(PHP 5 >= 5.2.0)
DOMNode::C14NFile — Canonicalize nodes to a file
$uri
[, bool $exclusive
[, bool $with_comments
[, array $xpath
[, array $ns_prefixes
]]]] )Canonicalize nodes to a file.
uri
Path to write the output to.
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.
Number of bytes written or FALSE on failure