DOMNode::C14N

(PHP 5 >= 5.2.0, PHP 7)

DOMNode::C14N — Canonicalize nodes to a string

public DOMNode::C14N ([ bool $exclusive [, bool $with_comments [, array $xpath [, array $ns_prefixes ]]]] ) : string

Canonicalize nodes to a string

exclusive: Enable exclusive parsing of only the nodes matched by the provided xpath or namespace prefixes.
with_comments: Retain comments in output.
xpath: An array of xpaths to filter the nodes by.
ns_prefixes: An array of namespace prefixes to filter the nodes by.

Returns canonicalized nodes as a string 或者在失败时返回 FALSE