-Checking- {sCity}/{sCategory} --> #^/([a-z]{1})/(.+?)/(.+?)(?:/|$)# : /a/4101787/art-collectibles/view,list--<pre>Array
(
    [0] => /a/4101787/art-collectibles/
    [1] => a
    [2] => 4101787
    [3] => art-collectibles
)
</pre><!-- 0.00263595581055 seg. -->