Monthly Archives: June 2011

Htaccess rule creator for new to old urls

Here is a tool to create redirection rules, primarily for rewriting pages based on a query string to a nice seo url.
Created because .htaccess files are the easiest way to break an entire site.

Old Url:
New Url:

The generated rule would be:

RewriteCond %{QUERY_STRING} ^page=123&something=else$
RewriteRule .*  htaccess/rules/? [R=301,L]

It can’t handle crossing domains (yet).

Easy php output compression

Below is what I regard as a reliable method of doing gzip output compression.

One thing that normally breaks gzip compression is something printing/echoing before the ob_start (usually the result of an error, debug output, errant space somewhere etc…), this is where the ob_get_length and ob_flush come in.

The problem is that headers_sent is not a reliable way to tell if any thing has been output because it may still be in the output buffer, so if we flush it before hand problem solved.


function doPage()
   echo 'Hello World';

if (ob_get_length() > 0)

if (!headers_sent() &amp;&amp; @ob_start("ob_gzhandler"))
   //Probably a good idea to exit here as more output would break it