(PHP 3>= 3.0.6, PHP 4 )xml_set_processing_instruction_handler -- Set up processing instruction (PI) handler
Sets the processing instruction (PI) handler function for the XML parser parser. handler is a string containing the name of a function that must exist when xml_parse() is called for parser.
A processing instruction has the following format:
The function named by handler must accept
handler ( resource parser, string target, string data)
The first parameter, parser, is a reference to the XML parser calling the handler.
The second parameter, target, contains the PI target.
The third parameter, data, contains the PI data.
If a handler function is set to an empty string, or FALSE, the handler in question is disabled.
TRUE is returned if the handler is set up, FALSE if parser is not a parser.
Note: Instead of a function name, an array containing an object reference and a method name can also be supplied.