| @@ -1,600 +1,600 @@ | ||
| 1 | -<?php | |
| 2 | -/** | |
| 3 | - * Class LP_Object_Cache | |
| 4 | - */ | |
| 5 | - | |
| 6 | -class LP_Object_Cache { | |
| 7 | - | |
| 8 | - /** | |
| 9 | - * Holds the cached objects. | |
| 10 | - * | |
| 11 | - * @since 2.0.0 | |
| 12 | - * @var array | |
| 13 | - */ | |
| 14 | - private $cache = array(); | |
| 15 | - | |
| 16 | - /** | |
| 17 | - * The amount of times the cache data was already stored in the cache. | |
| 18 | - * | |
| 19 | - * @since 2.5.0 | |
| 20 | - * @var int | |
| 21 | - */ | |
| 22 | - public $cache_hits = 0; | |
| 23 | - | |
| 24 | - /** | |
| 25 | - * Amount of times the cache did not have the request in cache. | |
| 26 | - * | |
| 27 | - * @since 2.0.0 | |
| 28 | - * @var int | |
| 29 | - */ | |
| 30 | - public $cache_misses = 0; | |
| 31 | - | |
| 32 | - /** | |
| 33 | - * List of global cache groups. | |
| 34 | - * | |
| 35 | - * @since 3.0.0 | |
| 36 | - * @var array | |
| 37 | - */ | |
| 38 | - protected $global_groups = array(); | |
| 39 | - | |
| 40 | - /** | |
| 41 | - * The blog prefix to prepend to keys in non-global groups. | |
| 42 | - * | |
| 43 | - * @since 3.5.0 | |
| 44 | - * @var int | |
| 45 | - */ | |
| 46 | - private $blog_prefix; | |
| 47 | - | |
| 48 | - /** | |
| 49 | - * Holds the value of is_multisite(). | |
| 50 | - * | |
| 51 | - * @since 3.5.0 | |
| 52 | - * @var bool | |
| 53 | - */ | |
| 54 | - private $multisite; | |
| 55 | - | |
| 56 | - /** | |
| 57 | - * @var bool | |
| 58 | - */ | |
| 59 | - protected static $_use_core = false; | |
| 60 | - | |
| 61 | - /** | |
| 62 | - * @var LP_Object_Cache | |
| 63 | - */ | |
| 64 | - protected static $instance = null; | |
| 65 | - | |
| 66 | - /** | |
| 67 | - * @return LP_Object_Cache | |
| 68 | - */ | |
| 69 | - public static function instance() { | |
| 70 | - if ( ! self::$instance ) { | |
| 71 | - self::$instance = new self(); | |
| 72 | - } | |
| 73 | - | |
| 74 | - return self::$instance; | |
| 75 | - } | |
| 76 | - | |
| 77 | - public static function init() { | |
| 78 | - // add_action( 'shutdown', array( __CLASS__, 'wp_cache_flush' ), 9999 ); | |
| 79 | - } | |
| 80 | - | |
| 81 | - public static function wp_cache_flush() { | |
| 82 | - | |
| 83 | - } | |
| 84 | - | |
| 85 | - public static function get_group( $group ) { | |
| 86 | - if ( self::$_use_core ) { | |
| 87 | - if ( false === strpos( $group, 'learn-press/' ) ) { | |
| 88 | - return "learn-press/{$group}"; | |
| 89 | - } | |
| 90 | - } | |
| 91 | - | |
| 92 | - return $group; | |
| 93 | - } | |
| 94 | - | |
| 95 | - /** | |
| 96 | - * Makes private properties readable for backward compatibility. | |
| 97 | - * | |
| 98 | - * @param string $name Property to get. | |
| 99 | - * | |
| 100 | - * @return mixed Property. | |
| 101 | - * @since 4.0.0 | |
| 102 | - * | |
| 103 | - */ | |
| 104 | - public function __get( $name ) { | |
| 105 | - return $this->$name; | |
| 106 | - } | |
| 107 | - | |
| 108 | - /** | |
| 109 | - * Makes private properties settable for backward compatibility. | |
| 110 | - * | |
| 111 | - * @param string $name Property to set. | |
| 112 | - * @param mixed $value Property value. | |
| 113 | - * | |
| 114 | - * @return mixed Newly-set property. | |
| 115 | - * @since 4.0.0 | |
| 116 | - * | |
| 117 | - */ | |
| 118 | - public function __set( $name, $value ) { | |
| 119 | - return $this->$name = $value; | |
| 120 | - } | |
| 121 | - | |
| 122 | - /** | |
| 123 | - * Makes private properties checkable for backward compatibility. | |
| 124 | - * | |
| 125 | - * @param string $name Property to check if set. | |
| 126 | - * | |
| 127 | - * @return bool Whether the property is set. | |
| 128 | - * @since 4.0.0 | |
| 129 | - * | |
| 130 | - */ | |
| 131 | - public function __isset( $name ) { | |
| 132 | - return isset( $this->$name ); | |
| 133 | - } | |
| 134 | - | |
| 135 | - /** | |
| 136 | - * Makes private properties un-settable for backward compatibility. | |
| 137 | - * | |
| 138 | - * @param string $name Property to unset. | |
| 139 | - * | |
| 140 | - * @since 4.0.0 | |
| 141 | - * | |
| 142 | - */ | |
| 143 | - public function __unset( $name ) { | |
| 144 | - unset( $this->$name ); | |
| 145 | - } | |
| 146 | - | |
| 147 | - /** | |
| 148 | - * Adds data to the cache if it doesn't already exist. | |
| 149 | - * | |
| 150 | - * @param int|string $key What to call the contents in the cache. | |
| 151 | - * @param mixed $data The contents to store in the cache. | |
| 152 | - * @param string $group Optional. Where to group the cache contents. Default 'default'. | |
| 153 | - * @param int $expire Optional. When to expire the cache contents. Default 0 (no expiration). | |
| 154 | - * | |
| 155 | - * @return bool False if cache key and group already exist, true on success | |
| 156 | - * @uses WP_Object_Cache::set() Sets the data after the checking the cache | |
| 157 | - * contents existence. | |
| 158 | - * | |
| 159 | - * @since 2.0.0 | |
| 160 | - * | |
| 161 | - * @uses WP_Object_Cache::_exists() Checks to see if the cache already has data. | |
| 162 | - */ | |
| 163 | - public static function add( $key, $data, $group = 'default', $expire = 0 ) { | |
| 164 | - | |
| 165 | - $group = self::get_group( $group ); | |
| 166 | - | |
| 167 | - if ( self::$_use_core ) { | |
| 168 | - return wp_cache_add( $key, $data, $group, $expire ); | |
