Get the current column number for an XML parser in PHP

/*from  w w  w.ja  v a 2s  .c om*/
<?php
    //invalid xml file
    $xmlfile = 'test.xml';

    $xmlparser = xml_parser_create();

    // open a file and read data
    $fp = fopen($xmlfile, 'r');
    while ($xmldata = fread($fp, 4096)){
      // parse the data chunk
      if (!xml_parse($xmlparser,$xmldata,feof($fp))){
            die( print "ERROR: "
            . xml_error_string(xml_get_error_code($xmlparser))
            . "<br />"
            . "Line: "
            . xml_get_current_line_number($xmlparser)
            . "<br />"
            . "Column: "
            . xml_get_current_column_number($xmlparser)
            . "<br />");
       }
    }

    xml_parser_free($xmlparser);
?>