| 1 |
<?php |
| 2 |
namespace Upress\EzCache; |
| 3 |
|
| 4 |
use MatthiasMullie\Minify\CSS; |
| 5 |
use MatthiasMullie\Minify\JS; |
| 6 |
use RecursiveDirectoryIterator; |
| 7 |
use RecursiveIteratorIterator; |
| 8 |
use RegexIterator; |
| 9 |
use UnexpectedValueException; |
| 10 |
use Upress\EzCache\BackgroundProcesses\ConvertWebpProcess; |
| 11 |
use Upress\EzCache\FileOptimizer\CssMinifier; |
| 12 |
use Upress\EzCache\FileOptimizer\CssCombiner; |
| 13 |
use Upress\EzCache\FileOptimizer\JsMinifier; |
| 14 |
use Upress\EzCache\FileOptimizer\JsCombiner; |
| 15 |
use Upress\EzCache\FileOptimizer\WebpConverter; |
| 16 |
use Upress\EzCache\ThirdParty\Minify_HTML; |
| 17 |
|
| 18 |
class Cache { |
| 19 |
protected static $instance; |
| 20 |
protected $settings; |
| 21 |
protected $cache_start_time; |
| 22 |
protected $webp_processor; |
| 23 |
protected $root_cache_dir = WP_CONTENT_DIR . '/cache/ezcache/'; |
| 24 |
|
| 25 |
|
| 26 |
public static function instance() { |
| 27 |
if ( ! self::$instance ) { |
| 28 |
self::$instance = new self(); |
| 29 |
} |
| 30 |
|
| 31 |
return self::$instance; |
| 32 |
} |
| 33 |
|
| 34 |
private function __construct() { |
| 35 |
$this->settings = Settings::get_settings(); |
| 36 |
$this->webp_processor = new ConvertWebpProcess(); |
| 37 |
$this->cache_start_time = microtime( true ); |
| 38 |
} |
| 39 |
|
| 40 |
/** |
| 41 |
* @return string |
| 42 |
*/ |
| 43 |
public function get_default_cache_path() { |
| 44 |
$hostname = preg_replace( '/:.*$/', '', $this->get_http_host() ); |
| 45 |
return $this->root_cache_dir . $hostname . '/'; |
| 46 |
} |
| 47 |
|
| 48 |
/** |
| 49 |
* Get the HTTP host |
| 50 |
* |
| 51 |
* @return string |
| 52 |
*/ |
| 53 |
public function get_http_host() { |
| 54 |
if ( ! empty( $_SERVER['HTTP_HOST'] ) ) { |
| 55 |
$host = function_exists( 'mb_strtolower' ) ? mb_strtolower( $_SERVER['HTTP_HOST'] ) : strtolower( $_SERVER['HTTP_HOST'] ); |
| 56 |
|
| 57 |
return htmlentities( $host ); |
| 58 |
} elseif ( function_exists( 'get_option' ) ) { |
| 59 |
return (string) parse_url( get_option( 'home' ), PHP_URL_HOST ); |
| 60 |
} |
| 61 |
|
| 62 |
return ''; |
| 63 |
} |
| 64 |
|
| 65 |
/** |
| 66 |
* Get the logged in cookie value |
| 67 |
* @return string |
| 68 |
*/ |
| 69 |
public function get_cookies_values() { |
| 70 |
static $string = ''; |
| 71 |
|
| 72 |
if ( $string != '' ) { |
| 73 |
return $string; |
| 74 |
} |
| 75 |
|
| 76 |
if ( defined( 'COOKIEHASH' ) ) { |
| 77 |
$cookiehash = preg_quote( constant( 'COOKIEHASH' ) ); |
| 78 |
} else { |
| 79 |
$cookiehash = ''; |
| 80 |
} |
| 81 |
|
| 82 |
$regex = "/^wp-postpass_{$cookiehash}|^comment_author_{$cookiehash}"; |
| 83 |
if ( defined( 'LOGGED_IN_COOKIE' ) ) { |
| 84 |
$regex .= "|^" . preg_quote( constant( 'LOGGED_IN_COOKIE' ) ); |
| 85 |
} else { |
| 86 |
$regex .= "|^wordpress_logged_in_{$cookiehash}"; |
| 87 |
} |
| 88 |
$regex .= "/"; |
| 89 |
while ( $key = key( $_COOKIE ) ) { |
| 90 |
if ( preg_match( $regex, $key ) ) { |
| 91 |
$string .= $_COOKIE[ $key ] . ","; |
| 92 |
} |
| 93 |
next( $_COOKIE ); |
| 94 |
} |
| 95 |
reset( $_COOKIE ); |
| 96 |
|
| 97 |
if ( $string != '' ) { |
| 98 |
$string = md5( $string ); |
| 99 |
} |
| 100 |
|
| 101 |
return $string; |
| 102 |
} |
| 103 |
|
| 104 |
/** |
| 105 |
* Check if the request supports gzip compression |
| 106 |
* |
| 107 |
* @return bool |
| 108 |
*/ |
| 109 |
public function gzip_accepted() { |
| 110 |
return isset( $_SERVER['HTTP_ACCEPT_ENCODING'] ) && false !== strpos( $_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip' ); |
| 111 |
} |
| 112 |
|
| 113 |
/** |
| 114 |
* Check if the request supports webp images |
| 115 |
* |
| 116 |
* @return bool |
| 117 |
*/ |
| 118 |
public function webp_accepted() { |
| 119 |
return isset( $_SERVER['HTTP_ACCEPT'] ) && false !== strpos( $_SERVER['HTTP_ACCEPT'], 'image/webp' ); |
| 120 |
} |
| 121 |
|
| 122 |
/** |
| 123 |
* Check if the request comes from the backend |
