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PHP with MySQL Essential Training
Illustration by Don Barnett

Configuring MySQL


From:

PHP with MySQL Essential Training

with Kevin Skoglund

Video: Configuring MySQL

In this video, we're going to do some configuration to MySQL. Specifically, I want us to set a root password, MySQL, because by default, MySQL comes with no default password for the root user. Root user being the most powerful user on the system. The one with the most privileges inside MySQL. And it's just a good security practice to always have a default password set, so that only someone who knows that password can get access to the data that's in the database. Now you may think, well, I'm not going to be sharing this data with anyone.
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  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

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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

Configuring MySQL

In this video, we're going to do some configuration to MySQL. Specifically, I want us to set a root password, MySQL, because by default, MySQL comes with no default password for the root user. Root user being the most powerful user on the system. The one with the most privileges inside MySQL. And it's just a good security practice to always have a default password set, so that only someone who knows that password can get access to the data that's in the database. Now you may think, well, I'm not going to be sharing this data with anyone.

It's only on my personal laptop. I'm the only one who uses it. But it is a good practice, because you may end up importing some data from a production database, at some point, onto your development machine. And if someone were to come and find your laptop, or if you were to lose it, they could get access to all of the data that was on there. So I want us to go ahead and follow this best practice and set a root password for MySQL. Now the tool that we need in order to update the MySQL password is MySQL Admin, the tool that's installed with MySQL. WAMP gives you lots of nice tools here from this directory, but they don't give you one for MySQL Admin.

They do give you a way to go directly into MySQL here, MySQL console. That's kind of nice. Comes up and says enter password, and since there is no password right now, I can just hit Return and it puts me directly into MySQL. So I've logged in as the root user. I didn't have to type a password. I just simply hit Return. Now I'm in MySQL. Instead, I like to be able to enter a password. Now to do that, we're going to have to go to the console. The Command Prompt. So you want to find the Command Prompt that's going to be inside all of your programs, inside Windows System.

Command Prompt, you'll find it there. This is the command line interface to Windows. Don't be intimidated by it, we're not going to be here for very long. What we want to do, is we want to navigate to the place where MySQL Admin lives. If we just type mysqladmin on its own, it comes up and says sorry, I don't know what that is. But if we go to cd, change directory, C, that's a capital C:\wamp\bin\mysql. And then we type dir, we'll get a listing here, and this folder name will change depending on what version of MySQL you have.

Now we want to do another cd mysql, and you can actually just hit the Tab and it should auto-complete for you. If not, go ahead and type that full number out there, and that will change directories one more time and then put /bin after it. So now we're inside a place where all of the programs live for MySQL. We could actually click the dir, we can see what all those are. The one that we want is MySQL Admin. Then after it put dash u space root for the root user, and then we want to type password because that's what we want to change.

So all lower case password. We'll hit Return, and it will then come up and ask us for the new password that we want to set. So I'm going to set mine just to be secret for now, secret and it doesn't show it. It just has the bullets there instead, hit Return, confirm it, and I'll type it again, and now it's set. That's my new password that I have to type to get in. When I hit the Up arrow, and it will bring that line back up again. If we want to change it again to something different, it'll come up and it'll say oops, sorry, I needed some kind of indication that you wanted to give a password. So what we need to do is actually just go back and make a small edit to this line and put dash p, which means I will be providing a password. So it will ask me for the password, it's going to prompt me for it. But I'm just letting it know, look, it's not okay to just go with no password and then when it says enter password here.

It wants my old password, which is secret. And now it wants the new password. But I'm going to change it. I'm going to make my password johnpaulgeorgeringo. And then it will ask me to confirm it. johnpaulgeorgeringo. And now it's set. So now that's my new password for my root user. And we can confirm that by coming back over here and going into MySQL to the console.

And if we just type return this time, it says nope, sorry, no good and it closes on us. If we try it again, MySQL console. And this time I type johnpaulgeorgeringo, there I am, now I'm inside MySQL and just typing exit will get us out of there. Now there is one other thing that I want to mention to you about this. Which is that with WAMP is also included an application called PHP MyAdmin. It's a very popular way to look at your MySQL databases and to manage them by using a PHP web interface. Now we're not going to be using that as training, we're going to be using MySQL directly, using the MySQL console.

But I just want to mention that we did just break phpMyAdmin because it's not setup to use a password. If you want it to use a password, you need to go back to your command prompt, navigating to C:\wamp. And then in there if you look, you'll see there's a directory called Apps so we will also change directory into Apps. And then inside here is PHP MyAdmin with a version number after it. So we'll just use Tab to auto complete that for us. And then inside here, you'll find that there's a file all the way at the top called config.inc.php and that is where it gets its configuration. So you would edit this file and you would find the location where it has password and change that to be your new root password.

So I just wanted to mention that to you. Even though we won't be using it in this training, I didn't want to leave you with some software that we broke without giving you some direction on how to fix it.

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


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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.
 
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