June 2005
Beginner
480 pages
10h 31m
English
Content preview from SAMS Teach Yourself Perl in 24 Hours THIRD EDITIONBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Passing Information to Your CGI Program
When a CGI program is run as the result of a form submission, the field names and values passed in from the form—called parameters—need to be processed by the CGI program. This is done with the param function.
Without any arguments, the param function returns the names of the fields being passed into the CGI program. If the CGI program was accepting the form in Listing 22.1, the param function would return body, sex, name, and submit.
With an argument, param returns the value of that parameter. For example, param('sex') would return the value of the radio buttons—either male or female—depending on which was selected.
Listing 22.2 contains a short CGI program to print these parameters.
Listing 22.2. CGI ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.