New Feature: Playlist Center! Pick a topic and let our playlists guide the way.

Start learning with our library of video tutorials taught by experts. Get started

PHP with MySQL Essential Training
Illustration by Don Barnett

MySQL introduction


From:

PHP with MySQL Essential Training

with Kevin Skoglund

Video: MySQL introduction

We've learned enough PHP by now that we can build dynamic websites. We can build pages that link to other pages, web forms that submit data, and even access cookies to remember user data from page to page. You can build a pretty good website using only these tools. You can even have features like user log ins. But as your site complexity increases, you are going to reach the limits of what you can do with just PHP alone. And quickly, you'll discover that adding a database makes a lot of sense. A database is going to allow you to both read and write data. Mostly with PHP so far, we have been reading data that we had coded ahead of time.
Expand all | Collapse all
  1. 4m 8s
    1. Welcome
      1m 0s
    2. Using the exercise files
      3m 8s
  2. 15m 6s
    1. What is PHP?
      3m 52s
    2. The history of PHP
      2m 51s
    3. Why choose PHP?
      4m 10s
    4. Installation overview
      4m 13s
  3. 54m 53s
    1. Overview
      2m 33s
    2. Working with Apache Web Server
      6m 56s
    3. Changing the document root
      7m 24s
    4. Enabling PHP
      6m 16s
    5. Upgrading PHP
      3m 30s
    6. Configuring PHP
      10m 3s
    7. Installing MySQL
      5m 46s
    8. Configuring MySQL
      7m 24s
    9. Text editor
      5m 1s
  4. 31m 25s
    1. Overview
      3m 27s
    2. Installing WampServer
      5m 46s
    3. Finding the document root
      2m 24s
    4. Configuring PHP
      8m 12s
    5. Configuring MySQL
      5m 45s
    6. Text editor
      5m 51s
  5. 19m 12s
    1. Embedding PHP code on a page
      6m 43s
    2. Outputting dynamic text
      5m 55s
    3. The operational trail
      2m 27s
    4. Inserting code comments
      4m 7s
  6. 1h 18m
    1. Variables
      7m 50s
    2. Strings
      4m 38s
    3. String functions
      8m 54s
    4. Numbers part one: Integers
      6m 27s
    5. Numbers part two: Floating points
      5m 25s
    6. Arrays
      10m 0s
    7. Associative arrays
      6m 37s
    8. Array functions
      6m 33s
    9. Booleans
      3m 50s
    10. NULL and empty
      5m 15s
    11. Type juggling and casting
      8m 27s
    12. Constants
      4m 43s
  7. 27m 37s
    1. If statements
      6m 0s
    2. Else and elseif statements
      4m 16s
    3. Logical operators
      7m 30s
    4. Switch statements
      9m 51s
  8. 42m 15s
    1. While loops
      8m 41s
    2. For loops
      5m 59s
    3. Foreach loops
      8m 16s
    4. Continue
      8m 28s
    5. Break
      4m 8s
    6. Understanding array pointers
      6m 43s
  9. 37m 25s
    1. Defining functions
      8m 25s
    2. Function arguments
      5m 32s
    3. Returning values from a function
      7m 33s
    4. Multiple return values
      4m 53s
    5. Scope and global variables
      6m 2s
    6. Setting default argument values
      5m 0s
  10. 20m 18s
    1. Common problems
      3m 47s
    2. Warnings and errors
      8m 36s
    3. Debugging and troubleshooting
      7m 55s
  11. 57m 57s
    1. Links and URLs
      5m 33s
    2. Using GET values
      5m 35s
    3. Encoding GET values
      8m 41s
    4. Encoding for HTML
      9m 26s
    5. Including and requiring files
      7m 40s
    6. Modifying headers
      6m 45s
    7. Page redirection
      6m 43s
    8. Output buffering
      7m 34s
  12. 1h 3m
    1. Building forms
      7m 28s
    2. Detecting form submissions
      5m 59s
    3. Single-page form processing
      7m 57s
    4. Validating form values
      10m 40s
    5. Problems with validation logic
      9m 54s
    6. Displaying validation errors
      7m 23s
    7. Custom validation functions
      6m 28s
    8. Single-page form with validations
      7m 25s
  13. 28m 5s
    1. Working with cookies
      2m 49s
    2. Setting cookie values
      5m 55s
    3. Reading cookie values
      6m 1s
    4. Unsetting cookie values
      4m 51s
    5. Working with sessions
      8m 29s
  14. 48m 39s
    1. MySQL introduction
      6m 43s
    2. Creating a database
      7m 41s
    3. Creating a database table
      7m 42s
    4. CRUD in MySQL
      5m 48s
    5. Populating a MySQL database
      7m 32s
    6. Relational database tables
      6m 40s
    7. Populating the relational table
      6m 33s
  15. 56m 4s
    1. Database APIs in PHP
      4m 51s
    2. Connecting to MySQL with PHP
      7m 45s
    3. Retrieving data from MySQL
      8m 47s
    4. Working with retrieved data
      6m 12s
    5. Creating records with PHP
      6m 58s
    6. Updating and deleting records with PHP
      9m 6s
    7. SQL injection
      3m 5s
    8. Escaping strings for MySQL
      6m 45s
    9. Introducing prepared statements
      2m 35s
  16. 35m 58s
    1. Blueprinting the application
      7m 19s
    2. Building the CMS database
      5m 14s
    3. Establishing your work area
      4m 38s
    4. Creating and styling the first page
      4m 22s
    5. Making page assets reusable
      6m 36s
    6. Connecting the application to the database
      7m 49s
  17. 32m 49s
    1. Adding pages to the navigation subjects
      5m 58s
    2. Refactoring the navigation
      6m 7s
    3. Selecting pages from the navigation
      6m 2s
    4. Highlighting the current page
      5m 26s
    5. Moving the navigation to a function
      9m 16s
  18. 1h 45m
    1. Finding a subject in the database
      9m 48s
    2. Refactoring the page selection
      10m 52s
    3. Creating a new subject form
      6m 55s
    4. Processing form values and adding subjects
      11m 20s
    5. Passing data in the session
      9m 16s
    6. Validating form values
      9m 40s
    7. Creating an edit subject form
      8m 30s
    8. Using single-page submission
      7m 44s
    9. Deleting a subject
      9m 44s
    10. Cleaning up
      10m 37s
    11. Assignment: Pages CRUD
      4m 30s
    12. Assignment results: Pages CRUD
      6m 10s
  19. 39m 26s
    1. The public appearance
      8m 52s
    2. Using a context for conditional code
      11m 37s
    3. Adding a default subject behavior
      6m 9s
    4. The public content area
      5m 51s
    5. Protecting page visibility
      6m 57s
  20. 1h 3m
    1. User authentication overview
      4m 3s
    2. Admin CRUD
      8m 41s
    3. Encrypting passwords
      7m 26s
    4. Salting passwords
      5m 42s
    5. Adding password encryption to CMS
      11m 54s
    6. New PHP password functions
      3m 13s
    7. Creating a login system
      11m 28s
    8. Checking for authorization
      5m 48s
    9. Creating a logout page
      5m 40s
  21. 2m 4s
    1. Next steps
      2m 4s

