-Checking- {sCity}/{sCategory} --> #^/([a-z]{1})/(.+?)/(.+?)(?:/|$)# : /a/1100951/vehicles_2/view,list--<pre>Array
(
    [0] => /a/1100951/vehicles_2/
    [1] => a
    [2] => 1100951
    [3] => vehicles_2
)
</pre><!-- 0.00204205513 seg. -->