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(PHP 5, PHP 7)
DOMProcessingInstruction::__construct — Creates a new DOMProcessingInstruction object
$name
[, string $value
] )Creates a new DOMProcessingInstruction object. This object is read only. It may be appended to a document, but additional nodes may not be appended to this node until the node is associated with a document. To create a writeable node, use DOMDocument::createProcessingInstruction.
name
The tag name of the processing instruction.
value
The value of the processing instruction.
Example #1 Creating a new DOMProcessingInstruction object
<?php
$dom = new DOMDocument ( '1.0' , 'UTF-8' );
$html = $dom -> appendChild (new DOMElement ( 'html' ));
$body = $html -> appendChild (new DOMElement ( 'body' ));
$pinode = new DOMProcessingInstruction ( 'php' , 'echo "Hello World"; ' );
$body -> appendChild ( $pinode );
echo $dom -> saveXML ();
?>
以上例程会输出:
<?xml version="1.0" encoding="UTF-8"?> <html><body><?php echo "Hello World"; ?></body></html>