PHP PDO Tutorial Part 1 - Prepared Statements - SQL Injection - Full PHP 8 Tutorial

Web Reference: PHP Double Equals == equality chart: PHP Triple Equals === Equality chart: Source code to create these images: PHP equality charts Guru Meditation Those who wish to keep their sanity, read no further because none of this will make any sense, except to say that this is how the insanity-fractal, of PHP was designed. NAN != NAN but NAN == true. The PHP 7.0 migration docs has this to say: The null coalescing operator (??) has been added as syntactic sugar for the common case of needing to use a ternary in conjunction with isset (). As of PHP 5.3: Since PHP 5.3, it is possible to leave out the middle part of the ternary operator. Expression expr1 ?: expr3 returns expr1 if expr1 evaluates to TRUE, and expr3 otherwise. As of PHP 7.0 PHP 7 has new Null Coalesce Operator. This is the same as a ternary but is also called an "isset ternary".

YouTube Excerpt: In this lesson, you will learn how to connect to the database from PHP using PHP Data Objects or in short PDO. PDO provides data access layer abstraction where common methods can be used to interact with different databases like MySQL, SQLite, and so on. You will learn about prepared statements, what SQL injection is & how it works, how to prevent SQL injection, learn about the difference between binding params by value or by reference, the difference between placeholders & named parameters, emulated prepares & so on. NOTE: If you have concerns/questions about 15:28 please watch the beginning of Part 2 of the PDO lesson, I address & explain there. This is just a debug query & to save an extra line I decided to pass an integer directly to the query. I don't recommend you do that, even though this particular example has no SQL Injection vulnerability, someone might make a mistake & introduce the vulnerability. https://www.youtube.com/watch?v=e6yLUvpcOZo SOME OF THE WAYS YOU CAN SUPPORT THE CHANNEL 👍 Smash the like button 🤝 Subscribe to the channel & turn the notifications on 💬 Post comments, any feedback is greatly appreciated ⭐ Become a Patreon: https://www.patreon.com/programwithgio THANK YOU! LESSON 2.30 Course Outline - https://github.com/ggelashvili/learnphptherightway-outline Course Playlist - https://www.youtube.com/playlist?list=PLr3d3QYzkw2xabQRUpcZ_IBk9W50M9pe- RESOURCES https://www.php.net/manual/en/book.pdo.php https://www.php.net/manual/en/pdo.connections.php https://www.php.net/manual/en/pdo.error-handling.php https://www.php.net/manual/en/class.pdo.php https://www.php.net/manual/en/class.pdostatement.php https://www.php.net/manual/en/pdo.constants.php https://www.php.net/manual/en/ref.pdo-mysql.php https://github.com/php/php-src/blob/master/ext/pdo/pdo_stmt.c#L319 CHAPTERS 00:00 - Intro 01:12 - Install/enable PDO MySQL 02:45 - PDO connection 05:52 - Error modes 06:34 - Run queries & fetch data 07:36 - Fetch modes 09:14 - Prepared statements & SQL injection 10:12 - SQL injection example 13:43 - Placeholders, named parameters & the difference between them 18:03 - Bind parameters using bindValue & bindParam 22:18 - Emulated prepares

In this lesson, you will learn how to connect to the database from PHP using PHP Data Objects or in short PDO. PDO provides data access layer...

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