XML to Array???

[redpotato]

I was trying to reach the deepest element in a xml.
for example,

<a>
<b></b>
</a>
<a>
<b>
<c></c>
</b>
</a>
<a>
<b>
<c>
<d></d>
</c>
</b>
</a>

in that kind of structure of xml, how can I reach <d></d> element?
could someone explain? (someone mentioned, it needs to use simpleXML but I still have no idea)

 

[cspilman]

depends on what you want to do with the element. Did you want to change it? if so, something like this for starters may work:

$xmldoc = 'file.xml';

$newvalue = 'some_new_value';

$doc = new DOMDocument;
$doc->formatOutput = true;
$doc->preserveWhiteSpace = false;
$doc->load("$xmldoc");
$text = $doc->createTextNode($newvalue);

$value = $doc->getElementsByTagName('d')->item(0);
$value->firstChild->nodeValue = $newsvalue;

$doc->save($xmldoc);

If you just want to display it, you might try:

$xmldoc = 'file.xml';

$xmlDoc = new DOMDocument();
$xmlDoc->load("$xmldoc");

function startTag($parser, $data){
    echo "<p>";
}

function endTag($parser, $data){
    echo "</p><br>";
}

$xml_parser = xml_parser_create();
xml_set_element_handler($xml_parser, "startTag", "endTag");
xml_set_character_data_handler($xml_parser, "contents");
$fp = fopen($xmldoc, "r");
$data = fread($fp, 80000);
if(!(xml_parse($xml_parser, $data, feof($fp)))){
    die("Error on line " . xml_get_current_line_number($xml_parser));
}

Regards,
Chuck

 

[redpotato]

Sorry, Chuck.

If I run your code, it comes with Warning: xml_parse() [function.xml-parse]: Unable to call handler contents() in G:\xampp\htdocs\xml_s.php

any idea?

 

[redpotato]

just realized that, I don't think it is for getting the value where is the deepest element.

 

[tsuji]

What is the specificity of d? Which generic factor(s) determining it? Is the name d generic or just figurative? How do you want to do with node-d? Have to more specific.

 

[redpotato]

that was just an example.
as I mentioned, I need to get a value which sits the deepest element in XML. doesn't matter where the element is. doesn't matter d or c. just try to find the value of the deepest element in XML

 

[jpadie]

can you explain the purpose of this requirement? a real world example of the usefulness of this? that might help us find a solution.

 

[tsuji]

Now that I know how critical the question is to op's work and how "much" "driving will" to get help op have, I can all the same trying to help. How the script actually help will be a test to op's readiness that I will not involve.
[tt]
//your givens
[green]$xfile="data.xml";[/green]

$xdoc=simplexml_load_file($xfile);
$nlist=$xdoc->xpath("//*[count(child::*)=0]");

$maxdepth=0;
$nmaxlist=array(); //this will hold the desired results

foreach ($nlist as $node) {
$depth=count($node->xpath(".//ancestor::*"));
if ($depth>$maxdepth) {
$maxdepth=$depth;
$nmaxlist=array();
array_push($nmaxlist, $node);
} elseif ($depth=$maxdepth) {
array_push($nmaxlist, $node);
}
}

foreach ($nmaxlist as $node) {
echo $node->getName()." : ".$node."\n";
}
[/tt]