HashBagOStuff.php

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<?php

class HashBagOStuff extends BagOStuff {
        var $bag;

        function __construct() {
                $this->bag = array();
        }

        protected function expire( $key ) {
                $et = $this->bag[$key][1];

                if ( ( $et == 0 ) || ( $et > time() ) ) {
                        return false;
                }

                $this->delete( $key );

                return true;
        }

        function get( $key ) {
                if ( !isset( $this->bag[$key] ) ) {
                        return false;
                }

                if ( $this->expire( $key ) ) {
                        return false;
                }

                return $this->bag[$key][0];
        }

        function set( $key, $value, $exptime = 0 ) {
                $this->bag[$key] = array( $value, $this->convertExpiry( $exptime ) );
        }

        function delete( $key, $time = 0 ) {
                if ( !isset( $this->bag[$key] ) ) {
                        return false;
                }

                unset( $this->bag[$key] );

                return true;
        }

        function keys() {
                return array_keys( $this->bag );
        }
}