Watch this entire course now—plus get access to every course in the library. Each course includes high-quality videos taught by expert instructors.

Become a member
please wait ...
PHP with MySQL Essential Training
14h 24m Beginner Jun 04, 2013

Viewers: in countries Watching now:

PHP is a popular, reliable programming language at the foundation of many smart, data-driven websites. This comprehensive course from Kevin Skoglund helps developers learn the basics of PHP (including variables, logical expressions, loops, and functions), understand how to connect PHP to a MySQL database, and gain experience developing a complete web application with site navigation, form validation, and a password-protected admin area. Kevin also covers the basic CRUD routines for updating a database, debugging techniques, and usable user interfaces. Along the way, he provides practical advice, offers examples of best practices, and demonstrates refactoring techniques to improve existing code.

Topics include:
  • What is PHP?
  • Installing and configuring PHP and MySQL
  • Exploring data types
  • Controlling code with logical expressions and loops
  • Using PHP's built-in functions
  • Writing custom functions
  • Building dynamic webpages
  • Working with forms and form data
  • Using cookies and sessions to store data
  • Connecting to MySQL with PHP
  • Creating and editing database records
  • Building a content management system
  • Adding user authentication
Subjects:
Developer Servers Programming Languages Web Development
Software:
MySQL PHP
Author:
Kevin Skoglund

MySQL introduction

We've learned enough PHP by now that we can build dynamic websites. We can build pages that link to other pages, web forms that submit data, and even access cookies to remember user data from page to page. You can build a pretty good website using only these tools. You can even have features like user log ins. But as your site complexity increases, you are going to reach the limits of what you can do with just PHP alone. And quickly, you'll discover that adding a database makes a lot of sense. A database is going to allow you to both read and write data. Mostly with PHP so far, we have been reading data that we had coded ahead of time.

Writing data can be done with just PHP alone, but the process is more complicated than it is to just set up a database. Databases also let you store more data, keep it better-organized, they're faster to access the data. And it's much easier to manipulate the data, especially if we want to manipulate a lot of data all at the same time. And perhaps most importantly, databases allow us to relate data to other data. That's why we often refer to them as relational databases. It's an important aspect, the fact that we have relationships, and we can work with our data in complex ways. And the database that we'll be using is going to be MySQL. MySQL is open source and free just like PHP.

You can use other databases with PHP, almost any database you want. You just have to change the way that you connect to the database. But we're going to be using MySQL because it's easy to use. It's very popular and you're going to find lot's of support for it out there if you run into problems. And it also provides a good introduction to many common database concepts that you're going to find in any database that you use. If you've never worked with a database before chances are that you have worked with a spreadsheet like Microsoft Excel. And you've seen people put data in there, that's not just numbers that they're adding up. They will put columns like first name and last name and so on. A database is similar to this in that it has columns and rows that are populated with data.

