bool DirectoryIterator::valid (void)Parameters:this function takes no parameters.Return value:this function returns TRUE if the position is correct, otherwise it returns FALSE.The following programs illustrate the DirectoryIterator::valid() function in PHP:Program 1:
php
// Create an Iterator directory
$directory
=
new
DirectoryIterator (dirname (
__ FILE__
));
// Move to third element
$directory
-> seek (2);
// Check if the catalog item is correct
if
(
$directory
-> valid()) {
// Show file name
echo
$directory
-> getFilename();
}
?>
Output:applications.htmlProgram 2:
php
// Create an Iterator directory
$directory
=
new
DirectoryIterator (dirname (
__ FILE__
));
// Loop while the directory is valid
while
(
$directory
-> valid()) {
// Validate a catalog item
if
(
$directory
-> isDir()) {
// Show key and file name
echo
$directory
-> key().
"= >"
.
$directory
-> getFilename().
"
"
;
}
// Move to next item
$directory
-> next();
}
?>
Output:0 = > ... 1 = > .. 4 = > dashboard 8 = > img 11 = > webalizer 12 = > xampp
Note . The output of this function depends on the contents of the server folder.Link: https : //www.php.net/manual/en/directoryiterator.valid.php
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