| 124 |
* |
| 125 |
* @return bool |
| 126 |
*/ |
| 127 |
public function is_backend() { |
| 128 |
if ( is_admin() ) { |
| 129 |
return true; |
| 130 |
} |
| 131 |
|
| 132 |
$script = isset( $_SERVER['PHP_SELF'] ) ? basename( $_SERVER['PHP_SELF'] ) : ''; |
| 133 |
if ( $script !== 'index.php' ) { |
| 134 |
if ( in_array( $script, array( 'wp-login.php', 'xmlrpc.php', 'wp-cron.php' ) ) ) { |
| 135 |
return true; |
| 136 |
} elseif ( defined( 'DOING_CRON' ) && DOING_CRON ) { |
| 137 |
return true; |
| 138 |
} elseif ( PHP_SAPI == 'cli' || ( defined( 'WP_CLI' ) && WP_CLI ) ) { |
| 139 |
return true; |
| 140 |
} |
| 141 |
} |
| 142 |
|
| 143 |
return false; |
| 144 |
} |
| 145 |
|
| 146 |
/** |
| 147 |
* Should we serve the cached file |
| 148 |
* |
| 149 |
* @return bool |
| 150 |
*/ |
| 151 |
public function should_serve_cached_data() { |
| 152 |
$settings = $this->settings; |
| 153 |
|
| 154 |
if ( $settings->no_cache_known_users && $this->get_cookies_values() ) { |
| 155 |
return false; |
| 156 |
} |
| 157 |
|
| 158 |
if ( ( isset( $_SERVER['REQUEST_METHOD'] ) && in_array( $_SERVER['REQUEST_METHOD'], [ |
| 159 |
'POST', |
| 160 |
'PUT', |
| 161 |
'PATCH', |
| 162 |
'DELETE' |
| 163 |
] ) ) || isset( $_GET['customize_changeset_uuid'] ) || isset( $_POST['wp_customize'] ) ) { |
| 164 |
return false; |
| 165 |
} |
| 166 |
|
| 167 |
if ( $this->is_backend() ) { |
| 168 |
return false; |
| 169 |
} |
| 170 |
|
| 171 |
// Don't cache with variables but the cache is enabled if the visitor comes from an RSS feed, a Facebook action or Google Adsense tracking |
| 172 |
if ( $settings->no_cache_query_params && ! empty( $_GET ) |
| 173 |
&& ! isset( $_GET['utm_source'], $_GET['utm_medium'], $_GET['utm_campaign'] ) |
| 174 |
&& ! isset( $_GET['utm_expid'] ) |
| 175 |
&& ! isset( $_GET['fb_action_ids'], $_GET['fb_action_types'], $_GET['fb_source'] ) |
| 176 |
&& ! isset( $_GET['gclid'] ) |
| 177 |
&& ! isset( $_GET['permalink_name'] ) |
| 178 |
&& ! isset( $_GET['lp-variation-id'] ) |
| 179 |
&& ! isset( $_GET['lang'] ) |
| 180 |
&& ! isset( $_GET['s'] ) |
| 181 |
&& ! isset( $_GET['age-verified'] ) |
| 182 |
&& ! isset( $_GET['ao_noptimize'] ) |
| 183 |
&& ! isset( $_GET['usqp'] ) |
| 184 |
) { |
| 185 |
return false; |
| 186 |
} |
| 187 |
|
| 188 |
if ( defined( 'DOING_CRON' ) && DOING_CRON ) { |
| 189 |
return false; |
| 190 |
} |
| 191 |
|
| 192 |
return true; |
| 193 |
} |
| 194 |
|
| 195 |
/** |
| 196 |
* Should we save the cache files. |
| 197 |
* Most of the checks here have to be run after the page was rendered as they require WordPress. |
| 198 |
* |
| 199 |
* @return bool |
| 200 |
*/ |
| 201 |
public function should_save_cache() { |
| 202 |
if ( ! $this->should_serve_cached_data() ) { |
| 203 |
return false; |
| 204 |
} |
| 205 |
|
| 206 |
$settings = $this->settings; |
| 207 |
|
| 208 |
if ( ( defined( 'DOING_CRON' ) && DOING_CRON ) ) { |
| 209 |
return false; |
| 210 |
} |
| 211 |
if ( ( defined( 'REST_REQUEST' ) && REST_REQUEST ) ) { |
| 212 |
return false; |
| 213 |
} |
| 214 |
if ( ( defined( 'JSON_REQUEST' ) && JSON_REQUEST ) ) { |
| 215 |
return false; |
| 216 |
} |
| 217 |
if ( ( defined( 'WC_API_REQUEST' ) && WC_API_REQUEST ) ) { |
| 218 |
return false; |
| 219 |
} |
| 220 |
|
| 221 |
// check if we have any errors or otherwise settings preventing caching |
| 222 |
$error = error_get_last(); |
| 223 |
if ( null !== $error && ( $error['type'] & ( E_ERROR | E_CORE_ERROR | E_PARSE | E_COMPILE_ERROR | E_USER_ERROR ) ) ) { |
| 224 |
return false; |
| 225 |
} |
| 226 |
|
| 227 |
if ( function_exists( 'http_response_code' ) && http_response_code() > 300 ) { |
| 228 |
return false; |
| 229 |
} |
| 230 |
|
| 231 |
if ( is_404() ) { |
| 232 |
return false; |
| 233 |
} |
| 234 |
|
| 235 |
if ( $settings->bypass_cache->single && is_single() ) { |
| 236 |
return false; |
| 237 |
} |
| 238 |
if ( $settings->bypass_cache->pages && is_page() ) { |
| 239 |
return false; |
| 240 |
