PHP XML parser function

PhpXML Parser Functions Introduction to PHP XML Parser

XML functions allow you to parse an XML document, but you cannot validate it.

XML is a data format used for standard structured document exchange. You can find more information about XML in our XML tutorials.

The extension uses the Expat XML parser.

Expat is an event-based parser that treats XML documents as a series of events. When an event occurs, it invokes a specified function to process it.

Expat is a non-validated parser that ignores any DTD that is linked to a document. However, if the document does not form well, it ends with an error message.

Because it is an event-based, non-validated parser, Expat has features that are fast and appropriate for WEB applications.

The XML parser function allows you to create an XML parser and define a handle for an XML event.

Installation

The XML Parser function is part of the PHP core. These functions can be used without installation.

PHP XML Parser function

php: Indicates the earliest version of PHP that supports this function.

function	Description	PHP
Utf8_decode ()	Decodes the UTF-8 string to iso-8859-1.	3
Utf8_encode ()	Encode the iso-8859-1 string as UTF-8.	3
Xml_error_string ()	Gets the error string for the XML parser.	3
Xml_get_current_byte_index ()	Gets the current byte index of the XML parser.	3
Xml_get_current_column_number ()	Gets the current column number of the XML parser.	3
Xml_get_current_line_number ()	Gets the current line number of the XML parser.	3
Xml_get_error_code ()	Gets the error code for the XML parser.	3
Xml_parse ()	Parse the XML document.	3
Xml_parse_into_struct ()	Parse the XML data into an array.	3
Xml_parser_create_ns ()	Creates an XML parser with namespace support.	4
Xml_parser_create ()	Create an XML parser.	3
Xml_parser_free ()	Releases the XML parser.	3
Xml_parser_get_option ()	Gets the options from the XML parser.	3
Xml_parser_set_option ()	Set options for the XML parser.	3
Xml_set_character_data_handler ()	Establishes the character data processor.	3
Xml_set_default_handler ()	Establishes the default processor.	3
Xml_set_element_handler ()	Establishes the start and end element processors.	3
Xml_set_end_namespace_decl_handler ()	Establishes the terminating namespace declaration processor.	4
Xml_set_external_entity_ref_handler ()	Create an external entity processor.	3
Xml_set_notation_decl_handler ()	Establishes the symbolic declaration processor.	3
Xml_set_object ()	Use an XML parser in an object.	4
Xml_set_processing_instruction_handler ()	Establishes the processing instruction (PI) processor.	3
Xml_set_start_namespace_decl_handler ()	Establishes the start namespace declaration processor.	4
Xml_set_unparsed_entity_decl_handler ()	Establishes an unresolved entity declaration processor.	3

PHP XML Parser Constants

Constant
Xml_error_none (integer)
Xml_error_no_memory (integer)
Xml_error_syntax (integer)
Xml_error_no_elements (integer)
Xml_error_invalid_token (integer)
Xml_error_unclosed_token (integer)
Xml_error_partial_char (integer)
Xml_error_tag_mismatch (integer)
Xml_error_duplicate_attribute (integer)
Xml_error_junk_after_doc_element (integer)
Xml_error_param_entity_ref (integer)
Xml_error_undefined_entity (integer)
Xml_error_recursive_entity_ref (integer)
Xml_error_async_entity (integer)
Xml_error_bad_char_ref (integer)
Xml_error_binary_entity_ref (integer)
Xml_error_attribute_external_entity_ref (integer)
XML_ERROR_MISPLACED_XML_PI (integer)
Xml_error_unknown_encoding (integer)
Xml_error_incorrect_encoding (integer)
Xml_error_unclosed_cdata_section (integer)
Xml_error_external_entity_handling (integer)
Xml_option_case_folding (integer)
Xml_option_target_encoding (integer)
Xml_option_skip_tagstart (integer)
Xml_option_skip_white (integer)

PHP XML parser function