PHP | SimpleXMLIterator valid() Function
Last Updated :
29 Aug, 2019
The SimpleXMLIterator::valid() function is an inbuilt function in PHP which is used to check the current element is valid or not.
Syntax:
bool SimpleXMLIterator::valid( void )
Parameters: This function does not accept any parameters.
Return Value: This function returns TRUE if the current element is valid, or FALSE on failure.
Below programs illustrate the SimpleXMLIterator::valid() function in PHP:
Program 1:
<?php
$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 );
$xmlIt -> rewind ();
var_dump( $xmlIt ->valid());
$xmlIt ->next();
$xmlIt ->next();
$xmlIt ->next();
var_dump( $xmlIt ->valid());
?>
|
Output:
bool(true)
bool(false)
Program 2:
<?php
$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 );
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.valid.php
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