| 169 | - } | |
| 170 | - | |
| 171 | - if ( wp_suspend_cache_addition() ) { | |
| 172 | - return false; | |
| 173 | - } | |
| 174 | - | |
| 175 | - if ( empty( $group ) ) { | |
| 176 | - $group = 'default'; | |
| 177 | - } | |
| 178 | - | |
| 179 | - $self = self::instance(); | |
| 180 | - | |
| 181 | - $id = $key; | |
| 182 | - if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 183 | - $id = $self->blog_prefix . $key; | |
| 184 | - } | |
| 185 | - | |
| 186 | - if ( self::_exists( $id, $group ) ) { | |
| 187 | - return false; | |
| 188 | - } | |
| 189 | - | |
| 190 | - return self::set( $key, $data, $group, (int) $expire ); | |
| 191 | - } | |
| 192 | - | |
| 193 | - /** | |
| 194 | - * Sets the list of global cache groups. | |
| 195 | - * | |
| 196 | - * @param array $groups List of groups that are global. | |
| 197 | - * | |
| 198 | - * @since 3.0.0 | |
| 199 | - * | |
| 200 | - */ | |
| 201 | - public static function add_global_groups( $groups ) { | |
| 202 | - $groups = (array) $groups; | |
| 203 | - $self = self::instance(); | |
| 204 | - | |
| 205 | - $groups = array_fill_keys( $groups, true ); | |
| 206 | - $self->global_groups = array_merge( $self->global_groups, $groups ); | |
| 207 | - } | |
| 208 | - | |
| 209 | - /** | |
| 210 | - * Decrements numeric cache item's value. | |
| 211 | - * | |
| 212 | - * @param int|string $key The cache key to decrement. | |
| 213 | - * @param int $offset Optional. The amount by which to decrement the item's value. Default 1. | |
| 214 | - * @param string $group Optional. The group the key is in. Default 'default'. | |
| 215 | - * | |
| 216 | - * @return false|int False on failure, the item's new value on success. | |
| 217 | - * @since 3.3.0 | |
| 218 | - * | |
| 219 | - */ | |
| 220 | - public static function decr( $key, $offset = 1, $group = 'default' ) { | |
| 221 | - if ( empty( $group ) ) { | |
| 222 | - $group = 'default'; | |
| 223 | - } | |
| 224 | - | |
| 225 | - $self = self::instance(); | |
| 226 | - | |
| 227 | - if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 228 | - $key = $self->blog_prefix . $key; | |
| 229 | - } | |
| 230 | - | |
| 231 | - if ( ! self::_exists( $key, $group ) ) { | |
| 232 | - return false; | |
| 233 | - } | |
| 234 | - | |
| 235 | - if ( ! is_numeric( $self->cache[ $group ][ $key ] ) ) { | |
| 236 | - $self->cache[ $group ][ $key ] = 0; | |
| 237 | - } | |
| 238 | - | |
| 239 | - $offset = (int) $offset; | |
| 240 | - | |
| 241 | - $self->cache[ $group ][ $key ] -= $offset; | |
| 242 | - | |
| 243 | - if ( $self->cache[ $group ][ $key ] < 0 ) { | |
| 244 | - $self->cache[ $group ][ $key ] = 0; | |
| 245 | - } | |
| 246 | - | |
| 247 | - return $self->cache[ $group ][ $key ]; | |
| 248 | - } | |
| 249 | - | |
| 250 | - /** | |
| 251 | - * Removes the contents of the cache key in the group. | |
| 252 | - * | |
| 253 | - * If the cache key does not exist in the group, then nothing will happen. | |
| 254 | - * | |
| 255 | - * @param int|string $key What the contents in the cache are called. | |
| 256 | - * @param string $group Optional. Where the cache contents are grouped. Default 'default'. | |
| 257 | - * @param bool $deprecated Optional. Unused. Default false. | |
| 258 | - * | |
| 259 | - * @return bool False if the contents weren't deleted and true on success. | |
| 260 | - * @since 2.0.0 | |
| 261 | - * | |
| 262 | - */ | |
| 263 | - public static function delete( $key, $group = 'default', $deprecated = false ) { | |
| 264 | - | |
| 265 | - $group = self::get_group( $group ); | |
| 266 | - | |
| 267 | - if ( self::$_use_core ) { | |
| 268 | - return wp_cache_delete( $key, $group ); | |
| 269 | - } | |
| 270 | - | |
| 271 | - if ( empty( $group ) ) { | |
| 272 | - $group = 'default'; | |
| 273 | - } | |
| 274 | - | |
| 275 | - $self = self::instance(); | |
| 276 | - | |
| 277 | - if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 278 | - $key = $self->blog_prefix . $key; | |
| 279 | - } | |
| 280 | - | |
| 281 | - if ( ! self::_exists( $key, $group ) ) { | |
| 282 | - return false; | |
| 283 | - } | |
| 284 | - | |
| 285 | - unset( $self->cache[ $group ][ $key ] ); | |
| 286 | - | |
| 287 | - return true; | |
| 288 | - } | |
| 289 | - | |
| 290 | - /** | |
| 291 | - * Clears the object cache of all data. | |
| 292 | - * | |
| 293 | - * @return true Always returns true. | |
| 294 | - * @since 2.0.0 | |
| 295 | - * | |
| 296 | - */ | |
| 297 | - public static function flush() { | |
| 298 | - | |
| 299 | - if ( self::$_use_core ) { | |
| 300 | - // return wp_cache_flush(); | |
| 301 | - } | |
| 302 | - | |
| 303 | - $self = self::instance(); | |
| 304 | - | |
| 305 | - $self->cache = array(); | |
| 306 | - | |
| 307 | - return true; | |
| 308 | - } | |
| 309 | - | |
| 310 | - /** | |
| 311 | - * Retrieves the cache contents, if it exists. | |
| 312 | - * | |
| 313 | - * The contents will be first attempted to be retrieved by searching by the | |
| 314 | - * key in the cache group. If the cache is hit (success) then the contents | |
| 315 | - * are returned. | |
| 316 | - * | |
| 317 | - * On failure, the number of cache misses will be incremented. | |
| 318 | - * | |
| 319 | - * @param int|string $key What the contents in the cache are called. | |
| 320 | - * @param string $group Optional. Where the cache contents are grouped. Default 'default'. | |
