(PHP 5, PHP 7)
DOMDocument::createProcessingInstruction — Creates new PI node
public DOMDocument::createProcessingInstruction ( string $target [, string $data ] ) : DOMProcessingInstruction
This function creates a new instance of class DOMProcessingInstruction. This node will not show up in the document unless it is inserted with (e.g.) DOMNode::appendChild().
target
The target of the processing instruction.
data
The content of the processing instruction.
The new DOMProcessingInstruction or false if an error occurred.
DOM_INVALID_CHARACTER_ERR
Raised if target contains an invalid character.
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https://www.php.net/manual/en/domdocument.createprocessinginstruction.php