-Checking- {sCity}/{sCategory} --> #^/([a-z]{1})/(.+?)/(.+?)(?:/|$)# : /a/5027650/barter_3/view,gallery--<pre>Array
(
    [0] => /a/5027650/barter_3/
    [1] => a
    [2] => 5027650
    [3] => barter_3
)
</pre><!-- 0.00186610221863 seg. -->