abstract：(PHP 5, PHP 7) DOMDocument::normalizeDocument — Normalizes the document
(PHP 5, PHP 7)
DOMDocument::normalizeDocument — Normalizes the document
abstract：(PHP 5, PHP 7) DOMDocument::normalizeDocument — Normalizes the document
(PHP 5, PHP 7)
DOMDocument::normalizeDocument — Normalizes the document
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