| 321 | - * @param string $force Optional. Unused. Whether to force a refetch rather than relying on the local | |
| 322 | - * cache. Default false. | |
| 323 | - * @param bool $found Optional. Whether the key was found in the cache (passed by reference). | |
| 324 | - * Disambiguates a return of false, a storable value. Default null. | |
| 325 | - * | |
| 326 | - * @return false|mixed False on failure to retrieve contents or the cache contents on success. | |
| 327 | - * @since 2.0.0 | |
| 328 | - * | |
| 329 | - */ | |
| 330 | - public static function get( $key, $group = 'default', $force = false, &$found = null ) { | |
| 331 | - $group = self::get_group( $group ); | |
| 332 | - | |
| 333 | - if ( self::$_use_core ) { | |
| 334 | - return wp_cache_get( $key, $group, $force, $found ); | |
| 335 | - } | |
| 336 | - | |
| 337 | - if ( empty( $group ) ) { | |
| 338 | - $group = 'default'; | |
| 339 | - } | |
| 340 | - | |
| 341 | - $self = self::instance(); | |
| 342 | - | |
| 343 | - if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 344 | - $key = $self->blog_prefix . $key; | |
| 345 | - } | |
| 346 | - | |
| 347 | - if ( self::_exists( $key, $group ) ) { | |
| 348 | - $found = true; | |
| 349 | - $self->cache_hits += 1; | |
| 350 | - if ( is_object( $self->cache[ $group ][ $key ] ) ) { | |
| 351 | - return clone $self->cache[ $group ][ $key ]; | |
| 352 | - } else { | |
| 353 | - return $self->cache[ $group ][ $key ]; | |
| 354 | - } | |
| 355 | - } | |
| 356 | - | |
| 357 | - $found = false; | |
| 358 | - $self->cache_misses += 1; | |
| 359 | - | |
| 360 | - return false; | |
| 361 | - } | |
| 362 | - | |
| 363 | - /** | |
| 364 | - * Increments numeric cache item's value. | |
| 365 | - * | |
| 366 | - * @param int|string $key The cache key to increment | |
| 367 | - * @param int $offset Optional. The amount by which to increment the item's value. Default 1. | |
| 368 | - * @param string $group Optional. The group the key is in. Default 'default'. | |
| 369 | - * | |
| 370 | - * @return false|int False on failure, the item's new value on success. | |
| 371 | - * @since 3.3.0 | |
| 372 | - * | |
| 373 | - */ | |
| 374 | - public static function incr( $key, $offset = 1, $group = 'default' ) { | |
| 375 | - if ( empty( $group ) ) { | |
| 376 | - $group = 'default'; | |
| 377 | - } | |
| 378 | - $self = self::instance(); | |
| 379 | - | |
| 380 | - if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 381 | - $key = $self->blog_prefix . $key; | |
| 382 | - } | |
| 383 | - | |
| 384 | - if ( ! self::_exists( $key, $group ) ) { | |
| 385 | - return false; | |
| 386 | - } | |
| 387 | - | |
| 388 | - if ( ! is_numeric( $self->cache[ $group ][ $key ] ) ) { | |
| 389 | - $self->cache[ $group ][ $key ] = 0; | |
| 390 | - } | |
| 391 | - | |
| 392 | - $offset = (int) $offset; | |
| 393 | - | |
| 394 | - $self->cache[ $group ][ $key ] += $offset; | |
| 395 | - | |
| 396 | - if ( $self->cache[ $group ][ $key ] < 0 ) { | |
| 397 | - $self->cache[ $group ][ $key ] = 0; | |
| 398 | - } | |
| 399 | - | |
| 400 | - return $self->cache[ $group ][ $key ]; | |
| 401 | - } | |
| 402 | - | |
| 403 | - /** | |
| 404 | - * Replaces the contents in the cache, if contents already exist. | |
| 405 | - * | |
| 406 | - * @param int|string $key What to call the contents in the cache. | |
| 407 | - * @param mixed $data The contents to store in the cache. | |
| 408 | - * @param string $group Optional. Where to group the cache contents. Default 'default'. | |
| 409 | - * @param int $expire Optional. When to expire the cache contents. Default 0 (no expiration). | |
| 410 | - * | |
| 411 | - * @return bool False if not exists, true if contents were replaced. | |
| 412 | - * @see WP_Object_Cache::set() | |
| 413 | - * | |
| 414 | - * @since 2.0.0 | |
| 415 | - * | |
| 416 | - */ | |
| 417 | - public static function replace( $key, $data, $group = 'default', $expire = 0 ) { | |
| 418 | - | |
| 419 | - $group = self::get_group( $group ); | |
| 420 | - | |
| 421 | - if ( self::$_use_core ) { | |
| 422 | - return wp_cache_replace( $key, $data, $group, $expire ); | |
| 423 | - } | |
| 424 | - | |
| 425 | - if ( empty( $group ) ) { | |
| 426 | - $group = 'default'; | |
| 427 | - } | |
| 428 | - | |
| 429 | - $self = self::instance(); | |
| 430 | - | |
| 431 | - $id = $key; | |
| 432 | - if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 433 | - $id = $self->blog_prefix . $key; | |
| 434 | - } | |
| 435 | - | |
| 436 | - if ( ! self::_exists( $id, $group ) ) { | |
| 437 | - return false; | |
| 438 | - } | |
| 439 | - | |
| 440 | - return self::set( $key, $data, $group, (int) $expire ); | |
| 441 | - } | |
| 442 | - | |
| 443 | - /** | |
| 444 | - * Resets cache keys. | |
| 445 | - * | |
| 446 | - * @since 3.0.0 | |
| 447 | - * | |
| 448 | - * @deprecated 3.5.0 Use switch_to_blog() | |
| 449 | - * @see switch_to_blog() | |
| 450 | - */ | |
| 451 | - public static function reset() { | |
| 452 | - | |
| 453 | - $self = self::instance(); | |
| 454 | - | |
| 455 | - _deprecated_function( __FUNCTION__, '3.5.0', 'switch_to_blog()' ); | |
| 456 | - | |
| 457 | - // Clear out non-global caches since the blog ID has changed. | |
| 458 | - foreach ( array_keys( $self->cache ) as $group ) { | |
| 459 | - if ( ! isset( $self->global_groups[ $group ] ) ) { | |
