phpCF - Configuration
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Here I will try to explain the configuration directives for phpCF.
Config file: phpCF.config.php

General Configuration
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$SPAM_THRESHOLD:
    This variable contains the maximum number of points you want
    to allow a text to score before phpCF deems that it's spam.

$CACHE_DIR:
    Directory that phpCF should use as cache (for stuff like blacklists, etc.)
    This directory MUST be writable by the web server but shouldn't be
    accessible from the web. Either moving it out of the web root or
    restricting access is advised.

$RULES_DIR:
    The directory phpCF should look for rules definitions in. This directory
    must be readable by the web server, but should not be accessible from the
    web. Either moving it out of the web root or restricting access is advised.

$NET_ALLOWED:
    Tells phpCF whether or not it's allowed to utilize resources on the
    internet when trying to determine whether or not content is spam.
    Disabling this will most likely speed up run-time a great deal, but will
    also dramatically lower the chances of identifying spam correctly.
    (Caches and rules won't be updated automatically anymore.)