SQL and PHP From Zero to Secure
This video teaches you SQL and PHP from the ground up — not just the syntax, but how databases actually work and how to protect real user data once you go live.
You'll start with the fundamentals: what a database actually is, what SQL is for, and the four core commands (SELECT, INSERT, UPDATE, DELETE) that cover most of what you'll ever need to do. From there, you'll see how to design a real table, connect to a MySQL database from PHP using PDO, and build a complete, working user registration and login system.
The second half focuses on security — the part most tutorials skip. You'll learn why storing plain-text passwords is dangerous, how SQL injection attacks actually work (with a live before/after example), and how prepared statements shut that vulnerability down completely. You'll also learn how password hashing and salting work under the hood, using PHP's built-in password_hash() and password_verify() functions to store and check passwords the right way — plus a rundown of common mistakes even experienced developers make.
Whether you're writing your first CREATE TABLE statement or brushing up on secure PHP practices, this video walks through everything in plain English, with visuals for every concept.
What you'll learn:
What a database and a table actually are
Core SQL: SELECT, INSERT, UPDATE, DELETE
Connecting PHP to MySQL with PDO
Why plain-text passwords are a serious risk
How SQL injection attacks work — and how to stop them
Password hashing and salting, explained simply
Secure registration and login code in PHP
Common security mistakes to avoid
Chapters
00:00 Intro — What You'll Learn
00:18 1. What Is a Database?
00:58 2. What Is SQL?
01:26 3. Structuring the Database (CREATE TABLE)
02:04 4. SQL in Action: CRUD (SELECT / INSERT / UPDATE / DELETE)
02:32 5. Seeing the Data (Visualizing a Table)
02:50 6. Connecting PHP to Your Database (PDO)
03:22 7. The Plaintext Password Vulnerability
03:55 8. The SQL Injection Vulnerability
04:31 9. Defending with Prepared Statements
05:01 10. Salting and Hashing Explained
05:37 11. Secure Registration in PHP
06:09 12. Secure Login Verification
06:47 13. Common Mistakes to Avoid
07:23 Security Checklist Recap
07:53 Outro
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