} |
| 241 |
if ( $settings->bypass_cache->frontpage && is_front_page() ) { |
| 242 |
return false; |
| 243 |
} |
| 244 |
if ( $settings->bypass_cache->home && is_home() ) { |
| 245 |
return false; |
| 246 |
} |
| 247 |
if ( $settings->bypass_cache->archives && is_archive() ) { |
| 248 |
return false; |
| 249 |
} |
| 250 |
if ( $settings->bypass_cache->tag && is_tag() ) { |
| 251 |
return false; |
| 252 |
} |
| 253 |
if ( $settings->bypass_cache->category && is_category() ) { |
| 254 |
return false; |
| 255 |
} |
| 256 |
if ( $settings->bypass_cache->feed && is_feed() ) { |
| 257 |
return false; |
| 258 |
} |
| 259 |
if ( $settings->bypass_cache->search && is_search() ) { |
| 260 |
return false; |
| 261 |
} |
| 262 |
if ( $settings->bypass_cache->author && is_author() ) { |
| 263 |
return false; |
| 264 |
} |
| 265 |
|
| 266 |
if ( is_robots() || get_query_var( 'sitemap' ) || get_query_var( 'xsl' ) || get_query_var( 'xml_sitemap' ) ) { |
| 267 |
return false; |
| 268 |
} |
| 269 |
|
| 270 |
if ( isset( $_GET['preview'] ) || isset( $_POST['wp_customize'] ) ) { |
| 271 |
return false; |
| 272 |
} |
| 273 |
|
| 274 |
if ( get_post_meta( get_the_ID(), '_ezcache_do_not_cache_post', true ) ) { |
| 275 |
return false; |
| 276 |
} |
| 277 |
|
| 278 |
// check useragent |
| 279 |
$rejected_useragents = preg_split( "/\\r\\n|\\r|\\n/u", trim( $settings->rejected_user_agent ), -1, PREG_SPLIT_NO_EMPTY ); |
| 280 |
$rejected_useragents = array_filter( $rejected_useragents ); |
| 281 |
if ( ! empty( $_SERVER['HTTP_USER_AGENT'] ) ) { |
| 282 |
foreach( $rejected_useragents as $ua ) { |
| 283 |
if ( empty( $ua ) ) continue; |
| 284 |
|
| 285 |
if ( false !== strpos( $_SERVER['HTTP_USER_AGENT'], trim( $ua ) ) ) { |
| 286 |
return false; |
| 287 |
} |
| 288 |
} |
| 289 |
} |
| 290 |
|
| 291 |
// check URL |
| 292 |
$rejected_uris = preg_split( "/\\r\\n|\\r|\\n/u", trim( $settings->rejected_uri ), -1, PREG_SPLIT_NO_EMPTY ); |
| 293 |
$rejected_uris = array_filter( $rejected_uris ); |
| 294 |
$domain = untrailingslashit( home_url() ); |
| 295 |
if ( ! empty( $_SERVER['REQUEST_URI'] ) ) { |
| 296 |
foreach( $rejected_uris as $url ) { |
| 297 |
$url = str_replace( $domain, '', $url ); |
| 298 |
$url = '/' . trim( $url, '/' ); |
| 299 |
$url = str_replace( ['\/*', '*'], ['\/?.*?', '.*?'], preg_quote( $url, '/' ) ); |
| 300 |
if ( @preg_match( "/^{$url}\/?$/", $_SERVER['REQUEST_URI']) ) { |
| 301 |
return false; |
| 302 |
} |
| 303 |
} |
| 304 |
} |
| 305 |
|
| 306 |
return true; |
| 307 |
} |
| 308 |
|
| 309 |
/** |
| 310 |
* Get the mobile browser name |
| 311 |
* |
| 312 |
* @return string |
| 313 |
*/ |
| 314 |
public function detect_mobile() { |
| 315 |
if ( empty( $_SERVER['HTTP_USER_AGENT'] ) ) { |
| 316 |
return ''; |
| 317 |
} |
| 318 |
|
| 319 |
$mobile_browsers = apply_filters( 'ezcache_mobile_browsers', [ |
| 320 |
'2.0 MMP', |
| 321 |
'240x320', |
| 322 |
'400X240', |
| 323 |
'AvantGo', |
| 324 |
'BlackBerry', |
| 325 |
'Blazer', |
| 326 |
'Cellphone', |
| 327 |
'Danger', |
| 328 |
'DoCoMo', |
| 329 |
'Elaine/3.0', |
| 330 |
'EudoraWeb', |
| 331 |
'Googlebot-Mobile', |
| 332 |
'hiptop', |
| 333 |
'IEMobile', |
| 334 |
'KYOCERA/WX310K', |
| 335 |
'LG/U990', |
| 336 |
'MIDP-2.', |
| 337 |
'MMEF20', |
| 338 |
'MOT-V', |
| 339 |
'NetFront', |
| 340 |
'Newt', |
| 341 |
'Nintendo Wii', |
| 342 |
'Nitro', |
| 343 |
'Nokia', |
| 344 |
'Opera Mini', |
| 345 |
'Palm', |
| 346 |
'PlayStation Portable', |
| 347 |
'portalmmm', |
| 348 |
'Proxinet', |
| 349 |
'ProxiNet', |
| 350 |
'SHARP-TQ-GX10', |
| 351 |
'SHG-i900', |
| 352 |
'Small', |
| 353 |
'SonyEricsson', |
| 354 |
'Symbian OS', |
| 355 |
'SymbianOS', |
| 356 |
'TS21i-10', |
| 357 |
'UP.Browser', |
| 358 |
'UP.Link', |
| 359 |
'webOS', |
| 360 |
'Windows CE', |
| 361 |
'WinWAP', |
| 362 |
'YahooSeeker/M1A1-R2D2', |
| 363 |
'iPhone', |
| 364 |
'iPod', |
| 365 |
'iPad', |
| 366 |
'Android', |
| 367 |
'BlackBerry9530', |
| 368 |
'LG-TU915 Obigo', |
