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Scope and global variables

Scope and global variables: PHP with MySQL Essential Training (2013)
Scope and global variables: PHP with MySQL Essential Training (2013)

In PHP, the concept of variable scope means that variables are only accessible within their context. There are two main scopes -- global and local. This video in the PHP with MySQL training demonstrates scope and global variables using a simple PHP program. Also, learn how to check if a variable is available using the isset() function and how to work around scoping issues using the keyword global.

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Skill Level Beginner
14h 32m
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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.

Q: This course was updated on 5/20/2015. What changed?

A: We added one movie called "Changing the document root in Yosemite," which helps the Mac installation run more smoothly.

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