PHP | XMLReader readString() Function

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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
<?xml version="1.0" encoding="utf-8"?>

<div>

<h1>zambiatek</h1>

</div>

index.php

<?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(); 
?> 

Output:
```
The text inside is: zambiatek
```

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

data.xml
<?xml version="1.0" encoding="utf-8"?>

<div>

    <h1>Hello World

       <sub>G4G</sub>

    </h1>

</div>

index.php

<?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(); 
?> 