| 369 |
'LGE VX', |
| 370 |
'webOS', |
| 371 |
'Nokia5800' |
| 372 |
] ); |
| 373 |
$user_agent = strtolower( $_SERVER['HTTP_USER_AGENT'] ); |
| 374 |
foreach ( $mobile_browsers as $browser ) { |
| 375 |
if ( strstr( $user_agent, trim( strtolower( $browser ) ) ) ) { |
| 376 |
return $user_agent; |
| 377 |
} |
| 378 |
} |
| 379 |
|
| 380 |
if ( isset( $_SERVER['HTTP_X_WAP_PROFILE'] ) ) { |
| 381 |
return $_SERVER['HTTP_X_WAP_PROFILE']; |
| 382 |
} |
| 383 |
|
| 384 |
if ( isset( $_SERVER['HTTP_PROFILE'] ) ) { |
| 385 |
return $_SERVER['HTTP_PROFILE']; |
| 386 |
} |
| 387 |
|
| 388 |
$browser_prefixes = apply_filters( 'ezcache_mobile_browser_prefixes', [ |
| 389 |
'w3c', |
| 390 |
'w3c-', |
| 391 |
'acs-', |
| 392 |
'alav', |
| 393 |
'alca', |
| 394 |
'amoi', |
| 395 |
'audi', |
| 396 |
'avan', |
| 397 |
'benq', |
| 398 |
'bird', |
| 399 |
'blac', |
| 400 |
'blaz', |
| 401 |
'brew', |
| 402 |
'cell', |
| 403 |
'cldc', |
| 404 |
'cmd-', |
| 405 |
'dang', |
| 406 |
'doco', |
| 407 |
'eric', |
| 408 |
'hipt', |
| 409 |
'htc_', |
| 410 |
'inno', |
| 411 |
'ipaq', |
| 412 |
'ipod', |
| 413 |
'jigs', |
| 414 |
'kddi', |
| 415 |
'keji', |
| 416 |
'leno', |
| 417 |
'lg-c', |
| 418 |
'lg-d', |
| 419 |
'lg-g', |
| 420 |
'lge-', |
| 421 |
'lg/u', |
| 422 |
'maui', |
| 423 |
'maxo', |
| 424 |
'midp', |
| 425 |
'mits', |
| 426 |
'mmef', |
| 427 |
'mobi', |
| 428 |
'mot-', |
| 429 |
'moto', |
| 430 |
'mwbp', |
| 431 |
'nec-', |
| 432 |
'newt', |
| 433 |
'noki', |
| 434 |
'palm', |
| 435 |
'pana', |
| 436 |
'pant', |
| 437 |
'phil', |
| 438 |
'play', |
| 439 |
'port', |
| 440 |
'prox', |
| 441 |
'qwap', |
| 442 |
'sage', |
| 443 |
'sams', |
| 444 |
'sany', |
| 445 |
'sch-', |
| 446 |
'sec-', |
| 447 |
'send', |
| 448 |
'seri', |
| 449 |
'sgh-', |
| 450 |
'shar', |
| 451 |
'sie-', |
| 452 |
'siem', |
| 453 |
'smal', |
| 454 |
'smar', |
| 455 |
'sony', |
| 456 |
'sph-', |
| 457 |
'symb', |
| 458 |
't-mo', |
| 459 |
'teli', |
| 460 |
'tim-', |
| 461 |
'tosh', |
| 462 |
'tsm-', |
| 463 |
'upg1', |
| 464 |
'upsi', |
| 465 |
'vk-v', |
| 466 |
'voda', |
| 467 |
'wap-', |
| 468 |
'wapa', |
| 469 |
'wapi', |
| 470 |
'wapp', |
| 471 |
'wapr', |
| 472 |
'webc', |
| 473 |
'winw', |
| 474 |
'winw', |
| 475 |
'xda', |
| 476 |
'xda-' |
| 477 |
] ); |
| 478 |
foreach ( $browser_prefixes as $prefix ) { |
| 479 |
if ( substr( $user_agent, 0, 4 ) == $prefix ) { |
| 480 |
return $prefix; |
| 481 |
} |
| 482 |
} |
| 483 |
|
| 484 |
$accept = isset( $_SERVER['HTTP_ACCEPT'] ) ? strtolower( $_SERVER['HTTP_ACCEPT'] ) : ''; |
| 485 |
if ( strpos( $accept, 'wap' ) !== false ) { |
| 486 |
return 'wap'; |
| 487 |
} |
| 488 |
|
| 489 |
if ( isset( $_SERVER['ALL_HTTP'] ) && false !== strpos( strtolower( $_SERVER['ALL_HTTP'] ), 'operamini' ) ) { |
| 490 |
return 'operamini'; |
| 491 |
} |
| 492 |
|
| 493 |
return ''; |
| 494 |
} |
| 495 |
|
| 496 |
/** |
| 497 |
* Search & replace in a string |
| 498 |
* |
| 499 |
* @param string|string[] $search |
| 500 |
* @param string $subject |
| 501 |
* |
| 502 |
* @return string |
| 503 |
*/ |
| 504 |
public function deep_replace( $search, $subject ) { |
| 505 |
$subject = (string) $subject; |
| 506 |
|
| 507 |
$count = 1; |
| 508 |
while ( $count ) { |
| 509 |
$subject = str_replace( $search, '', $subject, $count ); |
| 510 |
} |
| 511 |
|
| 512 |
return $subject; |
| 513 |
} |
| 514 |
|
| 515 |
/** |
| 516 |
* Get the cache directory URL for the current post |
| 517 |
* |
| 518 |
* @param int $post_id |
| 519 |
* |
| 520 |
* @return mixed|string |
| 521 |
*/ |
| 522 |
public function get_current_url_cache_dir( $post_id = 0 ) { |
| 523 |
static $url_cache_dir = array(); |
| 524 |
|
| 525 |
if ( isset( $url_cache_dir[ $post_id ] ) ) { |
| 526 |
return $url_cache_dir[ $post_id ]; |
| 527 |
} |
| 528 |
|
| 529 |
$uri = strtolower( $_SERVER['REQUEST_URI'] ); |
| 530 |
|
| 531 |
$DONOTREMEMBER = 0; |
| 532 |
if ( 0 !== $post_id ) { |
| 533 |
$site_url = site_url(); |
| 534 |
