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<?php class SerializableDomDocument extends DOMDocument { private $xmlData; public function __sleep(): array { $this->xmlData = $this->saveXML(); return ['xmlData']; } public function __wakeup(): void { $this->loadXML($this->xmlData); } } $dom = new SerializableDomDocument('1.0', 'UTF-8'); $dom->loadXML('<tag>value</tag>'); $serialized = serialize($dom); $unserialized = unserialize($serialized); echo "Serialized:\t$serialized\n-----------\nRestored:\t{$unserialized->saveXml()}";
Output for git.master, git.master_jit, rfc.property-hooks
Serialized: O:23:"SerializableDomDocument":1:{s:32:"SerializableDomDocumentxmlData";s:39:"<?xml version="1.0"?> <tag>value</tag> ";} ----------- Restored: <?xml version="1.0"?> <tag>value</tag>

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