Description
int
xml_set_processing_instruction_handler
(int parser, string 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:
You can put PHP code into such a tag, but be aware of one
limitation: in an XML PI, the PI end tag
(
?>) can not be quoted, so this character
sequence should not appear in the PHP code you embed with PIs in
XML documents. If it does, the rest of the PHP code, as well as
the "real" PI end tag, will be treated as character data.
The function named by handler must accept
three parameters:
handler (int parser, string target, string data)
- parser
The first parameter, parser, is a
reference to the XML parser calling the
handler.
- target
The second parameter, target, contains
the PI target.
- data
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.
There is currently no support for object/method handlers. See
xml_set_object() for using the XML parser
within an object.
xml_set_character_data_handler