PHP Function Xml_Get_Error_Code

php function xml_get_error_code is an inbuilt php function that retrieves the error code from the xml parser. This function accepts a single parameter, which is the reference to the xml parser to get the error code from. If the parser is invalid or has an error, then this function will return one of the error codes listed in the error codes section.

XML is used for structured data sharing among web applications. This structured data is represented by tags in a document. The tag is an element with a name and value which represents the information that you want to share across your application. The XML parser is a component of the PHP core that allows you to read and manipulate XML documents. This parser is not able to validate the document against a DTD (Document Type Definition).

Error handling for XML in PHP can be done using the built-in functions xml_get_error_code, xml_get_error_string, and xml_parser_free. This example uses a procedural style to create an XML parser, then demonstrates how to use the xml_get_error_code and xml_get_error_string functions to handle errors that may occur during parsing.

The example code uses the xml_parser_create() function to create an XML parser and sets a number of options for the XML parser, such as the encoding and case folding option. It then uses xml_parse_into_struct() to parse the uploaded XML file and stores the results in an array $values. If an error occurs during parsing, it retrieves the error code with xml_get_error_code() and then uses a switch statement to handle the different error codes. Finally, it calls xml_parser_free() to close the parser resource.