url Change in core php
<p>I am use core php and i want to change url.
This is my actual URL. 
<strong><em><a href="http://www.example.com/blogs/blog_single.php?title=Need-of-a-Professional" rel="nofollow">http://www.example.com/blogs/blog_single.php?title=Need-of-a-Professional</a></em></strong></p>

<p>and i want that type of url:
<strong><em><a href="http://www.example.com/blogs/Need-of-a-Professional" rel="nofollow">http://www.example.com/blogs/Need-of-a-Professional</a></em></strong></p>

<p>so what i do?</p>

<p>Please help me, How i can achieve this?</p>