/* * Plugin Name: APCu Object Cache * Description: APCu backend for the WP Object Cache. * Based on Plugin named APCu Object Cache Backend * Plugin URI: https://wordpress.org/plugins/apcu/ * Author: Pierre Schmitz * Author URI: https://pierre-schmitz.com/ * Plugin URI: https://wordpress.org/plugins/apcu/ * * * @Authors James Dugger, Jonathan Bardo * @copyright 2017 GoDaddy Inc. 14455 N. Hayden Road Scottsdale, Arizona */ $oc_logged_in = false; foreach ( $_COOKIE as $k => $v ) { if ( preg_match( '/^comment_author|wordpress_logged_in_[a-f0-9]+|woocommerce_items_in_cart|PHPSESSID_|edd_wp_session|edd_items_in_cartcc_cart_key|ccm_token/', $k ) ) { $oc_logged_in = true; break; } } $oc_blocked_page = ( defined( 'WP_ADMIN' ) || defined( 'DOING_AJAX' ) || defined( 'XMLRPC_REQUEST' ) || 'wp-login.php' === basename( $_SERVER['SCRIPT_FILENAME'] ) ); function wpaas_is_using_apcu() { return version_compare( PHP_VERSION, '5.6.0', '>=' ) && function_exists( 'apcu_fetch' ); } if ( 'cli' !== php_sapi_name() && ! $oc_logged_in && ! $oc_blocked_page && wpaas_is_using_apcu() ) : /** * Save the transients to the DB. The explanation is a bit too long * for code. The tl;dr of it is that we don't have a single 'fast cache' * source yet (like memcached) and so some long lived items like transients * are still best cached in the db and then brought back into APC * * @param string $transient * @param mixed $value * @param int $expire * @param boolean $site = false * * @return bool */ function wpaas_save_transient( $transient, $value, $expire, $site = false ) { global $wp_object_cache, $wpdb; // The 'special' transient option names $transient_timeout = ( $site ? '_site' : '' ) . '_transient_timeout_' . $transient; $transient = ( $site ? '_site' : '' ) . '_transient_' . $transient; // Cap expiration at 24 hours to avoid littering the DB if ( $expire == 0 ) { $expire = 24 * 60 * 60; } // Save to object cache $wp_object_cache->set( $transient, $value, 'options', $expire ); $wp_object_cache->set( $transient_timeout, time() + $expire, 'options', $expire ); // Update alloptions $alloptions = $wp_object_cache->get( 'alloptions', 'options' ); $alloptions[ $transient ] = $value; $alloptions[ $transient_timeout ] = time() + $expire; $wp_object_cache->set( 'alloptions', $alloptions, 'options' ); // Use the normal update option logic if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) { $flag = $wpdb->suppress_errors; $wpdb->suppress_errors( true ); if ( $site && is_multisite() ) { $wpdb->query( $wpdb->prepare( "INSERT INTO `{$wpdb->sitemeta}` ( `option_name`, `option_value`, `autoload` ) VALUES ( %s, UNIX_TIMESTAMP( NOW() ) + %d, 'yes' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );", $transient_timeout, $expire ) ); $wpdb->query( $wpdb->prepare( "INSERT INTO `{$wpdb->sitemeta}` ( `option_name`, `option_value`, `autoload` ) VALUES ( %s, %s, 'no' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );", $transient, maybe_serialize( $value ) ) ); } else { $wpdb->query( $wpdb->prepare( "INSERT INTO `{$wpdb->options}` (`option_name`, `option_value`, `autoload`) VALUES ( %s, UNIX_TIMESTAMP( NOW() ) + %d, 'yes' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );", $transient_timeout, $expire ) ); $wpdb->query( $wpdb->prepare( "INSERT INTO `{$wpdb->options}` (`option_name`, `option_value`, `autoload`) VALUES ( %s, %s, 'no' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );", $transient, maybe_serialize( $value ) ) ); } $wpdb->suppress_errors( $flag ); } return true; } function wpaas_prune_transients() { global $wpdb; if ( ! empty( $wpdb ) && $wpdb instanceof wpdb && function_exists( 'is_main_site' ) && function_exists( 'is_main_network' ) ) { $flag = $wpdb->suppress_errors; $wpdb->suppress_errors( true ); // Lifted straight from schema.php // Deletes all expired transients. // The multi-table delete syntax is used to delete the transient record from table a, // and the corresponding transient_timeout record from table b. $time = time(); $wpdb->query( "DELETE a, b FROM $wpdb->options a, $wpdb->options b WHERE a.option_name LIKE '\_transient\_%' AND a.option_name NOT LIKE '\_transient\_timeout\_%' AND b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) ) AND b.option_value < $time" ); if ( is_main_site() && is_main_network() ) { $wpdb->query( "DELETE a, b FROM $wpdb->options a, $wpdb->options b WHERE a.option_name LIKE '\_site\_transient\_%' AND a.option_name NOT LIKE '\_site\_transient\_timeout\_%' AND b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) ) AND b.option_value < $time" ); } $wpdb->suppress_errors( $flag ); } } /** * If another cache was flushed or updated, sync across all servers / processes using * the database as the authority. This uses the database as the authority for timestamps * as well to avoid drift between servers. * @return void */ function wpaas_init_sync_cache() { global $wpdb; if ( empty( $wpdb ) || ! ( $wpdb instanceof wpdb ) ) { return; } $flag = $wpdb->suppress_errors; $wpdb->suppress_errors( true ); $result = $wpdb->get_results( "SELECT option_name, option_value FROM `{$wpdb->options}` WHERE option_name = 'gd_system_last_cache_flush' UNION SELECT 'current_time', UNIX_TIMESTAMP( NOW() ) AS option_value;", ARRAY_A ); $wpdb->suppress_errors( $flag ); if ( empty( $result ) ) { return; } $master_flush = false; foreach ( $result as $row ) { switch ( $row['option_name'] ) { case 'current_time' : $current_time = $row['option_value']; break; case 'gd_system_last_cache_flush' : $master_flush = $row['option_value']; break; } } $local_flush = wp_cache_get( 'gd_system_last_cache_flush' ); if ( false === $local_flush || $local_flush < $master_flush ) { wp_cache_flush( true ); wp_cache_set( 'gd_system_last_cache_flush', $current_time ); } } /** * Start default implementation of object cache */ if ( ! defined( 'WP_APC_KEY_SALT' ) ) { define( 'WP_APC_KEY_SALT', '' ); } function wp_cache_add( $key, $data, $group = '', $expire = 0 ) { global $wp_object_cache; if ( 'transient' == $group ) { wpaas_save_transient( $key, $data, $expire ); return $wp_object_cache->add( "_transient_$key", $data, 'options', $expire ); } elseif ( 'site-transient' == $group ) { wpaas_save_transient( $key, $data, $expire, true ); return $wp_object_cache->add( "_site_transient_$key", $data, 'site-options', $expire ); } else { return $wp_object_cache->add( $key, $data, $group, $expire ); } } function wp_cache_incr( $key, $n = 1, $group = '' ) { global $wp_object_cache; return $wp_object_cache->incr2( $key, $n, $group ); } function wp_cache_decr( $key, $n = 1, $group = '' ) { global $wp_object_cache; return $wp_object_cache->decr( $key, $n, $group ); } function wp_cache_close() { return true; } function wp_cache_delete( $key, $group = '' ) { global $wp_object_cache, $wpdb; if ( 'transient' == $group ) { if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) { $flag = $wpdb->suppress_errors; $wpdb->suppress_errors( true ); $wpdb->query( $wpdb->prepare( "DELETE FROM `{$wpdb->prefix}options` WHERE option_name IN ( %s, %s );", "_transient_{$key}", "_transient_timeout_{$key}" ) ); $wpdb->suppress_errors( $flag ); } $wp_object_cache->delete( "_transient_timeout_$key", 'options' ); // Update alloptions $alloptions = $wp_object_cache->get( 'alloptions', 'options' ); unset( $alloptions["_transient_$key"] ); unset( $alloptions["_transient_timeout_$key"] ); $wp_object_cache->set( 'alloptions', $alloptions, 'options' ); return $wp_object_cache->delete( "_transient_$key", 'options' ); } elseif ( 'site-transient' == $group ) { if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) { $table = $wpdb->options; if ( is_multisite() ) { $table = $wpdb->sitemeta; } $flag = $wpdb->suppress_errors; $wpdb->suppress_errors( true ); $wpdb->query( $wpdb->prepare( "DELETE FROM `{$table}` WHERE option_name IN ( %s, %s );", "_transient_{$key}", "_transient_timeout_{$key}" ) ); $wpdb->suppress_errors( $flag ); } $wp_object_cache->delete( "_transient_timeout_$key", 'site-options' ); // Update alloptions $alloptions = $wp_object_cache->get( 'alloptions', 'options' ); unset( $alloptions["_site_transient_$key"] ); unset( $alloptions["_site_transient_timeout_$key"] ); $wp_object_cache->set( 'alloptions', $alloptions, 'options' ); return $wp_object_cache->delete( "_site_transient_$key", 'site-options' ); } return $wp_object_cache->delete( $key, $group ); } function wp_cache_flush( $local_flush = false ) { global $wp_object_cache, $wpdb; if ( ! $local_flush ) { if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) { $flag = $wpdb->suppress_errors; $wpdb->suppress_errors( true ); $wpdb->query( "INSERT INTO `{$wpdb->options}` (`option_name`, `option_value`, `autoload`) VALUES ( 'gd_system_last_cache_flush', UNIX_TIMESTAMP( NOW() ), 'no' ) ON DUPLICATE KEY UPDATE `option_name` = VALUES ( `option_name` ), `option_value` = VALUES ( `option_value` ), `autoload` = VALUES ( `autoload` );" ); $wpdb->suppress_errors( $flag ); } } return $wp_object_cache->flush(); } function wp_cache_get( $key, $group = '', $force = false ) { global $wp_object_cache, $wpdb; if ( 'transient' == $group ) { $alloptions = $wp_object_cache->get( 'alloptions', 'options' ); if ( isset( $alloptions["_transient_$key"] ) && isset( $alloptions["_transient_timeout_$key"] ) && $alloptions["_transient_timeout_$key"] > time() ) { return maybe_unserialize( $alloptions["_transient_$key"] ); } $transient = $wp_object_cache->get( "_transient_$key", 'options', $force ); $timeout = $wp_object_cache->get( "_transient_timeout_$key", 'options', $force ); if ( false !