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PHP | xml_parser_create() Function

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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 parser
xml_set_character_data_handler($parser, "char_print");
  
// Opening the xml file
$filePointer = fopen("gfg.xml", "r");
  
// Reading xml data from file
while($data = fread($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 parser
xml_parser_free($parser);
 
fclose($filePointer);
  
// Character handler function for XML parser
function char_print($parser, $data) {
    echo $data;
}
  
?>


Output: 

user123 
firstname lastname 
+91-9876543210 
I am John Doe. Live in Kolkata, India. 

geeks.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 output
function 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 handlers
xml_set_element_handler($parser,
            "starting_handler", "ending_handler");
 
// Setting character data handler
xml_set_character_data_handler($parser, "char_handler");
 
// Opening xml file
$fp = fopen("geeks.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 parser
xml_parser_free($parser);
 
// Closing file stream
fclose($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
 



Last Updated : 11 Mar, 2022
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