PHP xml_set_element_handler() Function

The xml_set_element_handler() function specifies functions to be called at the start and end of an element in the XML document.This function returns TRUE on success, or FALSE on failure.

bool xml_set_element_handler ( resource $parser , callable $start_element_handler , callable $end_element_handler )

Sets the element handler functions for the XML parser. start_element_handler and end_element_handler are strings containing the names of functions that must exist when xml_parse() is called for parser.

Example -

The output of the code above will be : -

-- Note --
To: Tove
From: Jani
Heading: Reminder
Message: Don't forget me this weekend!

ParameterDescription
parserA reference to the XML parser to set up start and end element handler functions.
start_element_handlerRequired. Specifies a function to be called at the start of an element
end_element_handlerRequired. Specifies a function to be called at the end of an element

The Function specified by the "start" parameter must have three parameters : -

ParameterDescription
parserThe first parameter, parser, is a reference to the XML parser calling the handler.
nameThe second parameter, name, contains the name of the element for which this handler is called.If case-folding is in effect for this parser, the element name will be in uppercase letters.
attribsThe third parameter, attribs, contains an associative array with the element's attributes (if any).The keys of this array are the attribute names, the values are the attribute values.Attribute names are case-folded on the same criteria as element names.Attribute values are not case-folded. The original order of the attributes can be retrieved by walking through attribs the normal way, using each().The first key in the array was the first attribute, and so on.

The Function specified by the "end" parameter must have two parameters : -

ParameterDescription
parserThe first parameter, parser, is a reference to the XML parser calling the handler.
nameThe second parameter, name, contains the name of the element for which this handler is called.If case-folding is in effect for this parser, the element name will be in uppercase letters.If a handler function is set to an empty string, or FALSE, the handler in question is disabled.

Returns TRUE on success or FALSE on failure.