Manual do PHP
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# xml_set_default_handler

(PHP 3>= 3.0.6, PHP 4 , PHP 5)

xml_set_default_handler -- Set up default handler

## Description

bool xml_set_default_handler ( resource parser, callback handler )

Sets the default 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.

The function named by handler must accept two parameters: handler ( resource parser, string data )

parser

  The first parameter, parser, is a reference to the XML parser calling the handler.

data

  The second parameter, data, contains the character data. This may be the XML declaration, document type declaration, entities or other data for which no other handler exists.

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.

> Nota: Ao invés de um nome de função, um array contendo uma referência de objeto e ao nome de método também podem ser fornecidos.

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