The DOMNode::C14N() function is an inbuilt function in PHP which is used to convert a node into string.
Syntax:
string DOMNode::C14N( bool $exclusive, bool $with_comments, array $xpath, array $ns_prefixes )
Parameters: This function accepts four parameters as mentioned above and described below:
- $exclusive (Optional): It specifies whether to enable exclusive parsing of only the nodes matched by the provided xpath or namespace prefixes.
- $with_comments (Optional): It specifies whether to retain comments in output.
- $xpath (Optional): It specifies an array of xpaths to filter the nodes by.
- $ns_prefixes (Optional): It specifies an array of namespace prefixes to filter the nodes by.
Return Value: This function returns canonicalized nodes as a string or FALSE on failure.
Below examples illustrate the DOMNode::C14N() function in PHP:
Example 1:
<?php // Create a DOMDocument $doc = new DOMDocument(); // Load XML $doc->loadXML('<html></html>'); // Create an heading element on // DOMDocument object $h1 = $doc->createElement('h1'); // Append the child $doc->documentElement->appendChild($h1); // Get the data without comments $stringdata = $doc->C14N(); echo $stringdata; ?> |
Output:
<html><h1></h1></html>
Example 2:
<?php // Create a DOMDocument $doc = new DOMDocument(); // Load XML $doc->loadXML('<html><!-- This is a comment --></html>'); // Create an heading element on DOMDocument object $h1 = $doc->createElement('h1'); // Append the child $doc->documentElement->appendChild($h1); // Get the data with comments $stringdata = $doc->C14N(false, true); echo 'With Comments: <br>'; echo htmlentities($stringdata); // Get the data without comments $stringdata = $doc->C14N(false, false); echo '<br>Without Comments: <br>'; echo htmlentities($stringdata); ?> |
Output:
With Comments:
<html><!-- This is a comment --><h1></h1></html>
Without Comments:
<html><h1></h1></html>
