The xml_parser_create() function is an inbuilt function in PHP which is used to create an XML parser.
Syntax:
resource xml_parser_create( string $encoding )
Parameters: This function accepts single parameter $encoding which is optional. It specifies the character encoding:
- for input/output in PHP 4
- only for output from PHP 5
- for 5.0.0 and 5.0.1 default output charset is ISO-8859-1
- from 5.0.2 default output charset is UTF-8
Return Value: This function returns the resource handler which is to be used by some other XML functions on success or False on failure.
Note:
- This function is available for PHP 4.0.0 and newer version.
- These examples may not work on online IDE. So, try to run it on local server or php hosted servers.
gfg.xml file:
HTML
<?xml version="1.0" encoding="utf-8"?><user> <username> user123 </username> <name> firstname lastname </name> <phone> +91-9876543210 </phone> <detail> I am John Doe. Live in Kolkata, India. </detail></user> |
Program 1:
PHP
<?php// Create an XML parser$parser = xml_parser_create(); // set the character handler function// for the XML parserxml_set_character_data_handler($parser, "char_print"); // Opening the xml file$filePointer = fopen("gfg.xml", "r"); // Reading xml data from filewhile($data = fread($filePointer, 4096)) { // Parsing XML data xml_parse($parser, $data, feof($filePointer)) or // Display error when parse error occurs die(sprintf("XML Error: %s at line %d", // Error string xml_error_string(xml_get_error_code($parser)), // Current line xml_get_current_line_number($parser)) );}// Free to xml parserxml_parser_free($parser);fclose($filePointer); // Character handler function for XML parserfunction char_print($parser, $data) { echo $data;} ?> |
Output:
user123 firstname lastname +91-9876543210 I am John Doe. Live in Kolkata, India.
neveropen.xml file:
XML
<?xml version="1.0" encoding="utf-8"?><user> <username> user123 </username> <name> firstname lastname </name> <phone> +91-9876543210 </phone> <detail> I am John Doe. Live in Kolkata, India. </detail></user> |
Program 2:
PHP
<?php// Creating an XML parser$parser = xml_parser_create();// Element handler function named "starting_handler"// enables custom manipulation for outputfunction starting_handler($parser, $element_name, $element_attrs) { switch($element_name) { case "USER": echo "<u>USER DATA</u><br>"; break; case "USERNAME": echo "Username: "; break; case "NAME": echo "Name: "; break; case "PHONE": echo "Phone no: "; break; case "DETAIL": echo "More about user: "; }}// Element handler function named "ending_handler"function ending_handler($parser, $element_name) { echo "<br>";}// Character handler function named "char_handler"function char_handler($parser, $data) { echo $data;}// Setting the element handlersxml_set_element_handler($parser, "starting_handler", "ending_handler");// Setting character data handlerxml_set_character_data_handler($parser, "char_handler");// Opening xml file$fp = fopen("neveropen.xml", "r");// Reading xml file while ($data = fread($fp, 4096)) { xml_parse($parser, $data, feof($fp)) or // Display error while xml parsing die (sprintf("XML Error: %s at line %d", // Error string xml_error_string(xml_get_error_code($parser)), // Error line number xml_get_current_line_number($parser)) );}// Free to xml parserxml_parser_free($parser);// Closing file streamfclose($fp);?> |
Output:
USER DATA Username: user123 Name: firstname lastname Phone no: +91-9876543210 More about user: I am John Doe. Live in Kolkata, India.
Reference: https://www.php.net/manual/en/function.xml-parser-create.php
