Erik: Copy from old, had no category, placed in Tutorials

Erik — Wed, 03 Jun 2009 02:15:10 GMT

Copy from old, had no category, placed in Tutorials

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[[Category:Tutorials]]
==How to Install Embedded Perl on Slackware 12.0==

First, I installed mod_perl: [[mod_perl|Installing Mod_Perl]].

Then, I used [[cpan|cpan]] to install Embed Perl. I ran "perl -MCPAN -e shell" and at the prompt typed "install Embperl". This prompted me for some dependencies, I had to do "install LWP" and then try "install Embperl" again. Eventually it worked.

I added these lines to the section for my virtual host in /etc/httpd/extra/httpd-vhost.conf (they could also be added in the main httpd.conf to apply to the whole server if desired):
<pre>
# PerlModule HTML::Embperl
PerlModule Embperl
<Directory /home/rgr/public_html/embperl>
SetHandler perl-script
Options ExecCGI
# PerlHandler HTML::Embperl::handler
PerlHandler Embperl::handler
</Directory>
</pre>

Note the parts that are commented out -- whose were in an online example I found, but they resulted in the "500 internal server error" message. I could see the detailed message in the apache error log, and perl was looking for HTML/Embperl.pm when it should have been looking for Embperl.pm.

After that I set up an example file (see the tutorial below) and successfully tested it.

==Tutorial on Use==

http://perl.apache.org/embperl/pod/intro/Intro.-page-3-.htm

Here is an example file I created in /home/rgr/public_html/embperl/test.pl (it actually should be in which ever directory you set to be handled via embperl in the httpd.conf file or httpd-vhosts.conf file):

<pre>
<html>
<body>
First line.<br>
[- $a = 5 -] Some stuff! [- $b = 6 if ($a == 5) -]<br>
Now for some output:<br>
[+ $a +] [+ $array[$b] +] [+ "A is $a" +]
</body>
<html>
</pre>

And here is the output of http://localhost/embperl/test.html:

<pre>
First line.
Some stuff!
Now for some output:
5 A is 5
</pre>

Note that the code with [- -] is just run. The code with [+ +] is run, and the results are used to replace that part of the html file. You can also use [! !] which is for code that should only be run once, such as function definitions. The perldoc documentation or the apache page linked above has more complete explanations and tutorials:
http://perl.apache.org/embperl/

Embedded perl - Revision history

Erik: Copy from old, had no category, placed in Tutorials