passing param value throughout GET method

frasco has asked for the wisdom of the Perl Monks concerning the following question:

Hi monks, I have a script (source.cgi) in which there is this piece of code:

$testo=qq(<a href="/cgi-bin/a_test/test.cgi?id=$id">$testo</a>);
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It sends the $id value to the Url and, as I hope, I should be able to retrieve the $id value in test.cgi. But unfortunately I can not. In test.cgi if I type: print "this is param: " param();, the output is: this is param: id
Thus it is evident it just prints the string between ? and =.

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Re: passing param value throughout GET method by samtregar (Abbot) on May 20, 2008 at 20:29 UTC
Furthermore, it is evident that you did not read the docs: CGI. The param() routine returns a list of available params in list context - hence ('id') in your case. If you want the value call param('id'). -sam	[reply]
Re: passing param value throughout GET method by leighsharpe (Monk) on May 21, 2008 at 05:25 UTC
You're not using param() correctly. You have passed 'id=$id' to your CGI. Therefore, you can expect param('id') to return the value contained in $id. If you had this in source.cgi: `$testo=qq(<a href="/cgi-bin/a_test/test.cgi?id=$id&fred=wombat">$testo +</a>);` [download] Then you could do something like this: `foreach(param()) { print "$_ = ".param($_)."<br>\n"; }` [download] And you would get: `id = [whatever was in $id] fred = wombat` [download] This should demonstrate the two ways to call param().	[reply] [d/l] [select]