PHP valid() Function

Example

Check whether the current element is valid after a call to rewind() and next():

<?php
$note=<<<XML
<note>
<to>Tove</to>
<from>Jani</from>
<heading>Reminder</heading>
<body>Do not forget me this weekend!</body>
</note>
XML;

$xml = new SimpleXMLIterator($note);

// rewind to the first element
$xml->rewind();

// check if valid
var_dump($xml->valid());

// move to the next element
$xml->next();

// check if valid
var_dump($xml->valid());
?>

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Definition and Usage

The valid() function checks whether the current element is valid after a call to rewind() or next().

Syntax

SimpleXMLIterator::valid()

Technical Details

Return Value:	TRUE if element is valid. FALSE otherwise
PHP Version:	5.0+

More Examples

Example

Check whether the current element is valid after a call to rewind() and next():

<?php
$xml = new SimpleXMLIterator('<books><book>Learn PHP</book></books>');

// rewind to the first element
$xml->rewind();

// check if valid
var_dump($xml->valid());

// move to the next element
$xml->next();

// check if valid - will be bool(false) because there is only one element
var_dump($xml->valid());
?>

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❮ PHP SimpleXML Reference