PHP Converting XML to array

Question

I was trying to find a way to convert any xml feed into an associative array, I noticed many other people have looked for the same thing, and there has been many attempts, some of them have failed, I found the following way of doing it, credit goes to

http://gaarf.info/2009/08/13/xml-string-to-php-array/

I slightly changed the code, and here is the outcome.

    function xmlNameSpaceToArray(SimpleXmlIterator $xml, $nameSpaces=Null){
      $output = Null;
      $preparedArray = array();
      for($xml->rewind(); $xml->valid(); $xml->next()) {
        $key = $xml->key();
        if(!isset($preparedArray[$key])) { $preparedArray[$key] = array(); $i=0; }
        else $i = count($preparedArray[$key]);
        $simple = true;
        foreach($xml->current()->attributes() as $k=>$v) {
            $preparedArray[$key][$i][$k]=(string)$v;
            $simple = false;
        }
        if($nameSpaces) foreach($nameSpaces as $nid=>$name) {
          foreach($xml->current()->attributes($name) as $k=>$v) {
             $preparedArray[$key][$i][$nid.':'.$k]=(string)$v;
             $simple = false;
          }
        } 
        if($xml->hasChildren()) {
            if($simple) $preparedArray[$key][$i] = xmlNameSpaceToArray($xml->current(), $nameSpaces);
            else $preparedArray[$key][$i]['content'] = xmlNameSpaceToArray($xml->current(), $nameSpaces);
        } else {
            if($simple) $preparedArray[$key][$i] = strval($xml->current());
            else $preparedArray[$key][$i]['content'] = strval($xml->current());
        }
        $i++;
      }
      $output = $preparedArray;
      return $preparedArray;
    }

    function xmlToArray($xmlFilePath){
        $xml = new SimpleXmlIterator($xmlFilePath , null, true);
        $nameSpaces = $xml->getNamespaces(true);
        $output = xmlNameSpaceToArray($xml,$nameSpaces);
        return $output;
    }

    $xmlFilePath = 'http://forums.devshed.com/rss/feed-5.xml';
    $output = xmlToArray($xmlFilePath);
    print_r($output);

What I'm trying to find out now is potential problems this could have, the goal is to make this work for EVERY well structured XML feed, without any php warnings, notices and without losing any data.

Can you find a flaw in this or a feed that doesn't work? It worked for everything I tested it for.

What is $xml? And if you want to give credits, name the author as well, not just paste a link. — hakre
– hakre, Commented Nov 9, 2011 at 21:44
$xml is an object which is instance of PHP SimpleXml's SimpleXmlIterator class. I added data type definition to the function to make it more clear, notice that you don't need to use that function directly. I don't know the name of the author. — Yasser1984
– Yasser1984, Commented Nov 9, 2011 at 21:48
You can remove the lines $output = Null; and $output = $preparedArray; since together they don't really do anything, especially since you return $preparedArray — bearvrrr
– bearvrrr, Commented Nov 12, 2011 at 13:59
I can't think of a way to break it with well structured XML. I guess what is more interesting is what happens with badly formed XML — bearvrrr
– bearvrrr, Commented Nov 12, 2011 at 14:01

James Hall · Accepted Answer · 2013-04-06 08:48:52Z

5

Easiest way to do this is to use the built in functions, then convert to an array.

<?php
$obj = simplexml_load_string($xml); // Parse XML
$array = json_decode(json_encode($obj), true); // Convert to array
?>

answered Apr 6, 2013 at 8:48

James Hall

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lasseoe · Accepted Answer · 2012-04-11 15:55:31Z

0

This piece of XML seems to break it.

<BackupJob ID="2011-11-09-05-00-00" StartTime="2011-11-09 04:56:51" EndTime="2011-11-09 05:02:01" BackupJobStatus="BS_STOP_SUCCESS" NumOfWarnEntries="0" NumOfErrorEntries="0" NumOfNewFiles="0" TotalNewFilesSize="0" NumOfUpdatedFiles="1" TotalUpdatedFilesSize="8709755" NumOfDeletedFiles="0" TotalDeletedFilesSize="0" NumOfMovedFiles="0" TotalMovedFilesSize="0" NumOfUpdatedPermissionFiles="0" TotalUpdatedPermissionFilesSize="0"></BackupJob>

answered Apr 11, 2012 at 15:55

lasseoe

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Vishnu Sharma · Accepted Answer · 2013-09-25 11:36:31Z

0

http://php.net/manual/en/book.simplexml.php

The syntax looks something like this for your example

<aaaa Version="1.0">
   <bbb>
     <cccc>
       <dddd Id="id:pass" />
       <eeee name="hearaman" age="24" />
     </cccc>
   </bbb>
</aaaa>

PHP code

<?php
$xml = new SimpleXMLElement($xmlString);
echo $xml->bbb->cccc->dddd['Id'];
echo $xml->bbb->cccc->eeee['name'];
// or...........
foreach ($xml->bbb->cccc as $element) {
  foreach($element as $key => $val) {
   echo "{$key}: {$val}";
  }
}

answered Sep 25, 2013 at 11:36

Vishnu Sharma

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