PHP/XML/SAX
Содержание
A simple XML parser
<source lang="html4strict">
<?php $file = "contact.xml";
function startElement($parser, $name, $attrs) {
print "$name => ";
} function endElement($parser, $name) {
print "\n";
}
function characterData($parser, $value) {
print "$value
";
}
$simpleparser = xml_parser_create(); xml_set_element_handler($simpleparser, "startElement", "endElement"); xml_set_character_data_handler($simpleparser, "characterData");
if (!($fp = fopen($file, "r"))) {
die("could not open XML input");
}
while($data = fread($fp, filesize($file))) {
if (!xml_parse($simpleparser, $data, feof($fp))) {
die(xml_error_string(xml_get_error_code($simpleparser)));
}
} xml_parser_free($simpleparser); ?>
</source>
SAX parser in action
<source lang="html4strict">
<? function start_element($parser, $element_name, $element_attrs) {
switch ($element_name) {
case "KEYWORDS":
echo "Keywords
- ";
break; case "KEYWORD":echo "
break;
case "KEYWORD":
echo "</li>";
break;
}
}
function character_data($parser, $data) {
echo htmlentities($data);
} $parser = xml_parser_create(); xml_set_element_handler($parser, "start_element", "end_element"); xml_set_character_data_handler($parser, "character_data"); $fp = fopen("keyword-data.xml", "r")
or die ("Cannot open keyword-data.xml!");
while ($data = fread($fp, 4096)) {
xml_parse($parser, $data, feof($fp)) or
die(sprintf("XML ERROR: %s at line %d",
xml_error_string(xml_get_error_code($parser)),
xml_get_current_line_number($parser)));
}
xml_parser_free($parser); ?>
</source>
Turning an XML Document into an Array
<source lang="html4strict">
<html> <body> <?php
$cdata = "";
$contact_id = -1;
$contacts = null;
function start_elem ($parser, $name, $attrs) {
global $contact_id;
if ($name == "contact") {
$contact_id = $attrs["id"];
$contacts[$contact_id] = array();
}
}
function end_elem ($parser, $name) {
global $cdata, $contacts, $contact_id;
switch ($name)
{
case ("first"):
$contacts[$contact_id]["name"]["first"] = $cdata;
break;
case ("last"):
$contacts[$contact_id]["name"]["last"] = $cdata;
break;
case ("middle"):
$contacts[$contact_id]["name"]["middle"] = $cdata;
break;
case ("title"):
$contacts[$contact_id]["title"] = $cdata;
break;
case ("employer"):
$contacts[$contact_id]["employer"] = $cdata;
break;
case ("dob"):
$contacts[$contact_id]["dob"] = $cdata;
break;
}
$cdata = "";
}
function cdata ($parser, $data) {
global $cdata;
$cdata .= trim ($data);
}
$file = "contact.xml";
$parser = xml_parser_create ();
xml_parser_set_option ($parser, XML_OPTION_CASE_FOLDING, false);
xml_set_element_handler ($parser, "start_elem", "end_elem");
xml_set_character_data_handler ($parser, "cdata");
$fp = fopen ($file, "r");
if (!$fp){
die ("Couldn"t open $file for reading");
}
while ($xml_input = fread ($fp, 2048)) {
$ok = xml_parse ($parser, $xml_input, feof ($fp));
if (!$ok){
die (sprintf ("Error in $file: "%s" at line %d",
xml_error_string (xml_get_error_code ($parser)),
xml_get_current_line_number ($parser)));
}
}
xml_parser_free ($parser);
print ("\n");
print_r ($contacts);
print ("\n");
?> </body> </html>
</source>
