ผมทำ menu li แยกไฟล์กับไฟล์เว็บ แล้ว include มาใช้...

<?php echo $_SERVER['REQUEST_URI']; ?>

				<li><a class="active color7" href="other.html">Home</a></li>
				<li><a class="color7" href="other.html">Category</a></li>

document.getELementById("menuHome").style.backgroundColor = "blue";

www.example.com/test.html "URI"

<?php 
if($_SERVER['REQUEST_URI'] == '/test.html')
{
     echo "<li><a class=\"active color7\" href=\"test.html\">test</a></li>";
}else{
     echo "<li><a class=\"color7\" href=\"test.html\">test</a></li>";
}
 ?>