Php recursive parsing array generation xml Question Help-php Tutorial

Php recursively parses the array to generate xml. my basic idea is to traverse the array and determine whether the current element has a subarray named "childs". if so, recursively execute this function.

$config = array('root' => array('childs' => array('body' => array('childs' => array('scroller' => array('childs' => array('header' => array('childs' => array('simpleHeader' => array('childs' => array('a' => array())))),'items' => array('childs' => array('fuck' => array('childs' => array('b' => array())))))))))));header("Content-type:text/xml;Charset=UTF-8");$xml = new XMLWriter();$xml->openUri('php://output');$xml->startDocument('1.0', 'UTF-8');$xml->setIndent(true);function writeXml($array){global $xml;foreach($array as $key => $value){$xml->startElement($key);if( isset($value['childs']) && is_array($value['childs']) && count($value['childs']) > 0 ){writeXml($value['childs']);}$xml->endElement();}$xml->endDocument();$xml->flush();}writeXml($config);

Why is the generated xml incorrect? Items ran outside

Reply to discussion (solution)

You can take a closer look at the logic of if judgment.
Php SPL contains a recursion tool, which is easy to write.

Set
$ Xml-> endDocument ();
$ Xml-> flush ();
Remove the writeXml function and finally execute

....writeXml($config);$xml->endDocument();$xml->flush();

Set
$ Xml-> endDocument ();
$ Xml-> flush ();
Remove the writeXml function and finally execute

....writeXml($config);$xml->endDocument();$xml->flush();

I am grateful. I always thought there was a logic problem. after a long time, the problem occurred.

Encapsulated as a function

function writeXml($array, $xml=null){  if(! $xml) {    header("Content-type:text/xml;Charset=UTF-8");    $xml = new XMLWriter();    $xml->openUri('php://output');    $xml->startDocument('1.0', 'UTF-8');    $xml->setIndent(true);    writeXml($array, $xml);    $xml->endDocument();    $xml->flush();  }else {    foreach($array as $key => $value){        $xml->startElement($key);        if( isset($value['childs']) && is_array($value['childs']) && count($value['childs']) > 0 ){            writeXml($value['childs'], $xml);        }        $xml->endElement();    }  }}

Call writeXml ($ config );