| 460 | - unset( $self->cache[ $group ] ); | |
| 461 | - } | |
| 462 | - } | |
| 463 | - } | |
| 464 | - | |
| 465 | - /** | |
| 466 | - * Sets the data contents into the cache. | |
| 467 | - * | |
| 468 | - * The cache contents is grouped by the $group parameter followed by the | |
| 469 | - * $key. This allows for duplicate ids in unique groups. Therefore, naming of | |
| 470 | - * the group should be used with care and should follow normal function | |
| 471 | - * naming guidelines outside of core WordPress usage. | |
| 472 | - * | |
| 473 | - * The $expire parameter is not used, because the cache will automatically | |
| 474 | - * expire for each time a page is accessed and PHP finishes. The method is | |
| 475 | - * more for cache plugins which use files. | |
| 476 | - * | |
| 477 | - * @param int|string $key What to call the contents in the cache. | |
| 478 | - * @param mixed $data The contents to store in the cache. | |
| 479 | - * @param string $group Optional. Where to group the cache contents. Default 'default'. | |
| 480 | - * @param int $expire Not Used. | |
| 481 | - * | |
| 482 | - * @return true Always returns true. | |
| 483 | - * @since 2.0.0 | |
| 484 | - * | |
| 485 | - */ | |
| 486 | - public static function set( $key, $data, $group = 'default', $expire = 0 ) { | |
| 487 | - $group = self::get_group( $group ); | |
| 488 | - | |
| 489 | - if ( self::$_use_core ) { | |
| 490 | - return wp_cache_set( $key, $data, $group, $expire ); | |
| 491 | - } | |
| 492 | - | |
| 493 | - if ( empty( $group ) ) { | |
| 494 | - $group = 'default'; | |
| 495 | - } | |
| 496 | - | |
| 497 | - $self = self::instance(); | |
| 498 | - | |
| 499 | - if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 500 | - $key = $self->blog_prefix . $key; | |
| 501 | - } | |
| 502 | - | |
| 503 | - if ( is_object( $data ) ) { | |
| 504 | - $data = clone $data; | |
| 505 | - } | |
| 506 | - | |
| 507 | - $self->cache[ $group ][ $key ] = $data; | |
| 508 | - | |
| 509 | - return true; | |
| 510 | - } | |
| 511 | - | |
| 512 | - /** | |
| 513 | - * Echoes the stats of the caching. | |
| 514 | - * | |
| 515 | - * Gives the cache hits, and cache misses. Also prints every cached group, | |
| 516 | - * key and the data. | |
| 517 | - * | |
| 518 | - * @since 2.0.0 | |
| 519 | - */ | |
| 520 | - /*public static function stats() { | |
| 521 | - $self = self::instance(); | |
| 522 | - echo '<p>'; | |
| 523 | - echo "<strong>Cache Hits:</strong> {$self->cache_hits}<br />"; | |
| 524 | - echo "<strong>Cache Misses:</strong> {$self->cache_misses}<br />"; | |
| 525 | - echo '</p>'; | |
| 526 | - echo '<ul>'; | |
| 527 | - foreach ( $self->cache as $group => $cache ) { | |
| 528 | - echo "<li><strong>Group:</strong> $group - ( " . number_format( strlen( serialize( $cache ) ) / KB_IN_BYTES, | |
| 529 | - 2 ) . 'k )</li>'; | |
| 530 | - } | |
| 531 | - echo '</ul>'; | |
| 532 | - }*/ | |
| 533 | - | |
| 534 | - /** | |
| 535 | - * Switches the internal blog ID. | |
| 536 | - * | |
| 537 | - * This changes the blog ID used to create keys in blog specific groups. | |
| 538 | - * | |
| 539 | - * @param int $blog_id Blog ID. | |
| 540 | - * | |
| 541 | - * @since 3.5.0 | |
| 542 | - * | |
| 543 | - */ | |
| 544 | - public static function switch_to_blog( $blog_id ) { | |
| 545 | - $self = self::instance(); | |
| 546 | - | |
| 547 | - $blog_id = (int) $blog_id; | |
| 548 | - $self->blog_prefix = $self->multisite ? $blog_id . ':' : ''; | |
| 549 | - } | |
| 550 | - | |
| 551 | - /** | |
| 552 | - * Serves as a utility function to determine whether a key exists in the cache. | |
| 553 | - * | |
| 554 | - * @param int|string $key Cache key to check for existence. | |
| 555 | - * @param string $group Cache group for the key existence check. | |
| 556 | - * | |
| 557 | - * @return bool Whether the key exists in the cache for the given group. | |
| 558 | - * @since 3.4.0 | |
| 559 | - * | |
| 560 | - */ | |
| 561 | - protected static function _exists( $key, $group ) { | |
| 562 | - $self = self::instance(); | |
| 563 | - | |
| 564 | - return isset( $self->cache[ $group ] ) && ( isset( $self->cache[ $group ][ $key ] ) || array_key_exists( | |
| 565 | - $key, | |
| 566 | - $self->cache[ $group ] | |
| 567 | - ) ); | |
| 568 | - } | |
| 569 | - | |
| 570 | - /** | |
| 571 | - * Sets up object properties; PHP 5 style constructor. | |
| 572 | - * | |
| 573 | - * @since 2.0.8 | |
| 574 | - */ | |
| 575 | - public function __construct() { | |
| 576 | - $this->multisite = is_multisite(); | |
| 577 | - $this->blog_prefix = $this->multisite ? get_current_blog_id() . ':' : ''; | |
| 578 | - | |
| 579 | - /** | |
| 580 | - * @todo This should be moved to the PHP4 style constructor, PHP5 | |
| 581 | - * already calls __destruct() | |
| 582 | - */ | |
| 583 | - register_shutdown_function( array( $this, '__destruct' ) ); | |
| 584 | - } | |
| 585 | - | |
| 586 | - /** | |
| 587 | - * Saves the object cache before object is completely destroyed. | |
| 588 | - * | |
| 589 | - * Called upon object destruction, which should be when PHP ends. | |
| 590 | - * | |
| 591 | - * @return true Always returns true. | |
| 592 | - * @since 2.0.8 | |
| 593 | - * | |
| 594 | - */ | |
| 595 | - public function __destruct() { | |
| 596 | - return true; | |
| 597 | - } | |
| 598 | -} | |
| 599 | - | |
| 600 | -LP_Object_Cache::init(); | |
