note 43741 added to ref.xml
| From: | andrewcareatexeculinkdotcom at rn2 dot php dot net | Date: | Thu, 01 Jul 2004 20:24:57 +0000 |
| Subject: | note 43741 added to ref.xml | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-72282@lists.php.net to get a copy of this message | ||
I've been working on a similiar tree-based generator (although somewhat simpler), and I thought
that it might be helpful to a developer just starting out:
http://www.drmatta.com/new/xml/
Simplified source:
<?
$file = /*File to be parsed*/;
$elements = $stack = array();
$count = $depth = 0;
class element{
var $name = '';
var $attributes = array();
var $data = '';
var $depth = 0;
}
function start_element_handler($parser, $name, $attribs){
global $elements, $stack, $count, $depth;
$id = $count;
$element = new element;
$elements[$id] = $element;
$elements[$id]->name = $name;
while(list($key, $value) = each($attribs))
$elements[$id]->attributes[$key] = $value;
$elements[$id]->depth = $depth;
array_push($stack, $id);
$count++;
$depth++;
}
function end_element_handler($parser, $name){
global $stack, $depth;
array_pop($stack);
$depth--;
}
function character_data_handler($parser, $data){
global $elements, $stack;
$elements[$stack[count($stack)-1]]->data .= $data;
}
$xml_parser = xml_parser_create('');
xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, 0);
xml_set_element_handler($xml_parser, "start_element_handler",
"end_element_handler");
xml_set_character_data_handler($xml_parser, "character_data_handler");
if(!file_exists($file))
die("\n<p>\"$file\" does not
exist.</p>\n</body>\n</html>");
if(!($handle = fopen($file, "r")))
die("<p>Cannot open \"$file\".</p>\n</body>\n</html>");
while($contents = fread($handle, 4096))
xml_parse($xml_parser, $contents, feof($handle));
fclose($handle);
xml_parser_free($xml_parser);
echo "<hr />\n";
$depth = $offset = 0;
while(list($key_a) = each($elements)){
$depth--;
$offset = 0;
if($elements[$key_a]->depth < $depth){
while($elements[$key_a]->depth != (($elements[$key_a - $offset]->depth) - 1) || $offset ==
0){
$offset++;
if($elements[$key_a]->depth == (($elements[$key_a - $offset]->depth) - 1))
echo "<dl>\n<dt><strong>Element
Closed:</strong></dt>\n<dd>" . $elements[$key_a - $offset]->name .
"</dd>\n</dl>\n<hr />\n";
}
$depth--;
}
if($elements[$key_a]->depth == $depth && $depth != 0){
while($elements[$key_a]->depth != $elements[$key_a - $offset]->depth || $offset == 0){
$offset++;
if($elements[$key_a]->depth == $elements[$key_a - $offset]->depth)
echo "<dl>\n<dt><strong>Element
Closed:</strong></dt>\n<dd>" . $elements[$key_a - $offset]->name .
"</dd>\n</dl>\n<hr />\n";
}
$depth--;
}
$depth++;
echo "<dl>\n<dt><strong>Element:</strong></dt>\n<dd>"
. $elements[$key_a]->name . "</dd>\n</dl>\n";
echo "<dl>\n<dt><strong>Attributes:</strong></dt>\n";
if(empty($elements[$key_a]->attributes))
echo "<dd>No attributes specified</dd>\n";
else{
while(list($key_b, $value) = each($elements[$key_a]->attributes))
echo "<dd>$key_b=\"$value\"</dd>\n";
}
echo
"</dl>\n<dl>\n<dt><strong>Data:</strong></dt>\n";
if(trim($elements[$key_a]->data) == '')
echo "<dd>No data specified</dd>\n";
else
echo "<dd>" . $elements[$key_a]->data . "</dd>\n";
echo
"</dl>\n<dl>\n<dt><strong>Depth:</strong></dt>\n<dd>"
. $elements[$key_a]->depth . "</dd>\n</dl>\n<hr />\n";
$depth++;
}
$depth--;
for($i = $depth; $i >= 0; $i--){
$offset = 0;
$count = count($elements) - 1;
for($j = 0; $j <= $count; $j++){
if($elements[$count - $j]->depth == $depth){
echo "<dl>\n<dt><strong>Element
Closed:</strong></dt>\n<dd>" . $elements[$count - $j]->name .
"</dd>\n</dl>\n<hr />\n";
break;
}
}
$depth--;
}
?>
A few good tutorials on the subject of parsing XML with PHP:
http://www.zend.com/zend/art/parsing.php
http://www.sitepoint.com/article/560/
----
Manual Page -- http://www.php.net/manual/en/ref.xml.php
Edit -- http://master.php.net/manage/user-notes.php?action=edit+43741
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