How can I read the URL parameter in a Perl CGI program?

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Sandeep · Accepted Answer · 2016-02-22 07:26:44Z

13

For GET requests, CGI parses the specified parameters and makes them available via the param() method.

For POST requests, param() will return the parameters from the postdata, but any parameters specified via a query string in the URL itself are still available from the url_param() method. (This is can be helpful when a POST request is larger than $CGI::POST_MAX; in that case, CGI just discards the postdata, but you can arrange to have query string parameters that identify what kind of request it was to provide a good error message.)

For ISINDEX style requests, the keywords requested are available via the keywords() method, as well as via param() in a faux "keywords" parameter.

Update: in case you meant something other than the parameters by "URL Parameter", the url() method provides all or parts of the requested URL; see OBTAINING THE SCRIPT'S URL.

edited Feb 22, 2016 at 7:26

Sandeep

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answered Jun 15, 2009 at 15:21

ysth

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brian d foy · Accepted Answer · 2009-06-16 09:19:05Z

5

It's recommended that you use a URL parser such as mentioned by ysth, but if you REALLY want the raw input, it's available through the following:

for GET:

$contents = $ENV{'QUERY_STRING'};

for POST:

$contents = <STDIN>;

edited Jun 16, 2009 at 9:19

brian d foy

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answered Jun 15, 2009 at 15:28

Powerlord

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Perception · Accepted Answer · 2012-06-28 11:07:52Z

3

Try thus code:

my @names = $query->param;
foreach $name ( @names ) {
    if (  $name =~ /\_/ ) { 
        next;
    } else {
        print "<p> ".$name."\t=\t".$query->param($name) . "</p>\n";
    }
}

edited Jun 28, 2012 at 11:07

Perception

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answered Jun 27, 2012 at 20:12

avnit

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