Fast CGI (spawn-fcgi / php-cgi) crashes/dies/hangs

Denis Filimonov denis at
Wed Dec 9 05:36:50 MSK 2009

You make it sound like it a problem of nginx or php-fcgi while, in fact, it's 
a bug (yes, a bug, not a "compatibility issue") of Wordpress.
Enough trolling, go fix it and move on already!

On Tuesday 08 December 2009 21:21:18 nerdgrind wrote:
> Gentlemen,
> I respect your'e opinions, but for all you're heated desperation to defend
>  php-fcgi you may have forgotten this thread was started by someone who
>  found php-fcgi to be unstable, and he hasn't been able to find a solution.
>  I found one that worked for me when php-fcgi failed. Offering a solution
>  to someone that results in the same failure doesn't seem to be a solution
>  to me.
> Perhaps someone here could give a detailed solution as to how miradev might
>  solve his problem. Kind of like a how-to explanation. We're all here to
>  help each other.
> I don't want to anyone coming here for help only offered one possibility,
>  when something else might be better suited to their situation and needs,
>  which is why I posted an alternative.
> Apache may not be on the most loved list here, but it can work where
>  php-fcgi fails. Let's not ignore this alternative when someone is ready to
>  switch from Nginx back to Apache, as even the author of WP Super Cache did
>  just last week. Insisting that php-fcgi is the only way to serve PHP will
>  slow the adoption of Nginx, because it doesn't offer support for PHP
>  itself.
> In fact, Wordpress itself has a problem when php-fcgi is used rather than
>  Apache as the backend to serve PHP
> When WordPress detects that FastCGI PHP SAPI is in use, it disregards the
>  redirect status code passed to wp_redirect. Thus, all 301 redrects become
>  302 redirects which may not be good for SEO. The plugin overrides
>  wp_redirect when it detects that nginx is used.
> When WordPress detects that mod_rewrite is not loaded (which is the case
>  for nginx as it does not load any Apache modules) it falls back to
>  PATHINFO permalinks in Permalink Settings page. nginx itself has built-in
>  support for URL rewriting and does not need PATHINFO permalinks. Thus,
>  when the plugin detects that nginx is used, it makes WordPress think that
>  mod_rewrite is loaded and it is OK to use pretty permalinks.
> There is also an extensive additional configuration that needs to be done
>  to avoid problems.
> I've never heard anyone hear discuss these issues, which means a lot of
>  people might be losing out on a lot of traffic that could be coming from
>  search engines because of an SEO problem caused by an incompatibility
>  between php-fcgi and Wordpress.
> Using Apache as a backend eliminates this problem.
> Like many of you, I have had my own experiences, and I now have a multitude
>  of solutions to fit different situations. Although I don't know what
>  platform miradev uses to serve his web sites, if it is Wordpress then
>  using Apache on the backend could save him some headaches he didn't even
>  know existed.
> Posted at Nginx Forum:
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