Remove XML codec class
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src/API/XML.php
280
src/API/XML.php
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<?php declare(strict_types=1);
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/**
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* Hummingbird Anime List Client
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*
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* An API client for Kitsu to manage anime and manga watch lists
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*
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* PHP version 7.1
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*
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* @package HummingbirdAnimeClient
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* @author Timothy J. Warren <tim@timshomepage.net>
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* @copyright 2015 - 2018 Timothy J. Warren
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* @license http://www.opensource.org/licenses/mit-license.html MIT License
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* @version 4.1
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* @link https://git.timshomepage.net/timw4mail/HummingBirdAnimeClient
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*/
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namespace Aviat\AnimeClient\API;
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use DOMDocument, DOMNode, DOMNodeList, InvalidArgumentException;
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/**
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* XML <=> PHP Array codec
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*/
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final class XML {
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/**
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* XML representation of the data
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*
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* @var string
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*/
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private $xml;
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/**
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* PHP array version of the data
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*
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* @var array
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*/
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private $data;
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/**
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* XML constructor
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*
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* @param string $xml
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* @param array $data
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*/
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public function __construct(string $xml = '', array $data = [])
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{
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$this->setXML($xml)->setData($data);
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}
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/**
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* Serialize the data to an xml string
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*
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* @return string
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*/
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public function __toString(): string
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{
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return static::toXML($this->getData());
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}
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/**
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* Get the data parsed from the XML
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*
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* @return array
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*/
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public function getData(): array
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{
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return $this->data;
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}
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/**
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* Set the data to create xml from
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*
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* @param array $data
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* @return self
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*/
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public function setData(array $data): self
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{
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$this->data = $data;
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return $this;
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}
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/**
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* Get the xml created from the data
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*
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* @return string
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*/
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public function getXML(): string
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{
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return $this->xml;
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}
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/**
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* Set the xml to parse the data from
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*
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* @param string $xml
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* @return self
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*/
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public function setXML(string $xml): self
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{
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$this->xml = $xml;
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return $this;
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}
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/**
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* Parse an xml document string to a php array
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*
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* @param string $xml
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* @return array
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*/
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public static function toArray(string $xml): array
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{
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$data = [];
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$xml = static::stripXMLWhitespace($xml);
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$dom = new DOMDocument();
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$hasLoaded = @$dom->loadXML($xml);
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if ( ! $hasLoaded)
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{
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throw new InvalidArgumentException('Failed to load XML');
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}
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$root = $dom->documentElement;
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$data[$root->tagName] = [];
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if ($root->hasChildNodes())
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{
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static::childNodesToArray($data[$root->tagName], $root->childNodes);
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}
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return $data;
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}
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/**
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* Transform the array into XML
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*
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* @param array $data
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* @return string
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*/
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public static function toXML(array $data): string
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{
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$dom = new DOMDocument();
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$dom->encoding = 'UTF-8';
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static::arrayPropertiesToXmlNodes($dom, $dom, $data);
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return $dom->saveXML();
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}
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/**
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* Parse the xml document string to a php array
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*
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* @return array
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*/
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public function parse(): array
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{
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$xml = $this->getXML();
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$data = static::toArray($xml);
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return $this->setData($data)->getData();
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}
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/**
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* Transform the array into XML
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*
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* @return string
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*/
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public function createXML(): string
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{
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return static::toXML($this->getData());
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}
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/**
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* Strip whitespace from raw xml to remove irrelevant text nodes
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*
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* @param string $xml
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* @return string
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*/
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private static function stripXMLWhitespace(string $xml): string
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{
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// Get rid of unimportant text nodes by removing
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// whitespace characters from between xml tags,
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// except for the xml declaration tag, Which looks
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// something like:
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/* <?xml version="1.0" encoding="UTF-8"?> */
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return preg_replace('/([^?])>\s+</', '$1><', $xml);
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}
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/**
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* Recursively create array structure based on xml structure
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*
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* @param array $root A reference to the current array location
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* @param DOMNodeList $nodeList The current NodeList object
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* @return void
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*/
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private static function childNodesToArray(array &$root, DOMNodelist $nodeList): void
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{
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$length = $nodeList->length;
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for ($i = 0; $i < $length; $i++)
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{
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$el = $nodeList->item($i);
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$current =& $root[$el->nodeName];
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// It's a top level element!
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if (( ! $el->hasChildNodes()) || is_a($el->childNodes->item(0), 'DomText'))
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{
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$current = $el->textContent;
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continue;
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}
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// An empty value at the current root
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if ($current === NULL)
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{
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$current = [];
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static::childNodesToArray($current, $el->childNodes);
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continue;
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}
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$keys = array_keys($current);
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// Wrap the array in a containing array
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// if there are only string keys
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if ( ! is_numeric($keys[0]))
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{
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// But if there is only one key, don't wrap it in
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// an array, just recurse to parse the child nodes
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if (count($current) === 1)
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{
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static::childNodesToArray($current, $el->childNodes);
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continue;
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}
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$current = [$current];
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}
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$current[] = [];
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$index = count($current) - 1;
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static::childNodesToArray($current[$index], $el->childNodes);
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}
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}
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/**
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* Recursively create xml nodes from array properties
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*
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* @param DOMDocument $dom The current DOM object
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* @param DOMNode $parent The parent element to append children to
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* @param array $data The data for the current node
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* @return void
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*/
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private static function arrayPropertiesToXmlNodes(DOMDocument $dom, DOMNode $parent, array $data): void
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{
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foreach($data as $key => $props)
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{
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// 'Flatten' the array as you create the xml
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if (is_numeric($key))
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{
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foreach($props as $key => $props)
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{
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break;
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}
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}
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$node = $dom->createElement($key);
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if (\is_array($props))
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{
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static::arrayPropertiesToXmlNodes($dom, $node, $props);
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}
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else
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{
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$tNode = $dom->createTextNode((string)$props);
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$node->appendChild($tNode);
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}
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$parent->appendChild($node);
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}
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}
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}
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