eXtropia: the open web technology company
Technology | Support | Tutorials | Development | About Us | Users | Contact Us
Resources
 ::   Tutorials
 ::   Presentations
Perl & CGI tutorials
 ::   Intro to Perl/CGI and HTML Forms
 ::   Intro to Windows Perl
 ::   Intro to Perl 5
 ::   Intro to Perl
 ::   Intro to Perl Taint mode
 ::   Sherlock Holmes and the Case of the Broken CGI Script
 ::   Writing COM Components in Perl

Java tutorials
 ::   Intro to Java
 ::   Cross Browser Java

Misc technical tutorials
 ::   Intro to The Web Application Development Environment
 ::   Introduction to XML
 ::   Intro to Web Design
 ::   Intro to Web Security
 ::   Databases for Web Developers
 ::   UNIX for Web Developers
 ::   Intro to Adobe Photoshop
 ::   Web Programming 101
 ::   Introduction to Microsoft DNA

Misc non-technical tutorials
 ::   Misc Technopreneurship Docs
 ::   What is a Webmaster?
 ::   What is the open source business model?
 ::   Technical writing
 ::   Small and mid-sized businesses on the Web

Offsite tutorials
 ::   ISAPI Perl Primer
 ::   Serving up web server basics
 ::   Introduction to Java (Parts 1 and 2) in Slovak

 

introduction to web programming
What is an associative array?  
Associative Arrays add the final degree of complexity allowing ordered lists to be associated with other values. Unlike list arrays, associative arrays have index values that are not numbers. You do not reference an associative array as $associative_array_name[0] as you did for the list array. Instead, associative arrays are indexed with arbitrary scalar variables. Consider the following associative array definition:

    %CLIENT_ARRAY = ('full_name', 'Selena Sol',
                     'phone', '213-456-7890',
                     'age', '27');

In this example, we have defined the associative array %CLIENT_ARRAY to have three sets of associations.

The percent sign (%) denotes the associative array name just as the dollar sign ($) did for variables and the at sign (@) did for list arrays.

Thus, "full_name" is associated with "Selena Sol" as "age" is associated with "27". This association is discussed in terms of "keys" and "values". Each key is associated with one value. Thus, we say that the key "full_name" is associated with the value "Selena Sol".

Previous | Next | Table of Contents