$permalink = get_permalink( $post_id ); |
| 535 |
if ( false === strpos( $permalink, $site_url ) ) { |
| 536 |
$DONOTREMEMBER = 1; |
| 537 |
if ( preg_match( '`^(https?:)?//([^/]+)(/.*)?$`i', $permalink, $matches ) ) { |
| 538 |
$uri = isset( $matches[3] ) ? $matches[3] : ''; |
| 539 |
} elseif ( preg_match( '`^/([^/]+)(/.*)?$`i', $permalink, $matches ) ) { |
| 540 |
$uri = $permalink; |
| 541 |
} else { |
| 542 |
$uri = ''; |
| 543 |
} |
| 544 |
} else { |
| 545 |
$uri = str_replace( $site_url, '', $permalink ); |
| 546 |
if ( 0 !== strpos( $uri, '/' ) ) { |
| 547 |
$uri = '/' . $uri; |
| 548 |
} |
| 549 |
} |
| 550 |
} |
| 551 |
|
| 552 |
$uri = $this->deep_replace( |
| 553 |
[ |
| 554 |
'..', |
| 555 |
'\\', |
| 556 |
'index.php' |
| 557 |
], |
| 558 |
preg_replace( |
| 559 |
'/[ <>\'\"\r\n\t\(\)]/', |
| 560 |
'', |
| 561 |
preg_replace( "/(\?.*)?(#.*)?$/", '', $uri ) |
| 562 |
) |
| 563 |
); |
| 564 |
|
| 565 |
$uri = md5( $uri ); |
| 566 |
$dir = str_replace( '..', '', str_replace( '//', '/', $uri . '/' ) ); |
| 567 |
|
| 568 |
if ( $DONOTREMEMBER == 0 ) { |
| 569 |
$url_cache_dir[ $post_id ] = $dir; |
| 570 |
} |
| 571 |
|
| 572 |
return $dir; |
| 573 |
} |
| 574 |
|
| 575 |
/** |
| 576 |
* Get the cache directory path |
| 577 |
* |
| 578 |
* @param int $postid |
| 579 |
* |
| 580 |
* @return string |
| 581 |
*/ |
| 582 |
public function get_real_cache_dir( $postid = 0 ) { |
| 583 |
return $this->get_default_cache_path() . $this->get_current_url_cache_dir( $postid ); |
| 584 |
} |
| 585 |
|
| 586 |
/** |
| 587 |
* Get the full cache file path |
| 588 |
* |
| 589 |
* @param int $postid |
| 590 |
* |
| 591 |
* @return string |
| 592 |
*/ |
| 593 |
public function get_cache_file_path( $postid = 0 ) { |
| 594 |
return $this->get_real_cache_dir( $postid ) . $this->get_cache_filename(); |
| 595 |
} |
| 596 |
|
| 597 |
/** |
| 598 |
* Get the filename for the cached file |
| 599 |
* |
| 600 |
* @return string |
| 601 |
*/ |
| 602 |
public function get_cache_filename() { |
| 603 |
$settings = $this->settings; |
| 604 |
|
| 605 |
// Add support for https and http caching |
| 606 |
// also supports https requests coming from an nginx reverse proxy |
| 607 |
$is_https = ( ( isset( $_SERVER['HTTPS'] ) && 'on' == strtolower( $_SERVER['HTTPS'] ) ) || ( isset( $_SERVER['HTTP_X_FORWARDED_PROTO'] ) && 'https' == strtolower( $_SERVER['HTTP_X_FORWARDED_PROTO'] ) ) ); |
| 608 |
$extra_str = $is_https ? '-https' : ''; |
| 609 |
|
| 610 |
if ( $settings->separate_mobile_cache ) { |
| 611 |
$mobile_ua = $this->detect_mobile(); |
| 612 |
if ( ! empty( $mobile_ua ) ) { |
| 613 |
$extra_str .= '-mobile'; |
| 614 |
} |
| 615 |
} |
| 616 |
|
| 617 |
if ( $settings->enable_webp_support && $this->webp_accepted()) { |
| 618 |
$extra_str .= '-webp'; |
| 619 |
} |
| 620 |
|
| 621 |
$filename = 'index'; |
| 622 |
if ( ! empty( $_SERVER['QUERY_STRING'] ) ) { |
| 623 |
$filename = md5( $_SERVER['QUERY_STRING'] ); |
| 624 |
} |
| 625 |
|
| 626 |
return $filename . $extra_str . '.html'; |
| 627 |
} |
| 628 |
|
| 629 |
/** |
| 630 |
* Check if we have a cached file and serve it |
| 631 |
*/ |
| 632 |
public function maybe_serve_cached_data() { |
| 633 |
if ( ! $this->should_serve_cached_data() ) { |
| 634 |
return; |
| 635 |
} |
| 636 |
|
| 637 |
$cache_file = $this->get_cache_file_path(); |
| 638 |
$gzip_accepted = $this->gzip_accepted(); |
| 639 |
|
| 640 |
$serve_gzip = $gzip_accepted && file_exists( $cache_file . '.gz' ); |
| 641 |
$cache_file = $serve_gzip ? ($cache_file . '.gz') : $cache_file; |
| 642 |
$filesize = file_exists( $cache_file ) ? @filesize( $cache_file ) : false; |
| 643 |
|
| 644 |
if ( ! $filesize ) { |
| 645 |
// the file is empty, we have nothing to serve |
| 646 |
return; |
| 647 |
} |
| 648 |
|
| 649 |
header( "X-Cached-With: ezCache" ); |
| 650 |
header( "Vary: Accept-Encoding, Cookie" ); |
| 651 |
// header( "Content-Length: {$filesize}" ); |
| 652 |
