<?php
$file = "data.xml";
$map_array = array(
   "bold"    => "b",
   "emphasis" => "i",
   "literal"  => "tt"
);

function startelement($parser, $name, $attrs) {
   global $map_array;
   if ($htmltag == $map_array[$name]) {
       print "<$htmltag>";
   }
}

function endelement($parser, $name) {
   global $map_array;
   if ($htmltag == $map_array[$name]) {
       print "</$htmltag>";
   }
}

function characterdata($parser, $data) {
   print $data;
}

$xml_parser = xml_parser_create();
// 使用大小寫(xiě)折疊來(lái)保證我們能在元素?cái)?shù)組中找到這些元素名稱(chēng)
xml_parser_set_option($xml_parser, xml_option_case_folding, true);
xml_set_element_handler($xml_parser, "startelement", "endelement");
xml_set_character_data_handler($xml_parser, "characterdata");
if (!($fp = fopen($file, "r"))) {
   die("could not open xml input");
}

while ($data = fread($fp, 4096)) {
   if (!xml_parse($xml_parser, $data, feof($fp))) {
       die(sprintf("xml error: %s at line %d",
                   xml_error_string(xml_get_error_code($xml_parser)),
                   xml_get_current_line_number($xml_parser)));
   }
}
xml_parser_free($xml_parser);
?>