| 1 | +<?php | |
| 2 | +/** | |
| 3 | + * Class LP_Object_Cache | |
| 4 | + */ | |
| 5 | + | |
| 6 | +class LP_Object_Cache { | |
| 7 | + | |
| 8 | + /** | |
| 9 | + * Holds the cached objects. | |
| 10 | + * | |
| 11 | + * @since 2.0.0 | |
| 12 | + * @var array | |
| 13 | + */ | |
| 14 | + private $cache = array(); | |
| 15 | + | |
| 16 | + /** | |
| 17 | + * The amount of times the cache data was already stored in the cache. | |
| 18 | + * | |
| 19 | + * @since 2.5.0 | |
| 20 | + * @var int | |
| 21 | + */ | |
| 22 | + public $cache_hits = 0; | |
| 23 | + | |
| 24 | + /** | |
| 25 | + * Amount of times the cache did not have the request in cache. | |
| 26 | + * | |
| 27 | + * @since 2.0.0 | |
| 28 | + * @var int | |
| 29 | + */ | |
| 30 | + public $cache_misses = 0; | |
| 31 | + | |
| 32 | + /** | |
| 33 | + * List of global cache groups. | |
| 34 | + * | |
| 35 | + * @since 3.0.0 | |
| 36 | + * @var array | |
| 37 | + */ | |
| 38 | + protected $global_groups = array(); | |
| 39 | + | |
| 40 | + /** | |
| 41 | + * The blog prefix to prepend to keys in non-global groups. | |
| 42 | + * | |
| 43 | + * @since 3.5.0 | |
| 44 | + * @var int | |
| 45 | + */ | |
| 46 | + private $blog_prefix; | |
| 47 | + | |
| 48 | + /** | |
| 49 | + * Holds the value of is_multisite(). | |
| 50 | + * | |
| 51 | + * @since 3.5.0 | |
| 52 | + * @var bool | |
| 53 | + */ | |
| 54 | + private $multisite; | |
| 55 | + | |
| 56 | + /** | |
| 57 | + * @var bool | |
| 58 | + */ | |
| 59 | + protected static $_use_core = false; | |
| 60 | + | |
| 61 | + /** | |
| 62 | + * @var LP_Object_Cache | |
| 63 | + */ | |
| 64 | + protected static $instance = null; | |
| 65 | + | |
| 66 | + /** | |
| 67 | + * @return LP_Object_Cache | |
| 68 | + */ | |
| 69 | + public static function instance() { | |
| 70 | + if ( ! self::$instance ) { | |
| 71 | + self::$instance = new self(); | |
| 72 | + } | |
| 73 | + | |
| 74 | + return self::$instance; | |
| 75 | + } | |
| 76 | + | |
| 77 | + public static function init() { | |
| 78 | + // add_action( 'shutdown', array( __CLASS__, 'wp_cache_flush' ), 9999 ); | |
| 79 | + } | |
| 80 | + | |
| 81 | + public static function wp_cache_flush() { | |
| 82 | + | |
| 83 | + } | |
| 84 | + | |
| 85 | + public static function get_group( $group ) { | |
| 86 | + if ( self::$_use_core ) { | |
| 87 | + if ( false === strpos( $group, 'learn-press/' ) ) { | |
| 88 | + return "learn-press/{$group}"; | |
| 89 | + } | |
| 90 | + } | |
| 91 | + | |
| 92 | + return $group; | |
| 93 | + } | |
| 94 | + | |
| 95 | + /** | |
| 96 | + * Makes private properties readable for backward compatibility. | |
| 97 | + * | |
| 98 | + * @param string $name Property to get. | |
| 99 | + * | |
| 100 | + * @return mixed Property. | |
| 101 | + * @since 4.0.0 | |
| 102 | + * | |
| 103 | + */ | |
| 104 | + public function __get( $name ) { | |
| 105 | + return $this->$name; | |
| 106 | + } | |
| 107 | + | |
| 108 | + /** | |
| 109 | + * Makes private properties settable for backward compatibility. | |
| 110 | + * | |
| 111 | + * @param string $name Property to set. | |
| 112 | + * @param mixed $value Property value. | |
| 113 | + * | |
| 114 | + * @return mixed Newly-set property. | |
| 115 | + * @since 4.0.0 | |
| 116 | + * | |
| 117 | + */ | |
| 118 | + public function __set( $name, $value ) { | |
| 119 | + return $this->$name = $value; | |
| 120 | + } | |
| 121 | + | |
| 122 | + /** | |
| 123 | + * Makes private properties checkable for backward compatibility. | |
| 124 | + * | |
| 125 | + * @param string $name Property to check if set. | |
| 126 | + * | |
| 127 | + * @return bool Whether the property is set. | |
| 128 | + * @since 4.0.0 | |
| 129 | + * | |
| 130 | + */ | |
| 131 | + public function __isset( $name ) { | |
| 132 | + return isset( $this->$name ); | |
| 133 | + } | |
| 134 | + | |
| 135 | + /** | |
| 136 | + * Makes private properties un-settable for backward compatibility. | |
| 137 | + * | |
| 138 | + * @param string $name Property to unset. | |
| 139 | + * | |
| 140 | + * @since 4.0.0 | |
| 141 | + * | |
| 142 | + */ | |
| 143 | + public function __unset( $name ) { | |
| 144 | + unset( $this->$name ); | |
| 145 | + } | |
| 146 | + | |
| 147 | + /** | |
| 148 | + * Adds data to the cache if it doesn't already exist. | |
| 149 | + * | |
| 150 | + * @param int|string $key What to call the contents in the cache. | |
| 151 | + * @param mixed $data The contents to store in the cache. | |
| 152 | + * @param string $group Optional. Where to group the cache contents. Default 'default'. | |
| 153 | + * @param int $expire Optional. When to expire the cache contents. Default 0 (no expiration). | |
| 154 | + * | |
| 155 | + * @return bool False if cache key and group already exist, true on success | |
| 156 | + * @uses WP_Object_Cache::set() Sets the data after the checking the cache | |
| 157 | + * contents existence. | |
| 158 | + * | |
| 159 | + * @since 2.0.0 | |
| 160 | + * | |
| 161 | + * @uses WP_Object_Cache::_exists() Checks to see if the cache already has data. | |
| 162 | + */ | |
| 163 | + public static function add( $key, $data, $group = 'default', $expire = 0 ) { | |
| 164 | + | |
| 165 | + $group = self::get_group( $group ); | |
| 166 | + | |
| 167 | + if ( self::$_use_core ) { | |
| 168 | + return wp_cache_add( $key, $data, $group, $expire ); | |
| 169 | + } | |
