CGI and Perl Tutorials

Controlling Program Flow
Learn how to alter the flow of your Perl code using decisions and loops. This essential tutorial covers statements such as if, while, until, do, for and foreach.

Working with Files
This tutorial shows you how to create files and write to them, how to read them, how to delete them, and how to scan directories on your server. It also covers permissions and full paths, and includes a handy script for working out full paths. It also touches on loops, lists, and appending strings to variables. A lengthy tutorial but well worth reading!

Form Validation
The most reliable way to make sure your users haven't filled in your forms wrongly is to use server-side form validation. This tutorial shows how you can do this with Perl and the CGI, and introduces the concept of subroutines along the way.

Writing a Simple Form Mailer
This tutorial will show you how to build a simple form mailer script, so that visitors can send you emails from your site. Along the way we explain some new Perl concepts, including the CGI library module.

Perl, Bit by Bit
When you program, you're usually doing it at some distance from the bits and bytes that your computer understands. There never seems to be a need to think about bits. But believe it or not, learning about bits can be to your advantage for certain programming purposes. Perl provides operators for working with bits that let you leverage this knowledge.

Perl Basics
Learn the basics of Perl. Topics covered include basic syntax, variables, arrays, hashes, conditionals, loops, and module usage/installation

Build a Perl/CGI Voting System
A nice tutorial on Build a Perl/CGI Voting System.

Perl File Handling: open, read, write and close files Perl and CGI
This article describes the facilities provided for Perl file handling.

Subroutines in Perl
This tutorial shows how to create subroutines and use subroutines in Perl.

PERL and CGI Tutorial
In this tutorial we are going to learn PERL and CGI.

Database Management in PERL - DBI
The DBI is a database access module for the Perl programming language. It defines a set of methods, variables, and conventions that provide a consistent database interface, independent of the actual database being used.

Comparisons in Perl
This tutorial shows how to use simple comparisons and regular expressions in Perl.

Dates and Times in Perl
This tutorial shows how to use date and tmes in Perl.

Array Variables in Perl
This tutorial walks through using array variables in Perl.

Perl Syntax
This tutorial is an introductory look at the Perl language and its syntax.

Herong's Tutorial Notes on Perl - Part A
In this tutorial we will learn how to herong's tutorial notes on Perl - Part A.

XML::Simple Module
This tutorial describes: * Introduction to XML::Simple module. * Example Perl programs to use XML::Simple options. * Example Perl program to modify the parsed XML hash. If you need to know more about XML, please read my other book: "Herong's Notes on XML Technologies".

XML in Client and Server Communication
This tutorial describes: * Different XML client and server communication models. * XML and Socket Communication Example - GameServer.pl * XML and Socket Communication Example - GameClient.pl

SOAP::Lite Modules
This tutorial helps you understand: Quick introduction to SOAP; Overview of SOAP::Lite modules; Introduction to SOAP::Transport::TCP Module and sample SOAP server program; Introduction to SOAP::Lite and sample SOAP client program; How to the trace feature in SOAP::Lite.

SOAP::Transport::HTTP Modules
This tutorial helps you understand: What is SOAP::Transport::HTTP::Daemon module, and how to use it in a simple sample program.