H:/Workspace/php-axiom/www/php-axiom/libraries/axiom/axExtensionFilterIterator.class.php

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<?php
class axExtensionFilterIterator extends FilterIterator {
                
                protected $_ext;
                
                public function __construct (Iterator $iterator, $extension) {
                                parent::__construct($iterator);
                                $this->_ext = (strpos($extension, ',') !== false) ? explode(',', $extension) : (array)$extension;
                }
                
                public function accept () {
                                foreach ($this->_ext as $ext) {
                                                if (strpos((string)$this->current(), $ext) !== false)
                                                                return true;
                                }
                                return false;
                }
}