The xml_set_processing_instruction_handler() function specifies a function to be called when the parser finds a processing instruction in the XML document.
A processing instruction is enclosed in <? and ?> delimiters and contains a a target followed by data.
Example: In this case the processing instruction associates a style sheet with an XML document:
This function returns TRUE on success, or FALSE on failure.
Parameter | Description |
---|---|
parser | Required. Specifies XML parser to use |
handler | Required. Specifies a function to be when the parser finds a notation declaration |
The Function specified by the "handler" parameter must have three parameters:
Parameter | Description |
---|---|
parser | Required. Specifies a variable containing the XML parser calling the handler |
target | Required. Specifies a variable containing processing instruction target |
data | Required. Specifies a variable containing processing instruction data |
Note: The handler parameter can also be an array containing an object reference and a method name.