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PHP | SimpleXMLIterator rewind() Function

  • Last Updated : 20 Jul, 2020

The SimpleXMLIterator::rewind() function is an inbuilt function in PHP which is used to rewind the SimpleXMLIterator to the first element.

Syntax:

void SimpleXMLIterator::rewind( void )

Parameters: This function does not accept any parameters.

Return Value: This function does not return any value.

Below programs illustrate the SimpleXMLIterator::rewind() function in PHP:



Program 1:




<?php
  
// Store the xml element to variable
$xml = <<<XML
    <organization>
        <name>GeeksforGeeks</name>
        <address>Noida India</address>
        <contact>
            <email>abc@geeksforgeeks.org</email>
            <mobile>+91-987654321</mobile>
        </contact>
    </organization>
XML;
  
$xmlIt = new SimpleXMLIterator($xml);
  
// Use rewind() function to rewind
// to the first element
$xmlIt->rewind();
  
// Use next() function to move to the
// next element
$xmlIt->next();
$xmlIt->next();
  
// Display result
var_dump($xmlIt->current());
  
?>
Output:
object(SimpleXMLIterator)#2 (2) {
  ["email"]=>
  string(21) "abc@geeksforgeeks.org"
  ["mobile"]=>
  string(13) "+91-987654321"
}

Program 2:




<?php
  
// Store the xml element to variable
$xml = <<<XML
    <organization>
        <name>GeeksforGeeks</name>
        <address>Noida India</address>
        <contact>
            <email>abc@geeksforgeeks.org</email>
            <mobile>+91-987654321</mobile>
        </contact>
    </organization>
XML;
  
$xmlIt = new SimpleXMLIterator($xml);
  
// Loop starts from first element of xml and 
// run upto when elements are not valid
for( $xmlIt->rewind(); $xmlIt->valid(); $xmlIt->next() ) {
      
    var_dump($xmlIt->key());
}
  
?>
Output:
string(4) "name"
string(7) "address"
string(7) "contact"

Reference: https://www.php.net/manual/en/simplexmliterator.rewind.php




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