A spreadsheet page is what we would call a database table. And you can have multiple tables in the same way many spreadsheets often lets you have different worksheets that you can switch between. The spreadsheet columns are the table columns and those are what define what data will be stored. For example first name, last name, city and so on. The rows are individual records. So if I have a database table that has 20 customers in it, then I have 20 rows. Each row has data in each of the columns. Now, while this can be a useful analogy, databases are not spreadsheets. A database can define and traverse relationships between tables. That's that relational aspect again.

It's very powerful. Spreadsheets don't give you that. The other big difference is that, when working with databases, we're going to be issuing commands in order to interact with the database. With the spreadsheet, we have it all laid out in front of us in a visual medium where we can see all of those tables and rows and columns. Databases, we're not going to have that. We're going to be working with subsets of the data all the time. And we can ask it to show us some of that information. But we're going to be issuing commands to pull back bits of the data or issuing commands to manipulate parts of the data. And perhaps, it goes without saying, that spreadsheets are optimized for adding numbers, that's what they do best.

Databases are optimized for working with data and that's what they do best. Let's review some of the common database terms that we're going to be using. So that you'll recognize them when I use them and make sure we're all on the same page about their meaning. The first, of course, is just database. We can have several databases running in MySQL at the same time. A database is a set of tables. And each database will contain its own set of tables. And different databases don't interrelate. So we'll typically have one database for one application. So we build our web application. It's going to connect to one and only one database.

And we'll be building a CMS for a fictional company called Widget Corp. And access permissions to our data are typically granted at the database level. Next, we have our table. A database is a set of tables, so a table is going to be a set of columns and rows, just like we saw when we used the spreadsheet metaphor. Now, each table is going to contain one type of information. That type is a single building block of our web application. And it's going to be a plural noun. So for example products, customers, orders, countries, students, books, transactions, those are good examples of nouns that would be in our application.

And notice that they're all plural because our table is going to be a container holding many of these things. And the nouns don't have to be concrete, they can represent more abstract ideas like favorites, or settings. And where with our database is they don't interrelate, our tables very much will interrelate. We're going to want to create relationships between our tables. Next we have column. A column is a set of data of a single simple type. We saw that in the spreadsheet example. So we have first name, last name, email password, and columns have types so we have certain kinds of data that goes in certain kinds of columns.

So strings go into the strings columns, integers go into the integers column and so on. We also have rows, that's a single record of data. So for example, I might have a row that's Kevin, Skoglund, ks@email.com and secret that corresponds to column types that list in the example bar. And then last of all, we have a field. And a field is the intersection of a column and a row. So for example, in the first name column, in the field for the user Kevin, I have the data, Kevin. So the field is actually the intersection between the two. Now, field is often used interchangeably with column. And you'll very often hear me flip the two around. Don't let that throw you but technically speaking a field is an intersection between a row and a column.

The next important term to know about is index. Index is going to be a data structure on a table that is going to increase the speed of look ups in that table. It's part of what makes data bases really suited to work with data is the fact we have something like this that can speed up our access. It works a lot like the index at the back of a book. You thumb to the index, you look up the reference that you're looking for, it tells you what page, and go directly to that page. Indexes work the same way. And then we have this idea of a foreign key. And that's going to be a table column whose values are going to reference the rows that are in another table. So this is where we're going to create our relationships. This is how we'll create relational databases is by using foreign keys. We'll get to this a little more when we talk about creating relational tables. I wanted to at least introduce the term to you here. And then last of all, I want us to make sure that we understand what CRUD means. CRUD is an acronym that stands for the four most basic operations that we do with databases.

So we have create, read, update, and delete. And together, these are the four most basic operations that we perform with databases. We will create new rows in our database tables, we'll read back data, we'll update the data, and we'll delete data from it. So if you hear me say, we're going to take care of the CRUD now, what I mean is that we're going to write the PHP code that is going to allow us to perform these four basic operations. Then we're going to learn how to do all four of those but first we need to go to MySQL and create our database.

Find answers to the most frequently asked questions about PHP with MySQL Essential Training.


Expand all | Collapse all
please wait ...
Q: This course was revised on 6/4/2013. What changed?
A: The old version of this course was 6 years old and it was time for a complete revision, using PHP 5.4. (The tutorials will work with any version of PHP and covers any differences you might encounter). The author has also added updated installation instructions for Mac OS X Mountain Lion and Windows 8. The topics and end project are the same, but the code is slightly different. It also addresses frequently asked questions from the previous version.
 
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.
Upgrade now


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ.

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

join now Upgrade now

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed PHP with MySQL Essential Training.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferencesfrom the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Are you sure you want to delete this note?

No

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.