header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s', filemtime( $cache_file ) ) . ' GMT' ); |
| 653 |
|
| 654 |
// Getting If-Modified-Since headers sent by the client. |
| 655 |
if ( function_exists( 'apache_request_headers' ) ) { |
| 656 |
$headers = apache_request_headers(); |
| 657 |
$http_if_modified_since = ( isset( $headers['If-Modified-Since'] ) ) ? $headers['If-Modified-Since'] : ''; |
| 658 |
} else { |
| 659 |
$http_if_modified_since = ( isset( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) ? $_SERVER['HTTP_IF_MODIFIED_SINCE'] : ''; |
| 660 |
} |
| 661 |
|
| 662 |
// Checking if the client is validating his cache and if it is current. |
| 663 |
if ( $http_if_modified_since && ( strtotime( $http_if_modified_since ) === @filemtime( $cache_file ) ) ) { |
| 664 |
// Client's cache is current, so we just respond '304 Not Modified'. |
| 665 |
header( $_SERVER['SERVER_PROTOCOL'] . ' 304 Not Modified', true, 304 ); |
| 666 |
exit; |
| 667 |
} |
| 668 |
|
| 669 |
// Serve the cache if file isn't store in the client browser cache. |
| 670 |
if ( $serve_gzip ) { |
| 671 |
readgzfile( $cache_file ); |
| 672 |
exit; |
| 673 |
} |
| 674 |
|
| 675 |
readfile( $cache_file ); |
| 676 |
exit; |
| 677 |
} |
| 678 |
|
| 679 |
/** |
| 680 |
* Write cache file if we need to |
| 681 |
*/ |
| 682 |
public function maybe_write_cache_file() { |
| 683 |
if ( ! $this->should_serve_cached_data() ) { |
| 684 |
return; |
| 685 |
} |
| 686 |
|
| 687 |
ob_start( [ $this, 'optimize_and_write_cache_file' ] ); |
| 688 |
} |
| 689 |
|
| 690 |
/** |
| 691 |
* Optimize output and write the buffer to the cache file |
| 692 |
* |
| 693 |
* @param string $buffer |
| 694 |
* |
| 695 |
* @return string |
| 696 |
*/ |
| 697 |
public function optimize_and_write_cache_file( $buffer ) { |
| 698 |
global $wpdb; |
| 699 |
|
| 700 |
// we need these check to run after WordPress is finished preparing the page |
| 701 |
if ( ! $this->should_save_cache() ) { |
| 702 |
return $buffer; |
| 703 |
} |
| 704 |
|
| 705 |
$real_cache_dir = $this->get_real_cache_dir(); |
| 706 |
$cache_file = $this->get_cache_file_path(); |
| 707 |
$asset_cache_dir = $this->get_default_cache_path() . 'min/'; |
| 708 |
$asset_cache_url = trailingslashit( trailingslashit( get_home_url() ) . trim( str_replace( dirname( WP_CONTENT_DIR ), '', $asset_cache_dir ), '/' ) ); |
| 709 |
$settings = $this->settings; |
| 710 |
|
| 711 |
if ( $settings->minify_css ) { |
| 712 |
if ( $settings->combine_css ) { |
| 713 |
$optimizer = new CssCombiner( $asset_cache_dir, $asset_cache_url ); |
| 714 |
} else { |
| 715 |
$optimizer = new CssMinifier( $asset_cache_dir, $asset_cache_url ); |
| 716 |
} |
| 717 |
|
| 718 |
$buffer = $optimizer->optimize( $buffer ); |
| 719 |
} |
| 720 |
|
| 721 |
if ( $settings->minify_js ) { |
| 722 |
if ( $settings->combine_head_js ) { |
| 723 |
$optimizer = new JsCombiner( $asset_cache_dir, $asset_cache_url, 'head' ); |
| 724 |
$buffer = $optimizer->optimize( $buffer ); |
| 725 |
} |
| 726 |
|
| 727 |
if ( $settings->combine_body_js ) { |
| 728 |
$optimizer = new JsCombiner( $asset_cache_dir, $asset_cache_url, 'body' ); |
| 729 |
$buffer = $optimizer->optimize( $buffer ); |
| 730 |
} |
| 731 |
|
| 732 |
if( ! $settings->combine_head_js && ! $settings->combine_body_js ) { |
| 733 |
$optimizer = new JsMinifier( $asset_cache_dir, $asset_cache_url ); |
| 734 |
$buffer = $optimizer->optimize( $buffer ); |
| 735 |
} |
| 736 |
} |
| 737 |
|
| 738 |
if ( $settings->minify_html ) { |
| 739 |
$buffer = Minify_HTML::minify( $buffer, [ |
| 740 |
'cssMinifier' => function( $css ) use ($settings) { |
| 741 |
if ( ! $settings->minify_inline_css ) { |
| 742 |
return $css; |
| 743 |
} |
| 744 |
|
| 745 |
$minifier = new CSS( $css ); |
| 746 |
return $minifier->minify(); |
| 747 |
}, |
| 748 |
|
| 749 |
'jsMinifier' => function( $js ) use ($settings) { |
| 750 |
if ( ! $settings->minify_inline_js ) { |
| 751 |
return $js; |
| 752 |
} |
| 753 |
|
| 754 |
