Ticket #20875: 20875-implementation-apc.php

<?php

public function get_multi( $keys ) {
        $values = $fetch_keys = $key_map = array();
        foreach ( $keys as $group => $group_keys ) {
                foreach ( $group_keys as $group_key ) {
                        $key = $this->key( $group_key, $group );

                        if ( isset( $this->cache[ $key ] ) && in_array( $group, $this->no_mc_groups ) ) {
                                if ( is_object( $this->cache[ $key ] ) ) {
                                        $values[ $group ][ $group_key ] = clone $this->cache[ $key ];
                                } else {
                                        $values[ $group ][ $group_key ] = $this->cache[ $key ];
                                }
                        } elseif ( in_array( $group, $this->no_mc_groups ) ) {
                                $this->cache[ $key ] = $values[ $group ][ $group_key ] = false;
                        } else {
                                $fetch_keys[] = $key;
                                $key_map[ $key ] = array(
                                        'group' => $group,
                                        'group_key' => $group_key,
                                );
                        }
                }
        }

        $values = array();

        if ( $fetch_keys ) {
                $fetched = apc_fetch( $fetch_keys );

                foreach ( $fetch_keys as $fetch_key ) {
                        $group     = $key_map[ $fetch_key ]['group'];
                        $group_key = $key_map[ $fetch_key ]['group_key'];

                        if ( isset( $fetched[ $fetch_key ] ) ) {
                                $fetched_value = $fetched[ $fetch_key ];
                                if ( is_object( $fetched_value ) && 'ArrayObject' == get_class( $fetched_value ) ) {
                                        $fetched_value = $fetched_value->getArrayCopy();
                                }

                                if ( null === $fetched_value ) {
                                        $fetched_value = false;
                                }

                                $this->cache[ $key ] = ( is_object( $fetched_value ) ) ? clone $fetched_value : $fetched_value;
                                $values[ $group ][ $group_key ] = $this->cache[ $key ];

                        } else {
                                $this->cache[ $key ] = false;
                                $values[ $group ][ $group_key ] = false;
                        }
                }
        }

        @ ++$this->stats['get'];

        return $values;
}