DirectoryIterator::valid
(PHP 5)
DirectoryIterator::valid — Check whether current DirectoryIterator position is a valid file
Beskrivelse
public bool DirectoryIterator::valid
( void
)
Check whether current DirectoryIterator position is a valid file.
Parametre
This function has no parameters.
Returnerings Værdier
Returns TRUE if the position is valid, otherwise FALSE
Eksempler
Eksempel #1 A DirectoryIterator::valid() example
<?php
$iterator = new DirectoryIterator(dirname(__FILE__));
// Loop to end of iterator
while($iterator->valid()) {
$iterator->next();
}
$iterator->valid(); // FALSE
$iterator->rewind();
$iterator->valid(); // TRUE
?>
Se også
- DirectoryIterator::current() - Return the current DirectoryIterator item.
- DirectoryIterator::key() - Return the key for the current DirectoryIterator item
- DirectoryIterator::next() - Move forward to next DirectoryIterator item
- DirectoryIterator::rewind() - Rewind the DirectoryIterator back to the start
- Iterator::valid() - Checks if current position is valid
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