[xsl] Problem with <a> conversion

["ashu t" <aashut@xxxxxxxxxxxxxx>]

i am trying to convert html to wml using xslt.
when there is <a> tag in html i am trying to fetch the href of 
that and send that to my php program which is using xslt to 
convert it into wml.but it is giving error.
i tried

 <xsl:template match="div/a | center/a | p/a | ul/a | li/a | tr/a 
| td/a | th/a | table/a | font/a">
         <xsl:variable name="url">
         <xsl:value-of select="@href"/>
         </xsl:variable>
         <a 
href="http://localhost/ashu/transform.php?url=@href";>
         <xsl:value-of select="."/></a>
   </xsl:template>

   <xsl:template match="a">
       <p> <xsl:variable name="url">
          <xsl:value-of select="@href"/>
          </xsl:variable>
<a 
href="http://localhost/ashu/transform.php?url=@href";><xsl:value-of 
select="."/></a>
         </p>
   </xsl:template>

and my php program  transform.php for conversion is
<?php
  header("Content-type:text/vnd.wap.wml");
  echo("<?xml version=\"1.0\"?>");
  echo("<!DOCTYPE wml PUBLIC '-//WAPFORUM//DTD WML 1.2//EN'
  'http://www.wapforum.org/DTD/wml_1.2.xml'>");
  $th=xslt_create();
  $result=xslt_process($th,$url,'myprogram.xsl');
    if (!$result)
      {
        die(sprintf("Cannot process XSLT document [%d]: %s",
                    xslt_errno($xh), xslt_error($xh)));
      }
   print "$result";
   xslt_free($th);
?>
$url is the name of html file passed to this transform.php program 
from the first program which just ask ENTER THE URL::
and send that url to this php program for conversion.
what is the correct way to do that.
ashu t
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