What Moritz says about using a placeholder is definitely the way to go vis. avoiding SQL injection.
If you want a simple way to make it HTML safe, you can do that before you put it in the DB or after, when you take it out and want to use it in a page (depending what else is done with the data). There are lots of modules, etc, for doing this but the major issue is the < and >, and ' if you use javascript:
$string =~ s/</</g;
$string =~ s/>/>/g;
$string =~ s/'/'/g;
Hopefully you recognize what that is for. There is a chart of all HTML "escape" codes at
http://www.lookuptables.com/
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Are you posting in the right place? Check out Where do I post X? to know for sure.
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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