CGI Programming 101 by Jacqueline D. Hamilton

By Jacqueline D. Hamilton

Designed for clients who already understand how to construct an online web page, this ebook demonstrates the concepts for including courses known as universal Gateway Interfaces (CGIs) to their sites. Hands-on examples begin with absolutely the fundamentals corresponding to the place to write down scripts, the best way to add them and set dossier permissions, and the way to run them. extra complex issues like processing types, analyzing and writing information records, and interacting with databases also are proven in transparent examples. additionally integrated are tutorials on UNIX and the way to password-protect a website.

Show description

Read or Download CGI Programming 101 PDF

Similar javascript books

.net (September 2015)

. web is the world's best-selling journal for net designers and builders. each factor boasts pages of tutorials overlaying themes akin to CSS, Hypertext Preprocessor, Flash, JavaScript, HTML5 and net pictures written via a number of the world’s most useful internet designers and artistic layout organisations. Interviews, positive aspects and professional counsel additionally provide suggestion on search engine optimization, social media advertising, internet hosting, the cloud, cellular improvement and apps, making it the fundamental consultant for useful website design.

AIR for Javascript Developers Pocket Guide

In case you are already accustomed to HTML and JavaScript and would wish to increase computer functions utilizing Adobe AIR then this can be the proper publication for YOU. In a nutshell, there are a number of techniques to constructing AIR functions: 1. utilizing HTML and JavaScript 2. utilizing Flex three. utilizing FlashObviously, this booklet focuses as a rule at the first merchandise.

Object-Oriented Programming: with Prototypes

Object-oriented programming is a well-liked buzzword nowadays. what's the reason behind this reputation? Is object-oriented programming the answer to the software program predicament or is it only a fad? Is it an easy evolutionary step or a thorough swap in software program technique? what's the primary proposal in the back of object-orien­ ted layout?

What Every JavaScript Developer Should Know About ECMAScript 2015

The 2015 specification for the JavaScript language introduces sessions, modules, arrow services, and extra. I sat down and wrote the e-book i want to examine those new positive aspects. This booklet isn't an exhaustive record of every little thing new within the ECMAScript 2015 specification that governs the JavaScript language.

Extra info for CGI Programming 101

Example text

This is called URL-encoding, and it happens with data submitted through either GET or POST methods. cgi program as follows: $ENV{QUERY_STRING} = "fname=joe&lname=smith" The two form values are separated by an ampersand (&). You can divide the query string with Perl’s split function: my @values = split(/&/,$ENV{QUERY_STRING}); split lets you break up a string into a list of strings, splitting on a specific character. In this case, we’ve split on the “&” character. This gives us an array named @values containing two elements: ("fname=joe", "lname=smith").

The code for the subroutine is then enclosed in curly braces { }. Subroutines can be placed anywhere in your program, though for readability it’s usually best to put them at the end, after the main program code. To invoke a subroutine, enter the subroutine name and an optional list of arguments: subname; subname(arguments); You may prefix the subroutine name with an &-sign: &subname; &subname(arguments); The &-sign is optional. However, we’ll be using this syntax throughout the book to differentiate calls to subroutines we’ve written ourselves.

Gethostbyaddr is a built-in Perl function that returns the hostname for a particular IP address. However, it requires the IP address be passed to it in a packed 4-byte format. The Socket module’s inet_aton function does this for you. Let’s try it in a CGI program. cgi Detecting Browser Type The HTTP_USER_AGENT environment variable contains a string identifying the browser (or “user agent”) accessing the page. Unfortunately there is no standard (yet) for user agent strings, so you will see a vast assortment of different strings.

Download PDF sample

Rated 4.22 of 5 – based on 43 votes