| 170 | + | |
| 171 | + if ( wp_suspend_cache_addition() ) { | |
| 172 | + return false; | |
| 173 | + } | |
| 174 | + | |
| 175 | + if ( empty( $group ) ) { | |
| 176 | + $group = 'default'; | |
| 177 | + } | |
| 178 | + | |
| 179 | + $self = self::instance(); | |
| 180 | + | |
| 181 | + $id = $key; | |
| 182 | + if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 183 | + $id = $self->blog_prefix . $key; | |
| 184 | + } | |
| 185 | + | |
| 186 | + if ( self::_exists( $id, $group ) ) { | |
| 187 | + return false; | |
| 188 | + } | |
| 189 | + | |
| 190 | + return self::set( $key, $data, $group, (int) $expire ); | |
| 191 | + } | |
| 192 | + | |
| 193 | + /** | |
| 194 | + * Sets the list of global cache groups. | |
| 195 | + * | |
| 196 | + * @param array $groups List of groups that are global. | |
| 197 | + * | |
| 198 | + * @since 3.0.0 | |
| 199 | + * | |
| 200 | + */ | |
| 201 | + public static function add_global_groups( $groups ) { | |
| 202 | + $groups = (array) $groups; | |
| 203 | + $self = self::instance(); | |
| 204 | + | |
| 205 | + $groups = array_fill_keys( $groups, true ); | |
| 206 | + $self->global_groups = array_merge( $self->global_groups, $groups ); | |
| 207 | + } | |
| 208 | + | |
| 209 | + /** | |
| 210 | + * Decrements numeric cache item's value. | |
| 211 | + * | |
| 212 | + * @param int|string $key The cache key to decrement. | |
| 213 | + * @param int $offset Optional. The amount by which to decrement the item's value. Default 1. | |
| 214 | + * @param string $group Optional. The group the key is in. Default 'default'. | |
| 215 | + * | |
| 216 | + * @return false|int False on failure, the item's new value on success. | |
| 217 | + * @since 3.3.0 | |
| 218 | + * | |
| 219 | + */ | |
| 220 | + public static function decr( $key, $offset = 1, $group = 'default' ) { | |
| 221 | + if ( empty( $group ) ) { | |
| 222 | + $group = 'default'; | |
| 223 | + } | |
| 224 | + | |
| 225 | + $self = self::instance(); | |
| 226 | + | |
| 227 | + if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 228 | + $key = $self->blog_prefix . $key; | |
| 229 | + } | |
| 230 | + | |
| 231 | + if ( ! self::_exists( $key, $group ) ) { | |
| 232 | + return false; | |
| 233 | + } | |
| 234 | + | |
| 235 | + if ( ! is_numeric( $self->cache[ $group ][ $key ] ) ) { | |
| 236 | + $self->cache[ $group ][ $key ] = 0; | |
| 237 | + } | |
| 238 | + | |
| 239 | + $offset = (int) $offset; | |
| 240 | + | |
| 241 | + $self->cache[ $group ][ $key ] -= $offset; | |
| 242 | + | |
| 243 | + if ( $self->cache[ $group ][ $key ] < 0 ) { | |
| 244 | + $self->cache[ $group ][ $key ] = 0; | |
| 245 | + } | |
| 246 | + | |
| 247 | + return $self->cache[ $group ][ $key ]; | |
| 248 | + } | |
| 249 | + | |
| 250 | + /** | |
| 251 | + * Removes the contents of the cache key in the group. | |
| 252 | + * | |
| 253 | + * If the cache key does not exist in the group, then nothing will happen. | |
| 254 | + * | |
| 255 | + * @param int|string $key What the contents in the cache are called. | |
| 256 | + * @param string $group Optional. Where the cache contents are grouped. Default 'default'. | |
| 257 | + * @param bool $deprecated Optional. Unused. Default false. | |
| 258 | + * | |
| 259 | + * @return bool False if the contents weren't deleted and true on success. | |
| 260 | + * @since 2.0.0 | |
| 261 | + * | |
| 262 | + */ | |
| 263 | + public static function delete( $key, $group = 'default', $deprecated = false ) { | |
| 264 | + | |
| 265 | + $group = self::get_group( $group ); | |
| 266 | + | |
| 267 | + if ( self::$_use_core ) { | |
| 268 | + return wp_cache_delete( $key, $group ); | |
| 269 | + } | |
| 270 | + | |
| 271 | + if ( empty( $group ) ) { | |
| 272 | + $group = 'default'; | |
| 273 | + } | |
| 274 | + | |
| 275 | + $self = self::instance(); | |
| 276 | + | |
| 277 | + if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 278 | + $key = $self->blog_prefix . $key; | |
| 279 | + } | |
| 280 | + | |
| 281 | + if ( ! self::_exists( $key, $group ) ) { | |
| 282 | + return false; | |
| 283 | + } | |
| 284 | + | |
| 285 | + unset( $self->cache[ $group ][ $key ] ); | |
| 286 | + | |
| 287 | + return true; | |
| 288 | + } | |
| 289 | + | |
| 290 | + /** | |
| 291 | + * Clears the object cache of all data. | |
| 292 | + * | |
| 293 | + * @return true Always returns true. | |
| 294 | + * @since 2.0.0 | |
| 295 | + * | |
| 296 | + */ | |
| 297 | + public static function flush() { | |
| 298 | + | |
| 299 | + if ( self::$_use_core ) { | |
| 300 | + // return wp_cache_flush(); | |
| 301 | + } | |
| 302 | + | |
| 303 | + $self = self::instance(); | |
| 304 | + | |
| 305 | + $self->cache = array(); | |
| 306 | + | |
| 307 | + return true; | |
| 308 | + } | |
| 309 | + | |
| 310 | + /** | |
| 311 | + * Retrieves the cache contents, if it exists. | |
| 312 | + * | |
| 313 | + * The contents will be first attempted to be retrieved by searching by the | |
| 314 | + * key in the cache group. If the cache is hit (success) then the contents | |
| 315 | + * are returned. | |
| 316 | + * | |
| 317 | + * On failure, the number of cache misses will be incremented. | |
| 318 | + * | |
| 319 | + * @param int|string $key What the contents in the cache are called. | |
| 320 | + * @param string $group Optional. Where the cache contents are grouped. Default 'default'. | |
