How Evil is If?

CheezItMan nginx-forum at
Fri May 25 05:51:54 UTC 2012

In my wordpress Multisite config, I have the below lines.  I've read
if-is-evil and so I'm curious if these ifs need to be replaced and with


# For multisite:  Use a caching plugin/script that creates symlinks to
the correct subdirectory structure to get some performance gains.
set $cachetest
if ($uri ~ /$) {
        set $cachetest "";
if (-f $cachetest) {
        # Rewrites the URI and stops rewrite processing so it doesn't
start over and attempt to pass it to the next rule.
        rewrite ^ /wp-content/cache/ms-filemap/${host}${uri} break;

if ($uri !~ wp-content/plugins) {
        rewrite /files/(.+)$ /wp-includes/ms-files.php?file=$1 last;

# Uncomment one of the lines below for the appropriate caching plugin
(if used).
# include global/wordpress-ms-subdir-wp-super-cache.conf;
# include global/wordpress-ms-subdir-w3-total-cache.conf;

# Rewrite multisite '.../wp-.*' and '.../*.php'.
if (!-e $request_filename) {
        rewrite ^/[_0-9a-zA-Z-]+(/wp-.*) $1 last;
        rewrite ^/[_0-9a-zA-Z-]+(/.*\.php)$ $1 last;


Posted at Nginx Forum:,226819,226819#msg-226819

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