I'm trying to determine the user-agent from the UAS string (from an Apache header) with regular expressions kept in a MySQL database; if it doesn't match, it gets a crappy default. So I'm seeing a lot of mis-matched UAs with the crappy default, but when I try the re from the database against the mis-matched UA in a noddy script containing just the re and UAS (but which isn't a whole lot different to the real code, except for the fact that my noddy script uses a Perl literal string for UAS), it matches. In "real life", with the UAS extracted from the header record, it (sometimes) fails. Has anyone seen this before? And why does it happen?
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
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>
-
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).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|
