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:
// 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.html
Program 2:
// 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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