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Jan Hadáček
Asked: 2016-03-30 13:25:06 +0800 CST

Apache mod_filter + PHP (mod_php)

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I'm trying to configure my server to automatically insert a tracking code (Piwik) to all pages served. I'm using both static sites and some PHP sites. I've used the following method found on Piwik forums, which is based on mod_filter and replacements.

AddOutputFilterByType SUBSTITUTE text/html application/x-httpd-php
Substitute "s~</body>~...PIWIK CODE...</body>~ni"

However, it only works for plain HTML pages. I've tried various MIMEs for PHP, like text/php or application/x-httpd-php5, but no avail. The PHP page never gets modified by the filter, while there are no problems with HTML page.

I'm starting to think that perhaps mod_php is somehow by-passing mod_filter replacements?

apache-2.4

1 Answers

  1. The problem was that gzip was enabled. For some strange reason, it only applied to sites processed through mod_php and not those served directly. I solved it by turning off gzip:

    SetEnv no-gzip 1
AddOutputFilterByType SUBSTITUTE text/html application/x-httpd-php
Substitute "s~</body>~...PIWIK CODE...</body>~ni"

    It works as a workaround, however, gzip is useful so I would like to see another solutition without turning off gzip.

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