PHP/XML/XML Handler
Parsing a Processing Instruction
<source lang="html4strict">
<?php
function pi_handler ($p, $target, $data) {
print ($target);
print ($data);
}
$xml = "<?exec ls -l /var?><rootElement/>";
$p = xml_parser_create ();
xml_set_processing_instruction_handler ($p, "pi_handler");
if (!xml_parse ($p, $xml, true))
die (sprintf ("Parse error in %s
(%s)",
htmlspecialchars ($xml),
xml_error_string (xml_get_error_code ($p))));
else
print ("XML processing complete.\n");
xml_parser_free ($p);
?>
</source>
Using a Default Handler
<source lang="html4strict">
<?php
$i = 1; function default_handler ($p, $data) { global $i; print ("$i: default: $data\n"); $i++; } function cdata_handler ($p, $data) { global $i; print ("$i: cdata: $data\n"); $i++; } $xml = "<foo>bar</foo><?exec command ?>"; $p = xml_parser_create (); xml_set_default_handler ($p, "default_handler"); xml_set_character_data_handler ($p, "cdata_handler"); if (!xml_parse ($p, $xml, true)){ die (sprintf ("
Parse error in%s
(%s)", htmlspecialchars ($xml), xml_error_string (xml_get_error_code ($p)))); } xml_parser_free ($p);
?>
</source>
XML Cdata handler
<source lang="html4strict">
<?php
function cdata_handler ($parser, $data) { print ($data); } $xml = "<para>some character data</para>"; $parser = xml_parser_create (); xml_set_character_data_handler ($parser, "cdata_handler"); if (xml_parse ($parser, $xml, true)) print ("Your XML document is well-formed."); else print ("Your XML document is not well-formed."); xml_parser_free ($parser);
?>
</source>