function xml2arr($xml)
{
$obj = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
$json = json_encode($obj);
$arr = json_decode($json, true);
return $arr;
}
function arr2xml($root_element_name,$ar)
{
$xml = new \SimpleXMLElement("<?xml version=\"1.0\"?><{$root_element_name}></{$root_element_name}>");
$f = create_function('$f,$c,$a','
foreach($a as $k=>$v) {
if(is_array($v)) {
$ch=$c->addChild($k);
$f($f,$ch,$v);
} else {
$c->addChild($k,$v);
}
}');
$f($f,$xml,$ar);
return $xml->asXML();
}
arr2xml方法有个bug，因为array的下标不能同名，但xml的子元素是可以同名的，如<peoples><people>...</people>...</peoples>，peoples里面有多个people元素，此时php声明数组时，下标必须不同，如$peoples['people_1']=[]，$peoples['people_2']=[]来创建，而不能$peoples['people']=[],$peoples['people']=[]来定义两个元素，所有在调用arr2xml之后，要将_1或_2之类的下标替换掉，如$xml = preg_replace('/\_\d+\>/','',$xml);
