PHP | XMLReader readString() Function

The XMLReader::readString() function is an inbuilt function in PHP which is used to read the contents of the current node as a string. Difference between readString() and getInnerXml() is that the former doesn’t includes the markup but only the content for subnodes.

Syntax:

string XMLReader::readString( void )

Parameters: This function doesn’t accept any parameter.

Return Value: This function returns the content of the current node as a string or empty string on failure.

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



Example 1: In this program, we will read the value of an element without sub-nodes.

  • data.xml
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    <?xml version="1.0" encoding="utf-8"?>
    <div>
        <h1>GeeksforGeeks</h1>
    </div>

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  • index.php
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    <?php
      
    // Create a new XMLReader instance
    $XMLReader = new XMLReader();
      
    // Open the XML file
    $XMLReader->open('data.xml');
      
    // Iterate through the XML nodes to
    // reach the h1 element
    $XMLReader->read();
    $XMLReader->read();
    $XMLReader->read();
      
    // Print the XML content
    echo "The text inside is:" 
      . $XMLReader->readString();
    ?>

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  • Output:
    The text inside is: GeeksforGeeks

Example : In this program, we will read the value of an element with sub-nodes.

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    <?xml version="1.0" encoding="utf-8"?>
    <div>
        <h1>Hello World 
           <sub>G4G</sub>
        </h1>
    </div>

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  • index.php
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    <?php
      
    // Create a new XMLReader instance
    $XMLReader = new XMLReader();
      
    // Open the XML file
    $XMLReader->open('data.xml');
      
    // Iterate through the XML nodes to
    // reach the h1 element
    $XMLReader->read();
    $XMLReader->read();
    $XMLReader->read();
      
    // Print the XML content
    echo "The text inside is:" 
      . $XMLReader->readString();
    ?>

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  • Output:
    The text inside is: Hello World G4G

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




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