PHP | XMLReader open() Function

The XMLReader::open() function is an inbuilt function in PHP which is used to set the URI containing the XML document to be parsed. In simple words, this function is used to open the XML file which needs to be worked upon.

Syntax:

bool XMLReader::open( string $URI, string $encoding, int $options )

Parameters: This function accept three parameters as mentioned above and described below:

  • $URI: It specifies the URI pointing to the document.
  • $encoding (Optional): It specifies the document encoding or NULL.
  • $options (Optional): It specifies the bitmask.

Return Value: This function returns TRUE on success or FALSE on failure.

Exceptions: This function throws an E_STRICT error, if called statically.



Below examples illustrate the XMLReader::open() function in PHP:

Example 1:

  • data.xml
    filter_none

    edit
    close

    play_arrow

    link
    brightness_4
    code

    <?xml version="1.0" encoding="utf-8"?>
    <body>
        <h1 attrib="value"> Hello </h1>
    </body>

    chevron_right

    
    

  • index.php
    filter_none

    edit
    close

    play_arrow

    link
    brightness_4
    code

    <?php
      
    // Create a new XMLReader instance
    $XMLReader = new XMLReader();
      
    // Load the XML file
    $XMLReader->open('data.xml');
      
    // Iterate through the XML
    while ($XMLReader->read()) {
        if ($XMLReader->nodeType == XMLREADER::ELEMENT) {
      
            // Get the value of first attribute
            $value = $XMLReader->getAttributeNo(0);
      
            // Output the value to browser
            echo $value . "<br>";
        }
    }
    ?>

    chevron_right

    
    

  • Output:
    value

Program 2:

  • data.xml
    filter_none

    edit
    close

    play_arrow

    link
    brightness_4
    code

    <?xml version="1.0" encoding="utf-8"?>
    <body>
        <h1> GeeksforGeeks </h1>
    </body>

    chevron_right

    
    

  • index.php
    filter_none

    edit
    close

    play_arrow

    link
    brightness_4
    code

    <?php
      
    // Create a new XMLReader instance
    $XMLReader = new XMLReader();
      
    // Load the XML file
    $XMLReader->open('data.xml');
      
    // Move to the first node
    $XMLReader->read();
      
    // Read it as a string
    $string = $XMLReader->readString();
      
    // Output the string to the browser
    echo $string;
    ?>

    chevron_right

    
    

  • Output:
    GeeksforGeeks

Reference: https://www.php.net/manual/en/xmlreader.open.php




My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.


Article Tags :
Practice Tags :


Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.