Prestwood IT: PHP Case Sensitivity (Yes and No) (Perl)

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From the June 2012 Issue of Prestwood eMag

Perl Beginners Corner:

PHP Case Sensitivity (Yes and No)

By Mike Prestwood

Posted 16 years ago on 11/6/2008 and updated 1/3/2009

Perl Code Snippet:

To/From Code Guide: PHP Case Sensitivity... vs. Other Languages

A flashcard from our Perl Flashcards Library

A code snippet from our Perl Code Snippets Page

Tags: PHP , Case Sensitivity

KB101540

Languages Focus: Case Sensitivity

Case sensitiviy in this case is referring to commands and variable names. For example, are "printf" and "PrintF" equivalent? Are fullname and FullName equivalent? When you create commands, operations, methods, or variables should you worry about case?

PHP Case Sensitivity

PHP is case sensitive with variable names but not with commands. Although commands are case incenstive, I prefer to use all lowercase because it's easy to type and that's what I see most PHP coders doing and I see it on PHP.Net.

Syntax Example:

All of the following are equivalent:

echo "hello<br>";

ECHO "hello<br>";

Echo "hello<br>";

eCHo "hello<br>";

...but variables are case sensitive:

$fullname = "Mike Prestwood"; //These are two...

$FullName = "Wes Peterson";   //separate varialbes.


Comments 1 Comments. Share a thought or comment...

PS_3695

Comment 1 of 1

Write it all in lowercase, right? Spider Solitaire 2 Suit is my favorite game, join the game and enjoy great challenges

Posted 36 months ago

Code Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

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Languages Focus: Case Sensitivity

PHP Case Sensitivity

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