== $transient && ! empty( $timeout ) && $timeout > time() ) { return maybe_unserialize( $transient ); } if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) { $flag = $wpdb->suppress_errors; $wpdb->suppress_errors( true ); $result = $wpdb->get_results( $wpdb->prepare( "SELECT option_name, option_value FROM `{$wpdb->options}` WHERE option_name IN ( %s, %s ) UNION SELECT 'current_time', UNIX_TIMESTAMP( NOW() ) AS option_value;", "_transient_{$key}", "_transient_timeout_{$key}" ), ARRAY_A ); $wpdb->suppress_errors( $flag ); if ( ! empty( $result ) ) { $transient = false; $timeout = false; $current_time = time(); foreach ( $result as $row ) { switch ( $row['option_name'] ) { case "_transient_$key" : $transient = $row['option_value']; break; case "_transient_timeout_$key" : $timeout = $row['option_value']; break; case 'current_time' : $current_time = $row['option_value']; break; } } if ( false !== $transient && ! empty( $timeout ) && $timeout > $current_time ) { return maybe_unserialize( $transient ); } } } return false; } elseif ( 'site-transient' == $group ) { $transient = $wp_object_cache->get( "_site_transient_$key", 'options', $force ); $timeout = $wp_object_cache->get( "_site_transient_timeout_$key", 'options', $force ); if ( false !== $transient && ! empty( $timeout ) && $timeout > time() ) { return maybe_unserialize( $transient ); } if ( ! empty( $wpdb ) && $wpdb instanceof wpdb ) { $table = $wpdb->options; if ( is_multisite() ) { $table = $wpdb->sitemeta; } $flag = $wpdb->suppress_errors; $wpdb->suppress_errors( true ); $result = $wpdb->get_results( $wpdb->prepare( "SELECT option_name, option_value FROM `{$table}` WHERE option_name IN ( %s, %s ) UNION SELECT 'current_time', UNIX_TIMESTAMP( NOW() ) AS option_value;", "_site_transient_{$key}", "_site_transient_timeout_{$key}" ), ARRAY_A ); $wpdb->suppress_errors( $flag ); if ( ! empty( $result ) ) { $transient = false; $timeout = false; $current_time = time(); foreach ( $result as $row ) { switch ( $row['option_name'] ) { case "_site_transient_$key" : $transient = $row['option_value']; break; case "_site_transient_timeout_$key" : $timeout = $row['option_value']; break; case 'current_time' : $current_time = $row['option_value']; break; } } if ( false !== $transient && ! empty( $timeout ) && $timeout > $current_time ) { return maybe_unserialize( $transient ); } } } return false; } else { return $wp_object_cache->get( $key, $group, $force ); } } function wp_cache_init() { global $wp_object_cache; if ( mt_rand( 1, 100 ) == 42 ) { wpaas_prune_transients(); } add_action( 'muplugins_loaded', 'wpaas_init_sync_cache' ); $wp_object_cache = new APCu_Object_Cache(); } function wp_cache_replace( $key, $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->replace( $key, $data, $group, $expire ); } function wp_cache_set( $key, $data, $group = '', $expire = 0 ) { global $wp_object_cache; if ( defined( 'WP_INSTALLING' ) == false ) { if ( 'transient' == $group ) { return wpaas_save_transient( $key, $data, $expire ); } elseif ( 'site-transient' == $group ) { return wpaas_save_transient( $key, $data, $expire, true ); } else { return $wp_object_cache->set( $key, $data, $group, $expire ); } } else { return $wp_object_cache->delete( $key, $group ); } } function wp_cache_switch_to_blog( $blog_id ) { global $wp_object_cache; return $wp_object_cache->switch_to_blog( $blog_id ); } function wp_cache_add_global_groups( $groups ) { global $wp_object_cache; $wp_object_cache->add_global_groups( $groups ); } function wp_cache_add_non_persistent_groups( $groups ) { global $wp_object_cache; $wp_object_cache->add_non_persistent_groups( $groups ); } class GD_APCu_Object_Cache { private $prefix = ''; private $local_cache = array(); private $global_groups = array(); private $non_persistent_groups = array(); private $multisite = false; private $blog_prefix = ''; public function __construct() { global $table_prefix; $this->multisite = is_multisite(); $this->blog_prefix = $this->multisite ? get_current_blog_id() . ':' : ''; $this->prefix = DB_HOST . '.' . DB_NAME . '.' . $table_prefix; } private function get_group( $group ) { return empty( $group ) ? 'default' : $group; } private function get_key( $group, $key ) { if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) { return $this->prefix . '.' . $group . '.' . $this->blog_prefix . ':' . $key; } else { return $this->prefix . '.' . $group . '.' . $key; } } public function add( $key, $data, $group = 'default', $expire = 0 ) { $group = $this->get_group( $group ); $key = $this->get_key( $group, $key ); if ( function_exists( 'wp_suspend_cache_addition' ) && wp_suspend_cache_addition() ) { return false; } if ( isset( $this->local_cache[ $group ][ $key ] ) ) { return false; } // FIXME: Somehow apcu_add does not return false if key already exists if ( ! isset( $this->non_persistent_groups[ $group ] ) && apcu_exists( $key ) ) { return false; } if ( is_object( $data ) ) { $this->local_cache[ $group ][ $key ] = clone $data; } else { $this->local_cache[ $group ][ $key ] = $data; } if ( ! isset( $this->non_persistent_groups[ $group ] ) ) { return apcu_add( $key, $data, (int) $expire ); } return true; } public function add_global_groups( $groups ) { if ( is_array( $groups ) ) { foreach ( $groups as $group ) { $this->global_groups[ $group ] = true; } } else { $this->global_groups[ $groups ] = true; } } public function add_non_persistent_groups( $groups ) { if ( is_array( $groups ) ) { foreach ( $groups as $group ) { $this->non_persistent_groups[ $group ] = true; } } else { $this->non_persistent_groups[ $groups ] = true; } } public function decr( $key, $offset = 1, $group = 'default' ) { if ( $offset < 0 ) { return $this->incr( $key, abs( $offset ), $group ); } $group = $this->get_group( $group ); $key = $this->get_key( $group, $key ); if ( isset( $this->local_cache[ $group ][ $key ] ) && $this->local_cache[ $group ][ $key ] - $offset >= 0 ) { $this->local_cache[ $group ][ $key ] -= $offset; } else { $this->local_cache[ $group ][ $key ] = 0; } if ( isset( $this->non_persistent_groups[ $group ] ) ) { return $this->local_cache[ $group ][ $key ]; } else { $value = apcu_dec( $key, $offset ); if ( $value < 0 ) { apcu_store( $key, 0 ); return 0; } return $value; } } public function delete( $key, $group = 'default', $force = false ) { $group = $this->get_group( $group ); $key = $this->get_key( $group, $key ); unset( $this->local_cache[ $group ][ $key ] ); if ( ! isset( $this->non_persistent_groups[ $group ] ) ) { return apcu_delete( $key ); } return true; } public function flush() { $this->local_cache = array(); // TODO: only clear our own entries apcu_clear_cache(); return true; } public function get( $key, $group = 'default', $force = false, &$found = null ) { $group = $this->get_group( $group ); $key = $this->get_key( $group, $key ); if ( ! $force && isset( $this->local_cache[ $group ][ $key ] ) ) { $found = true; if ( is_object( $this->local_cache[ $group ][ $key ] ) ) { return clone $this->local_cache[ $group ][ $key ]; } else { return $this->local_cache[ $group ][ $key ]; } } elseif ( isset( $this->non_persistent_groups[ $group ] ) ) { $found = false; return false; } else { $value = @apcu_fetch( $key, $found ); if ( $found ) { if ( $force ) { $this->local_cache[ $group ][ $key ] = $value; } return $value; } else { return false; } } } public function incr2( $key, $offset = 1, $group = 'default' ) { if ( $offset < 0 ) { return $this->decr( $key, abs( $offset ), $group ); } $group = $this->get_group( $group ); $key = $this->get_key( $group, $key ); if ( isset( $this->local_cache[ $group ][ $key ] ) && $this->local_cache[ $group ][ $key ] + $offset >= 0 ) { $this->local_cache[ $group ][ $key ] += $offset; } else { $this->local_cache[ $group ][ $key ] = 0; } if ( isset( $this->non_persistent_groups[ $group ] ) ) { return $this->local_cache[ $group ][ $key ]; } else if ( function_exists( 'apcu_inc' ) ) { $value = apcu_inc( $key, $offset ); if ( $value < 0 ) { apcu_store( $key, 0 ); return 0; } return $value; } return false; } public function replace( $key, $data, $group = 'default', $expire = 0 ) { $group = $this->get_group( $group ); $key = $this->get_key( $group, $key ); if ( isset( $this->non_persistent_groups[ $group ] ) ) { if ( ! isset( $this->local_cache[ $group ][ $key ] ) ) { return false; } } else { if ( ! isset( $this->local_cache[ $group ][ $key ] ) && ! apcu_exists( $key ) ) { return false; } apcu_store( $key, $data, (int) $expire ); } if ( is_object( $data ) ) { $this->local_cache[ $group ][ $key ] = clone $data; } else { $this->local_cache[ $group ][ $key ] = $data; } return true; } public function reset() { // This function is deprecated as of WordPress 3.5 // Be safe and flush the cache if this function is still used $this->flush(); } public function set( $key, $data, $group = 'default', $expire = 0 ) { $group = $this->get_group( $group ); $key = $this->get_key( $group, $key ); if ( is_object( $data ) ) { $this->local_cache[ $group ][ $key ] = clone $data; } else { $this->local_cache[ $group ][ $key ] = $data; } if ( ! isset( $this->non_persistent_groups[ $group ] ) ) { return apcu_store( $key, $data, (int) $expire ); } return true; } public function stats() { // Only implemented because the default cache class provides this. // This method is never called. echo ''; } public function switch_to_blog( $blog_id ) { $this->blog_prefix = $this->multisite ? $blog_id . ':' : ''; } } if ( function_exists( 'apcu_inc' ) ) { class APCu_Object_Cache extends GD_APCu_Object_Cache { function incr( $key, $offset = 1, $group = 'default' ) { return parent::incr2( $key, $offset, $group ); } } } else { class APCu_Object_Cache extends GD_APCu_Object_Cache { // Blank } } endif; A family murder in Vienna, 1945 - Old Pictures
Photo of a day

