Can php get value from another page's url?

Question

I want to use jQuery to make a page partly refresh. Page b is loaded in page a. And page b has a mysql search which gets values depending on a URL rule. So is it possible for PHP to get a value from another page's url? Thanks.

page a:

<script type="text/javascript"> 
    jQuery(document).ready(function(){
        $('#pageContent').load('B.php');
    });
</script>
<div id="pageContent"></div> 

page b:

<script language="JavaScript">
    function pagination(page)
    {
        window.location = "a.php?more="+document.form.more.value;
    }
</script>
<form name="form" action="a.php" method="GET">
<input type="text" name="more" value="<? echo $_GET['more'];?>">
<input type="submit" value="Search">
</form>

Answer 1

Maybe you can try this:

<script type="text/javascript"> 
    jQuery(document).ready(function(){
        $('#pageContent').load('B.php?var1=test&var2=test');
    });
</script>
<div id="pageContent"></div> 

page B

<script language="JavaScript">
    function pagination(page)
    {

        window.location = "a.php?var1=<?php echo $_GET['var1'];?>&var2=<?php echo $_GET['var2'];?>&more="+document.form.more.value;
    }
</script>
<form name="form" action="a.php" method="GET">
<input type="text" name="more" value="<? echo $_GET['more'];?>">
<input type="submit" value="Search">
</form>