| Function | Description |
| utf8_decode() | Decodes an UTF-8 string to ISO-8859-1 |
| utf8_encode() | Encodes an ISO-8859-1 string to UTF-8 |
| xml_error_string() | Gets an error string from the XML parser |
| xml_get_current_byte_index() | Gets the current byte index from the XML parser |
| xml_get_current_column_number() | Gets the current column number from the XML parser |
| xml_get_current_line_number() | Gets the current line number from the XML parser |
| xml_get_error_code() | Gets an error code from the XML parser |
| xml_parse() | Parses an XML document |
| xml_parse_into_struct() | Parse XML data into an array |
| xml_parser_create_ns() | Create an XML parser with namespace support |
| xml_parser_create() | Create an XML parser |
| xml_parser_free() | Free an XML parser |
| xml_parser_get_option() | Get options from an XML parser |
| xml_parser_set_option() | Set options in an XML parser |
| xml_set_character_data_handler() | Set handler function for character data |
| xml_set_default_handler() | Set default handler function |
| xml_set_element_handler() | Set handler function for start and end element of elements |
| xml_set_end_namespace_decl_handler() | Set handler function for the end of namespace declarations |
| xml_set_external_entity_ref_handler() | Set handler function for external entities |
| xml_set_notation_decl_handler() | Set handler function for notation declarations |
| xml_set_object() | Use XML Parser within an object |
| xml_set_processing_instruction_handler() | Set handler function for processing instruction |
| xml_set_start_namespace_decl_handler() | Set handler function for the start of namespace declarations |
| xml_set_unparsed_entity_decl_handler() | Set handler function for unparsed entity declarations |
