xml_parser_create

marek995 at seznam dot cz (2010-09-24 11:46:17)

I created a function, which combines xml_paresr_create and all functions around.

<?php
function html_parse($file)
     {
      $array = str_split($file, 1);
      $count = false;
      $text = "";
      $end = false;
      foreach($array as $temp)
       {
        switch($temp)
         {
          case "<":
           between($text);
           $text = "";
           $count = true;
           $end = false;
           break;
          case ">":
           if($end == true) {end_tag($text);}
           else {start_tag($text);}
           $text = "";
           break;
          case "/":
           if($count == true) {$end = true;}
           else {$text = $text . "/";}
           break;
          default:
           $count = false;
           $text = $text . $temp;
         }
       }
     }
?>
The input value is a string.
It calls functions start_tag() , between() and end_tag() just like the original xml parser.

But it has a few differences:
  - It does NOT check the code. Just resends values to that three functions, no matter, if they are right
  - It works with parameters. For example: from tag <sth b="42"> sends sth b="42"
  - It works wit diacritics. The original parser sometimes wrapped the text before the first diacritics appearance.
  - Works with all encoding. If the input is UTF-8, the output will be UTF-8 too
  - It works with strings. Not with file pointers.
  - No "Reserved XML name" error
  - No doctype needed
  - It does not work with commentaries, notes, programming instructions etc. Just the tags

definition of the handling functions is:

<?php
function between($stuff) {}
?>

No other attributes

juanhdv at NOSPAM dot divvol dot org (2007-12-05 12:08:09)

In PHP 5, when including in your xml file the definition '<?xml version="1.0" encoding="ISO-8859-1" ?>',   I'd also recommend adding the option below:
 
xml_parser_set_option($xml_parser,XML_OPTION_TARGET_ENCODING, "ISO-8859-1").

It works fine!

If your enconding is 'UTF-8', just replace 'ISO-8859-1'.

(2006-04-19 07:42:51)

I'd also recommend adding the option below
xml_parser_set_option($parser,XML_OPTION_SKIP_WHITE,1);

Tobbe (2005-05-25 06:01:32)

The above "XML to array" code does not work properly if you have several tags on the same level and with the same name, example:
<currenterrors>
<error>
<description>This is a real error...</description>
</error>
<error>
<description>This is a second error...</description>
</error>
<error>
<description>Lots of errors today...</description>
</error>
<error>
<description>This is the last error...</description>
</error>
</currenterrors>
It will then only display the first <error>-tag.
In this case you will need to number the tags automatically or maybe have several arrays for each new element.

dma05 at web dot de (2005-04-27 14:54:26)

xml_parser_create () on php5 sometimes detects the wrong input format for me -- for example, sometimes when i try to parse data that has been fetched from a databse by my script and that only contains a handful of special ISO-8859-1 characters, it seems to think the input was something else and xml_parse() chokes on things like umlauts.

the only reason i was able to figure out so far would be that -- unlike my data files -- the xml data generated by my script doesn't contain the <?xml  [...] encoding="..." ?> definition. every data source with that definition seemed just fine; it's kinda odd that it worked *sometimes* without it *shrugs*.
no matter what the reason, using utf8_encode () on the string made it work, and prepending '<?xml version="1.0" encoding="ISO-8859-1" ?>' worked as well.

this problem shouldn't occur in php4, since there you would specify the input encoding along with the output encoding.

php at stock-consulting dot com (2005-02-21 02:47:25)

Even though I passed "UTF-8" as encoding type PHP (Version 4.3.3) did *not* treat the input file as UTF-8. The input file was missing the BOM header bytes (which may indeed be omitted, according to RFC3629...but things are a bit unclear there. The RFC seems to make mere recommendations concering the BOM header). If you want to sure that PHP treats an UTF-8 encoded file correctly, make sure that it begins with the corresponding 3 byte BOM header (0xEF 0xBB 0xBF)

jcalvert at gmx dot net (2004-04-03 10:39:43)

To maintain compatibility between PHP4 and PHP5 you should always pass a string argument to this function. PHP4 autodetects the format of the input if you leave it out whereas PHP5 will assume the format to be ISO-8859-1 (and choke on the byte order marker of UTF-8 files).

Calling the function as <?php $res = xml_parser_create('') ?> will cause both versions of PHP to autodetect the format.

mmustafa at vsnl dot com (2004-01-05 10:00:04)

thought I'd share this small piece of PHP code that prepares a proper array from XML Data
(uses xml_parse_into_struct to get a raw array)
features : 1) can easily adjust to multiple levels 2) simple.
<code>
$file = "data.xml";
$xml_parser = xml_parser_create();
if (!($fp = fopen($file, "r"))) {
die("could not open XML input");
}
$data = fread($fp, filesize($file));
fclose($fp);
xml_parse_into_struct($xml_parser, $data, $vals, $index);
xml_parser_free($xml_parser);
$params = array();
$level = array();
foreach ($vals as $xml_elem) {
if ($xml_elem['type'] == 'open') {
if (array_key_exists('attributes',$xml_elem)) {
list($level[$xml_elem['level']],$extra) = array_values($xml_elem['attributes']);
} else {
$level[$xml_elem['level']] = $xml_elem['tag'];
}
}
if ($xml_elem['type'] == 'complete') {
$start_level = 1;
$php_stmt = '$params';
while($start_level < $xml_elem['level']) {
$php_stmt .= '[$level['.$start_level.']]';
$start_level++;
}
$php_stmt .= '[$xml_elem[\'tag\']] = $xml_elem[\'value\'];';
eval($php_stmt);
}
}
echo "<pre>";
print_r ($params);
echo "</pre>";
</code>
Example :
I/P XML ...
<country id="ZZ">
<name>My Land</name>
<location>15E</location>
<area>40000</area>
<state1>
<name>Hi State</name>
<area>1000</area>
<population>2000</population>
<city1>
<location>13E</location>
<population>500</population>
<area>500</area>
</city1>
<city2>
<location>13E</location>
<population>500</population>
<area>5000</area>
</city2>
</state1>
<state2>
<name>Low State</name>
<area>3000</area>
<population>20000</population>
<city1>
<location>15E</location>
<population>5000</population>
<area>1500</area>
</city1>
</state2>
</country>
O/P Array :
Array
(
[ZZ] => Array
(
[NAME] => My Land
[LOCATION] => 15E
[AREA] => 40000
[STATE1] => Array
(
[NAME] => Hi State
[AREA] => 1000
[POPULATION] => 2000
[CITY1] => Array
(
[LOCATION] => 13E
[POPULATION] => 500
[AREA] => 500
)
[CITY2] => Array
(
[LOCATION] => 13E
[POPULATION] => 500
[AREA] => 5000
)
)
[STATE2] => Array
(
[NAME] => Low State
[AREA] => 3000
[POPULATION] => 20000
[CITY1] => Array
(
[LOCATION] => 15E
[POPULATION] => 5000
[AREA] => 1500
)
)
)
)