A family murder in Vienna, 1945

1 Mins read

A family murder in Vienna, 1945It’s another famous photograph by Evgeny Khaldei, the author of the legendary photo “The flag over the Reichstag.” This shot is not so monumental, but it’s also a fascinating one. Khaldei took this photo of the family murder in April 1945 in Vienna. It depicts a dead Austrian family, watched by living Russian officers. 

Check the most Bizarre WWII photos.

A killer shot a mother and her two children: a teenage boy and a girl, whose body was lying a little further away. Their father killed them.

Evgeny Khaldei recalled the story of this photograph: “I went to the park near the parliament building to film the columns of soldiers passing by. And I saw this picture. A woman was sitting on a bench, killed by two shots – in the head and neck; next to her is a dead teenager of about fifteen and a girl. The corpse of the father of the family was a little further away. He had a gold NSDAP badge on his lapel, and a revolver was lying next to him. Soon a witness of this Vienna murder approached the photographer and the officers. He told them that the German first killed his family and then shot himself.

A different angle, murder in Vienna

A different angle of the murder in Vienna, 1945

After the Soviet army captured Vienna, the nine-year occupation period started. The city was split between the allies, and the Russians maintained a strict borders control regime. Here you can check some noteworthy archive photos from Vienna’s Soviet occupation zone, taken in the 1940s.

 

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