PHP XMLReader::readString() Function

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Definition and Usage

XML is a mark-up language to share the data across the web, XML is for both human read-able and machine read-able. XMLReader extension is used to read/retrieve the contents of an XML document i.e. using the methods of the XMLReader class you can read each node of an XML document.

The XMLReader:: readString() function of the XMLReader class is used to read the contents of the current node and returns them as a string.

Syntax

XMLReader::readString();

Parameters

This function does not accept any parameters.

Return Values

This function returns a string value representing the content of the current node. In case of a failure this function returns an empty string.

PHP Version

This function was first introduced in PHP Version 5 and works in all the later versions.

Example

Following example demonstrates the usage of the XMLReader::readString() function −

data.xml

<Data>
   <Employee>
      <Name>Krishna</Name>
      <Age>22</Age>
      <City>Hyderabad</City>   
   </Employee>

   <Employee>
      <Name>Raju</Name>
      <Age>30</Age>
      <City>Delhi</City>
   </Employee>
</Data>

sample.php

<?php
   //Creating an XMLReader
   $reader = new XMLReader();

   //Opening a reader
   $reader->open("data.xml");
   while($reader->next()){
      print($reader->readString());
   }
   $reader->close();
?>

This will produce following result −

Krishna
22
Hyderabad

Raju
30
Delhi

Example

Following is another example of this function −

data.xml

<data> 
   <name>Raju</name> 
   <age>32</age> 
   <phone>9848022338</phone> 
	<city>Hyderabad</city>
</data> 

sample.php

<?php
   //Creating an XMLReader
   $reader = new XMLReader();

   //Opening a reader
   $reader->open("test.xml");

   //Reading the contents of XML document
   $reader->next();

   //Reading the contents
   print($reader->name."\n");
   print($reader->readString());

   //Closing the reader
   $reader->close();
?>

This will produce following result −

data

   Raju
   32
   9848022338
   Hyderabad