| 321 | + * @param string $force Optional. Unused. Whether to force a refetch rather than relying on the local | |
| 322 | + * cache. Default false. | |
| 323 | + * @param bool $found Optional. Whether the key was found in the cache (passed by reference). | |
| 324 | + * Disambiguates a return of false, a storable value. Default null. | |
| 325 | + * | |
| 326 | + * @return false|mixed False on failure to retrieve contents or the cache contents on success. | |
| 327 | + * @since 2.0.0 | |
| 328 | + * | |
| 329 | + */ | |
| 330 | + public static function get( $key, $group = 'default', $force = false, &$found = null ) { | |
| 331 | + $group = self::get_group( $group ); | |
| 332 | + | |
| 333 | + if ( self::$_use_core ) { | |
| 334 | + return wp_cache_get( $key, $group, $force, $found ); | |
| 335 | + } | |
| 336 | + | |
| 337 | + if ( empty( $group ) ) { | |
| 338 | + $group = 'default'; | |
| 339 | + } | |
| 340 | + | |
| 341 | + $self = self::instance(); | |
| 342 | + | |
| 343 | + if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 344 | + $key = $self->blog_prefix . $key; | |
| 345 | + } | |
| 346 | + | |
| 347 | + if ( self::_exists( $key, $group ) ) { | |
| 348 | + $found = true; | |
| 349 | + $self->cache_hits += 1; | |
| 350 | + if ( is_object( $self->cache[ $group ][ $key ] ) ) { | |
| 351 | + return clone $self->cache[ $group ][ $key ]; | |
| 352 | + } else { | |
| 353 | + return $self->cache[ $group ][ $key ]; | |
| 354 | + } | |
| 355 | + } | |
| 356 | + | |
| 357 | + $found = false; | |
| 358 | + $self->cache_misses += 1; | |
| 359 | + | |
| 360 | + return false; | |
| 361 | + } | |
| 362 | + | |
| 363 | + /** | |
| 364 | + * Increments numeric cache item's value. | |
| 365 | + * | |
| 366 | + * @param int|string $key The cache key to increment | |
| 367 | + * @param int $offset Optional. The amount by which to increment the item's value. Default 1. | |
| 368 | + * @param string $group Optional. The group the key is in. Default 'default'. | |
| 369 | + * | |
| 370 | + * @return false|int False on failure, the item's new value on success. | |
| 371 | + * @since 3.3.0 | |
| 372 | + * | |
| 373 | + */ | |
| 374 | + public static function incr( $key, $offset = 1, $group = 'default' ) { | |
| 375 | + if ( empty( $group ) ) { | |
| 376 | + $group = 'default'; | |
| 377 | + } | |
| 378 | + $self = self::instance(); | |
| 379 | + | |
| 380 | + if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 381 | + $key = $self->blog_prefix . $key; | |
| 382 | + } | |
| 383 | + | |
| 384 | + if ( ! self::_exists( $key, $group ) ) { | |
| 385 | + return false; | |
| 386 | + } | |
| 387 | + | |
| 388 | + if ( ! is_numeric( $self->cache[ $group ][ $key ] ) ) { | |
| 389 | + $self->cache[ $group ][ $key ] = 0; | |
| 390 | + } | |
| 391 | + | |
| 392 | + $offset = (int) $offset; | |
| 393 | + | |
| 394 | + $self->cache[ $group ][ $key ] += $offset; | |
| 395 | + | |
| 396 | + if ( $self->cache[ $group ][ $key ] < 0 ) { | |
| 397 | + $self->cache[ $group ][ $key ] = 0; | |
| 398 | + } | |
| 399 | + | |
| 400 | + return $self->cache[ $group ][ $key ]; | |
| 401 | + } | |
| 402 | + | |
| 403 | + /** | |
| 404 | + * Replaces the contents in the cache, if contents already exist. | |
| 405 | + * | |
| 406 | + * @param int|string $key What to call the contents in the cache. | |
| 407 | + * @param mixed $data The contents to store in the cache. | |
| 408 | + * @param string $group Optional. Where to group the cache contents. Default 'default'. | |
| 409 | + * @param int $expire Optional. When to expire the cache contents. Default 0 (no expiration). | |
| 410 | + * | |
| 411 | + * @return bool False if not exists, true if contents were replaced. | |
| 412 | + * @see WP_Object_Cache::set() | |
| 413 | + * | |
| 414 | + * @since 2.0.0 | |
| 415 | + * | |
| 416 | + */ | |
| 417 | + public static function replace( $key, $data, $group = 'default', $expire = 0 ) { | |
| 418 | + | |
| 419 | + $group = self::get_group( $group ); | |
| 420 | + | |
| 421 | + if ( self::$_use_core ) { | |
| 422 | + return wp_cache_replace( $key, $data, $group, $expire ); | |
| 423 | + } | |
| 424 | + | |
| 425 | + if ( empty( $group ) ) { | |
| 426 | + $group = 'default'; | |
| 427 | + } | |
| 428 | + | |
| 429 | + $self = self::instance(); | |
| 430 | + | |
| 431 | + $id = $key; | |
| 432 | + if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 433 | + $id = $self->blog_prefix . $key; | |
| 434 | + } | |
| 435 | + | |
| 436 | + if ( ! self::_exists( $id, $group ) ) { | |
| 437 | + return false; | |
| 438 | + } | |
| 439 | + | |
| 440 | + return self::set( $key, $data, $group, (int) $expire ); | |
| 441 | + } | |
| 442 | + | |
| 443 | + /** | |
| 444 | + * Resets cache keys. | |
| 445 | + * | |
| 446 | + * @since 3.0.0 | |
| 447 | + * | |
| 448 | + * @deprecated 3.5.0 Use switch_to_blog() | |
| 449 | + * @see switch_to_blog() | |
| 450 | + */ | |
| 451 | + public static function reset() { | |
| 452 | + | |
| 453 | + $self = self::instance(); | |
| 454 | + | |
| 455 | + _deprecated_function( __FUNCTION__, '3.5.0', 'switch_to_blog()' ); | |
| 456 | + | |
| 457 | + // Clear out non-global caches since the blog ID has changed. | |
| 458 | + foreach ( array_keys( $self->cache ) as $group ) { | |
| 459 | + if ( ! isset( $self->global_groups[ $group ] ) ) { | |
| 460 | + unset( $self->cache[ $group ] ); | |