$minifier = new JS( $js ); |
| 755 |
return $minifier->minify(); |
| 756 |
}, |
| 757 |
] ); |
| 758 |
} |
| 759 |
|
| 760 |
if ( $settings->enable_webp_support && $this->webp_accepted() ) { |
| 761 |
$optimizer = new WebpConverter( $real_cache_dir, $cache_file, $this->webp_processor, $wpdb ); |
| 762 |
$buffer = $optimizer->optimize( $buffer ); |
| 763 |
} |
| 764 |
|
| 765 |
if ( ! apply_filters( 'wp_bost_hide_cache_time_comment', false ) ) { |
| 766 |
$total_time = number_format( microtime( true ) - $this->cache_start_time, 2 ); |
| 767 |
$buffer .= "\n<!-- Cached by ezCache -->\n<!-- Cache created in {$total_time}s -->"; |
| 768 |
} |
| 769 |
|
| 770 |
$buffer = apply_filters( 'ezcache_before_save_cache', $buffer ); |
| 771 |
|
| 772 |
if ( ! file_exists( $real_cache_dir ) ) { |
| 773 |
if ( ! @wp_mkdir_p( $real_cache_dir ) ) { |
| 774 |
error_log( 'ezCache could not create directory ' . $real_cache_dir ); |
| 775 |
return $buffer; |
| 776 |
} |
| 777 |
} |
| 778 |
|
| 779 |
// write regular file |
| 780 |
if ( ! @file_put_contents( $cache_file, $buffer ) ) { |
| 781 |
error_log( 'ezCache could not write to ' . str_replace( ABSPATH, '', $cache_file ) ); |
| 782 |
} |
| 783 |
|
| 784 |
// write gzipped file |
| 785 |
if ( ! @file_put_contents( $cache_file . '.gz', gzencode( $buffer, 6, FORCE_GZIP ) ) ) { |
| 786 |
error_log( 'ezCache could not write to ' . str_replace( ABSPATH, '', $cache_file . '.gz' ) ); |
| 787 |
} |
| 788 |
|
| 789 |
$this->webp_processor->dispatch(); |
| 790 |
|
| 791 |
return $buffer; |
| 792 |
} |
| 793 |
|
| 794 |
/** |
| 795 |
* Delete a path recursively |
| 796 |
* |
| 797 |
* @param string $path |
| 798 |
*/ |
| 799 |
public function rmdir_recursive( $path ) { |
| 800 |
if ( ! file_exists( $path ) ) { |
| 801 |
return; |
| 802 |
} |
| 803 |
|
| 804 |
$files = glob( $path . '/*' ); |
| 805 |
foreach ( $files as $file ) { |
| 806 |
is_dir( $file ) ? $this->rmdir_recursive( $file ) : unlink( $file ); |
| 807 |
} |
| 808 |
rmdir( $path ); |
| 809 |
} |
| 810 |
|
| 811 |
/** |
| 812 |
* Preload the homepage and immediately create cache for it |
| 813 |
*/ |
| 814 |
public function preload_homepage() { |
| 815 |
$desktop_ua = apply_filters( |
| 816 |
'ezcache_desktop_useragent', |
| 817 |
'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36 (ezCache Preload)' |
| 818 |
); |
| 819 |
$mobile_ua = apply_filters( |
| 820 |
'ezcache_mobile_useragent', |
| 821 |
'Mozilla/5.0 (iPhone; CPU iPhone OS 12_0 like Mac OS X) AppleWebKit/ 604.1.21 (KHTML, like Gecko) Version/ 12.0 Mobile/17A6278a Safari/602.1.26 (ezCache Preload)' |
| 822 |
); |
| 823 |
|
| 824 |
wp_safe_remote_get( home_url(), [ |
| 825 |
'user-agent' => $desktop_ua, |
| 826 |
'timeout' => 0.1, |
| 827 |
] ); |
| 828 |
|
| 829 |
wp_safe_remote_get( home_url(), [ |
| 830 |
'user-agent' => $mobile_ua, |
| 831 |
'timeout' => 0.1, |
| 832 |
] ); |
| 833 |
} |
| 834 |
|
| 835 |
function delete_missing_webp_images() { |
| 836 |
global $wpdb; |
| 837 |
|
| 838 |
$ids = [0]; |
| 839 |
$images = $wpdb->get_results( "SELECT * FROM `{$wpdb->prefix}ezcache_webp_images` WHERE `status` = 'completed'" ); |
| 840 |
foreach( $images as $image ) { |
| 841 |
if ( ! file_exists( $image->webp_path ) ) { |
| 842 |
$ids[] = $image->id; |
| 843 |
} elseif ( ! file_exists( $image->path ) && file_exists( $image->webp_path ) ) { |
| 844 |
unlink( $image->webp_path ); |
| 845 |
$ids[] = $image->id; |
| 846 |
} |
| 847 |
} |
| 848 |
|
| 849 |
$wpdb->query( |
| 850 |
$wpdb->prepare( |
| 851 |
"DELETE FROM `{$wpdb->prefix}ezcache_webp_images` WHERE `status` = 'failed' OR `id` IN ( " . substr( str_repeat( "%d, ", count( $ids ) ), 0, -2 ) . " )", |
| 852 |
$ids |
| 853 |
) |
| 854 |
); |
| 855 |
|
| 856 |
$wpdb->query( "OPTIMIZE TABLE `{$wpdb->prefix}ezcache_webp_images`" ); |
| 857 |
} |
| 858 |
|
| 859 |
/** |
| 860 |
* Clear all caches |
| 861 |
*/ |
| 862 |
public function clear_cache() { |
| 863 |
$cache_dir = $this->get_default_cache_path(); |
