Program to display CGI environment variables. : Environment Variables « CGI « Perl

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Perl » CGI » Environment Variables

Program to display CGI environment variables.


    



use warnings;

use strict;

use CGI qw( :standard );



print header(), start_html( "Environment Variables" );



print '<table>';



foreach my $variable ( sort( keys %ENV ) ) {

   print Tr( td( b( "$variable:" ) ), 

             td( i( $ENV{ $variable } ) ) );

}



print '</table>', end_html();

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5.	$ENV{'HTTP_USER_AGENT'}, $ENV{'SERVER_PROTOCOL'}, $ENV{'HTTP_HOST'}
6.	Get and display the browser type by referencing HTTP_USER_AGENT
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8.	CGI request-related environment variables
9.	CGI server-related environment variables
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12.	Display all values in env
13.	Determining the User Agent and Printing the Appropriate Result
14.	CGI Environment Variables (Must Be Uppercase)
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16.	An example of using QUERY_STRING.

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