! Next up is Recorded Q&A.

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