| 461 | + } | |
| 462 | + } | |
| 463 | + } | |
| 464 | + | |
| 465 | + /** | |
| 466 | + * Sets the data contents into the cache. | |
| 467 | + * | |
| 468 | + * The cache contents is grouped by the $group parameter followed by the | |
| 469 | + * $key. This allows for duplicate ids in unique groups. Therefore, naming of | |
| 470 | + * the group should be used with care and should follow normal function | |
| 471 | + * naming guidelines outside of core WordPress usage. | |
| 472 | + * | |
| 473 | + * The $expire parameter is not used, because the cache will automatically | |
| 474 | + * expire for each time a page is accessed and PHP finishes. The method is | |
| 475 | + * more for cache plugins which use files. | |
| 476 | + * | |
| 477 | + * @param int|string $key What to call the contents in the cache. | |
| 478 | + * @param mixed $data The contents to store in the cache. | |
| 479 | + * @param string $group Optional. Where to group the cache contents. Default 'default'. | |
| 480 | + * @param int $expire Not Used. | |
| 481 | + * | |
| 482 | + * @return true Always returns true. | |
| 483 | + * @since 2.0.0 | |
| 484 | + * | |
| 485 | + */ | |
| 486 | + public static function set( $key, $data, $group = 'default', $expire = 0 ) { | |
| 487 | + $group = self::get_group( $group ); | |
| 488 | + | |
| 489 | + if ( self::$_use_core ) { | |
| 490 | + return wp_cache_set( $key, $data, $group, $expire ); | |
| 491 | + } | |
| 492 | + | |
| 493 | + if ( empty( $group ) ) { | |
| 494 | + $group = 'default'; | |
| 495 | + } | |
| 496 | + | |
| 497 | + $self = self::instance(); | |
| 498 | + | |
| 499 | + if ( $self->multisite && ! isset( $self->global_groups[ $group ] ) ) { | |
| 500 | + $key = $self->blog_prefix . $key; | |
| 501 | + } | |
| 502 | + | |
| 503 | + if ( is_object( $data ) ) { | |
| 504 | + $data = clone $data; | |
| 505 | + } | |
| 506 | + | |
| 507 | + $self->cache[ $group ][ $key ] = $data; | |
| 508 | + | |
| 509 | + return true; | |
| 510 | + } | |
| 511 | + | |
| 512 | + /** | |
| 513 | + * Echoes the stats of the caching. | |
| 514 | + * | |
| 515 | + * Gives the cache hits, and cache misses. Also prints every cached group, | |
| 516 | + * key and the data. | |
| 517 | + * | |
| 518 | + * @since 2.0.0 | |
| 519 | + */ | |
| 520 | + /*public static function stats() { | |
| 521 | + $self = self::instance(); | |
| 522 | + echo '<p>'; | |
| 523 | + echo "<strong>Cache Hits:</strong> {$self->cache_hits}<br />"; | |
| 524 | + echo "<strong>Cache Misses:</strong> {$self->cache_misses}<br />"; | |
| 525 | + echo '</p>'; | |
| 526 | + echo '<ul>'; | |
| 527 | + foreach ( $self->cache as $group => $cache ) { | |
| 528 | + echo "<li><strong>Group:</strong> $group - ( " . number_format( strlen( serialize( $cache ) ) / KB_IN_BYTES, | |
| 529 | + 2 ) . 'k )</li>'; | |
| 530 | + } | |
| 531 | + echo '</ul>'; | |
| 532 | + }*/ | |
| 533 | + | |
| 534 | + /** | |
| 535 | + * Switches the internal blog ID. | |
| 536 | + * | |
| 537 | + * This changes the blog ID used to create keys in blog specific groups. | |
| 538 | + * | |
| 539 | + * @param int $blog_id Blog ID. | |
| 540 | + * | |
| 541 | + * @since 3.5.0 | |
| 542 | + * | |
| 543 | + */ | |
| 544 | + public static function switch_to_blog( $blog_id ) { | |
| 545 | + $self = self::instance(); | |
| 546 | + | |
| 547 | + $blog_id = (int) $blog_id; | |
| 548 | + $self->blog_prefix = $self->multisite ? $blog_id . ':' : ''; | |
| 549 | + } | |
| 550 | + | |
| 551 | + /** | |
| 552 | + * Serves as a utility function to determine whether a key exists in the cache. | |
| 553 | + * | |
| 554 | + * @param int|string $key Cache key to check for existence. | |
| 555 | + * @param string $group Cache group for the key existence check. | |
| 556 | + * | |
| 557 | + * @return bool Whether the key exists in the cache for the given group. | |
| 558 | + * @since 3.4.0 | |
| 559 | + * | |
| 560 | + */ | |
| 561 | + protected static function _exists( $key, $group ) { | |
| 562 | + $self = self::instance(); | |
| 563 | + | |
| 564 | + return isset( $self->cache[ $group ] ) && ( isset( $self->cache[ $group ][ $key ] ) || array_key_exists( | |
| 565 | + $key, | |
| 566 | + $self->cache[ $group ] | |
| 567 | + ) ); | |
| 568 | + } | |
| 569 | + | |
| 570 | + /** | |
| 571 | + * Sets up object properties; PHP 5 style constructor. | |
| 572 | + * | |
| 573 | + * @since 2.0.8 | |
| 574 | + */ | |
| 575 | + public function __construct() { | |
| 576 | + $this->multisite = is_multisite(); | |
| 577 | + $this->blog_prefix = $this->multisite ? get_current_blog_id() . ':' : ''; | |
| 578 | + | |
| 579 | + /** | |
| 580 | + * @todo This should be moved to the PHP4 style constructor, PHP5 | |
| 581 | + * already calls __destruct() | |
| 582 | + */ | |
| 583 | + register_shutdown_function( array( $this, '__destruct' ) ); | |
| 584 | + } | |
| 585 | + | |
| 586 | + /** | |
| 587 | + * Saves the object cache before object is completely destroyed. | |
| 588 | + * | |
| 589 | + * Called upon object destruction, which should be when PHP ends. | |
| 590 | + * | |
| 591 | + * @return true Always returns true. | |
| 592 | + * @since 2.0.8 | |
| 593 | + * | |
| 594 | + */ | |
| 595 | + public function __destruct() { | |
| 596 | + return true; | |
| 597 | + } | |
| 598 | +} | |
| 599 | + | |
| 600 | +LP_Object_Cache::init(); | |
