object-cache.php file from your content directory.' );
}
// Users with setups where multiple installs share a common wp-config.php can use this
// to guarantee uniqueness for the keys generated by this object cache
if ( !defined( 'WP_APC_KEY_SALT' ) )
define( 'WP_APC_KEY_SALT', 'wp' );
function &apc_get_cache() {
global $wp_object_cache;
return $wp_object_cache;
}
function wp_cache_add( $key, $data, $flag = '', $expire = 0 ) {
return apc_get_cache()->add( $key, $data, $flag, $expire );
}
function wp_cache_incr( $key, $n = 1, $flag = '' ) {
return apc_get_cache()->incr2( $key, $n, $flag );
}
function wp_cache_decr( $key, $n = 1, $flag = '' ) {
return apc_get_cache()->decr( $key, $n, $flag );
}
function wp_cache_close() {
return true;
}
function wp_cache_delete( $id, $flag = '' ) {
return apc_get_cache()->delete( $id, $flag );
}
function wp_cache_flush() {
return apc_get_cache()->flush();
}
function wp_cache_get( $id, $flag = '' ) {
return apc_get_cache()->get( $id, $flag );
}
function wp_cache_init() {
global $wp_object_cache;
$wp_object_cache = new APC_Object_Cache();
}
function wp_cache_replace( $key, $data, $flag = '', $expire = 0 ) {
return apc_get_cache()->replace( $key, $data, $flag, $expire );
}
function wp_cache_set( $key, $data, $flag = '', $expire = 0 ) {
if ( defined('WP_INSTALLING') == false )
return apc_get_cache()->set( $key, $data, $flag, $expire );
else
return apc_get_cache()->delete( $key, $flag );
}
function wp_cache_add_global_groups( $groups ) {
apc_get_cache()->add_global_groups( $groups );
}
function wp_cache_add_non_persistent_groups( $groups ) {
apc_get_cache()->add_non_persistent_groups( $groups );
}
class WP_Object_Cache {
var $global_groups = array( 'users', 'userlogins', 'usermeta', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss' );
var $no_mc_groups = array( 'comment', 'counts' );
var $autoload_groups = array( 'options' );
var $cache = array();
var $stats = array();
var $group_ops = array();
var $cache_enabled = true;
var $default_expiration = 0;
var $debug = false;
var $abspath = '';
function add( $id, $data, $group = 'default', $expire = 0 ) {
$key = $this->key( $id, $group );
if ( in_array( $group, $this->no_mc_groups ) ) {
$this->cache[$key] = $data;
return true;
}
$expire = ( $expire == 0 ) ? $this->default_expiration : $expire;
if ( is_array( $data ) )
$store_data = new ArrayObject( $data );
else
$store_data =& $data;
$result = apc_add( $key, $store_data, $expire );
@ ++$this->stats['add'];
$this->group_ops[$group][] = "add $id";
$this->cache[$key] = $data;
return $result;
}
function add_global_groups( $groups ) {
if ( !is_array( $groups ) )
$groups = (array) $groups;
$this->global_groups = array_merge( $this->global_groups, $groups );
$this->global_groups = array_unique( $this->global_groups );
}
function add_non_persistent_groups( $groups ) {
if ( !is_array( $groups ) )
$groups = (array) $groups;
$this->no_mc_groups = array_merge( $this->no_mc_groups, $groups );
$this->no_mc_groups = array_unique( $this->no_mc_groups );
}
// This is named incr2 because Batcache looks for incr
// We will define that in a class extension if it is available (APC 3.1.1 or higher)
function incr2( $id, $n, $group ) {
$key = $this->key( $id, $group );
if ( function_exists( 'apc_inc' ) )
return apc_inc( $key, $n );
else
return false;
}
function decr( $id, $n, $group ) {
$key = $this->key( $id, $group );
if ( function_exists( 'apc_dec' ) )
return apc_dec( $id, $n );
else
return false;
}
function close() {
return true;
}
function delete( $id, $group = 'default' ) {
$key = $this->key( $id, $group );
if ( in_array( $group, $this->no_mc_groups ) ) {
unset( $this->cache[$key] );
return true;
}
$result = apc_delete( $key );
@ ++$this->stats['delete'];
$this->group_ops[$group][] = "delete $id";
unset( $this->cache[$key] );
return $result;
}
function flush() {
return apc_clear_cache( 'user' );
}
function get( $id, $group = 'default' ) {
$key = $this->key( $id, $group );
if ( isset( $this->cache[$key] ) )
$value = $this->cache[$key];
elseif ( in_array( $group, $this->no_mc_groups ) )
$value = false;
else {
$value = apc_fetch( $key );
if ( is_object( $value ) && 'ArrayObject' == get_class( $value ) )
$value = $value->getArrayCopy();
}
@ ++$this->stats['get'];
$this->group_ops[$group][] = "get $id";
if ( NULL === $value )
$value = false;
$this->cache[$key] = $value;
if ( 'checkthedatabaseplease' == $value )
$value = false;
return $value;
}
function key( $key, $group ) {
global $blog_id;
if ( empty( $group ) )
$group = 'default';
if ( false !== array_search( $group, $this->global_groups ) )
$prefix = '';
else
$prefix = $blog_id . ':';
return WP_APC_KEY_SALT . ':' . $this->abspath . ":$prefix$group:$key";
}
function replace( $id, $data, $group = 'default', $expire = 0 ) {
return $this->set( $id, $data, $group, $expire );
}
function set( $id, $data, $group = 'default', $expire = 0 ) {
$key = $this->key( $id, $group );
if ( isset( $this->cache[$key] ) && ('checkthedatabaseplease' == $this->cache[$key] ) )
return false;
$this->cache[$key] = $data;
if ( in_array( $group, $this->no_mc_groups ) )
return true;
$expire = ( $expire == 0 ) ? $this->default_expiration : $expire;
if ( is_array( $data ) )
$data = new ArrayObject( $data );
$result = apc_store( $key, $data, $expire );
return $result;
}
function colorize_debug_line( $line ) {
$colors = array(
'get' => 'green',
'set' => 'purple',
'add' => 'blue',
'delete' => 'red'
);
$cmd = substr( $line, 0, strpos( $line, ' ' ) );
$cmd2 = "$cmd";
return $cmd2 . substr( $line, strlen( $cmd ) ) . "\n";
}
function stats() {
echo "\n";
foreach ( $this->stats as $stat => $n ) {
echo "$stat $n";
echo "
\n";
}
echo "
\n";
$lines = array();
foreach ( $ops as $op ) {
$lines[] = $this->colorize_debug_line($op);
}
print_r($lines);
echo "\n";
}
if ( $this->debug ) {
$apc_info = apc_cache_info();
echo "";
echo "Cache Hits: {$apc_info['num_hits']}
\n";
echo "Cache Misses: {$apc_info['num_misses']}\n";
echo "