Set options in an XML parser

Description

xml_parser_set_option(XMLParser $parser, int $option, string|int|bool $value): bool

Sets an option in an XML parser.

Parameters

parser

A reference to the XML parser to set an option in.

option

Which option to set. See below.

The following options are available:

**XML parser options**
Option constant	Data type	Description
`XML_OPTION_CASE_FOLDING`	bool	Controls whether case-folding is enabled for this XML parser. Enabled by default.
`XML_OPTION_SKIP_TAGSTART`	integer	Specify how many characters should be skipped in the beginning of a tag name.
`XML_OPTION_SKIP_WHITE`	bool	Whether to skip values consisting of whitespace characters.
`XML_OPTION_TARGET_ENCODING`	string	Sets which target encoding to use in this XML parser.By default, it is set to the same as the source encoding used by xml_parser_create(). Supported target encodings are `ISO-8859-1`, `US-ASCII` and `UTF-8`.

value

The option's new value.

Return Values

Returns true on success or false on failure.

Errors/Exceptions

Throws a ValueError when an invalid value is passed to option.

Prior to PHP 8.0.0, the function returned false when passing an invalid value to option generated a E_WARNING as well as making the function return false.

Changelog

Version	Description
8.3.0	The `value` parameter now also accepts booleans. The options `XML_OPTION_CASE_FOLDING` and `XML_OPTION_SKIP_WHITE` are now boolean options.
8.0.0	`parser` expects an XMLParser instance now; previously, a valid `xml` resource was expected.
8.0.0	A ValueError is now thrown if `option` is invalid.