| 864 |
|
| 865 |
$this->rmdir_recursive( $cache_dir ); |
| 866 |
@wp_mkdir_p( $cache_dir ); |
| 867 |
|
| 868 |
$this->delete_missing_webp_images(); |
| 869 |
|
| 870 |
$this->preload_homepage(); |
| 871 |
} |
| 872 |
|
| 873 |
/** |
| 874 |
* Clear cache for a single post |
| 875 |
* |
| 876 |
* @param int $post_id |
| 877 |
*/ |
| 878 |
public function clear_cache_single( $post_id ) { |
| 879 |
$real_cache_dir = $this->get_real_cache_dir( $post_id ); |
| 880 |
|
| 881 |
$this->rmdir_recursive( $real_cache_dir ); |
| 882 |
} |
| 883 |
|
| 884 |
/** |
| 885 |
* Delete expired cache |
| 886 |
*/ |
| 887 |
public function clear_expired_cache() { |
| 888 |
$settings = $this->settings; |
| 889 |
|
| 890 |
try { |
| 891 |
$dir = new RecursiveDirectoryIterator( $this->root_cache_dir ); |
| 892 |
$ite = new RecursiveIteratorIterator( $dir ); |
| 893 |
$files = new RegexIterator( $ite, '/^.+\.(?:gz|html|js|css)$/i', RegexIterator::GET_MATCH ); |
| 894 |
} catch( UnexpectedValueException $ex) { |
| 895 |
if ( strpos( $ex->getMessage(), 'No such file or directory' ) ) { |
| 896 |
$files = []; |
| 897 |
} else { |
| 898 |
throw $ex; |
| 899 |
} |
| 900 |
} |
| 901 |
|
| 902 |
foreach($files as $file) { |
| 903 |
if ( is_array( $file ) ) { |
| 904 |
$file = array_shift( $file ); |
| 905 |
} |
| 906 |
|
| 907 |
$stats = stat( $file ); |
| 908 |
if ( $stats['mtime'] > ( time() - $settings->cache_lifetime ) ) { |
| 909 |
// skip not expired files |
| 910 |
continue; |
| 911 |
} |
| 912 |
|
| 913 |
@unlink( $file ); |
| 914 |
} |
| 915 |
} |
| 916 |
|
| 917 |
/** |
| 918 |
* Get caching statistics and file sizes |
| 919 |
* @return array |
| 920 |
*/ |
| 921 |
public function get_cache_stats() { |
| 922 |
$settings = $this->settings; |
| 923 |
$cache_dir = $this->get_default_cache_path(); |
| 924 |
|
| 925 |
try { |
| 926 |
$dir = new RecursiveDirectoryIterator( $cache_dir ); |
| 927 |
$ite = new RecursiveIteratorIterator( $dir ); |
| 928 |
$files = new RegexIterator( $ite, '/^.+\.(?:gz|html|css|js)$/i', RegexIterator::GET_MATCH ); |
| 929 |
} catch( UnexpectedValueException $ex) { |
| 930 |
if ( strpos( $ex->getMessage(), 'No such file or directory' ) ) { |
| 931 |
$files = []; |
| 932 |
} else { |
| 933 |
throw $ex; |
| 934 |
} |
| 935 |
} |
| 936 |
|
| 937 |
$raw_data = []; |
| 938 |
|
| 939 |
$mobile_count = 0; |
| 940 |
$mobile_size = 0; |
| 941 |
$mobile_expired_count = 0; |
| 942 |
$mobile_expired_size = 0; |
| 943 |
$desktop_count = 0; |
| 944 |
$desktop_size = 0; |
| 945 |
$desktop_expired_count = 0; |
| 946 |
$desktop_expired_size = 0; |
| 947 |
$js_count = 0; |
| 948 |
$js_size = 0; |
| 949 |
$js_expired_count = 0; |
| 950 |
$js_expired_size = 0; |
| 951 |
$css_count = 0; |
| 952 |
$css_size = 0; |
| 953 |
$css_expired_count = 0; |
| 954 |
$css_expired_size = 0; |
| 955 |
|
| 956 |
foreach($files as $file) { |
| 957 |
if ( is_array( $file ) ) { |
| 958 |
$file = array_shift( $file ); |
| 959 |
} |
| 960 |
|
| 961 |
$stats = stat( $file ); |
| 962 |
$expired = $stats['mtime'] <= (time() - $settings->cache_lifetime); |
| 963 |
|
| 964 |
$raw_data[] = [ |
| 965 |
'path' => $file, |
| 966 |
'stats' => $stats, |
| 967 |
'expired' => $expired, |
| 968 |
]; |
| 969 |
|
| 970 |
if ( preg_match( '/^.+?-mobile\.html(\.gz)?$/i', $file ) ) { |
| 971 |
if ( ! $expired ) { |
| 972 |
$mobile_count++; |
| 973 |
$mobile_size += $stats['size']; |
| 974 |
} else { |
| 975 |
$mobile_expired_count++; |
| 976 |
$mobile_expired_size += $stats['size']; |
| 977 |
} |
| 978 |
} elseif( preg_match( '/\.css$/i', $file ) ) { |
| 979 |
if ( $expired ) { |
| 980 |
$css_expired_count++; |
| 981 |
$css_expired_size += $stats['size']; |
| 982 |
} else { |
| 983 |
$css_count ++; |
| 984 |
$css_size += $stats['size']; |
| 985 |
} |
| 986 |
} elseif( preg_match( '/\.js$/i', $file ) ) { |
| 987 |
if ( $expired ) { |
| 988 |
$js_expired_count++; |
| 989 |
$js_expired_size += $stats['size']; |
| 990 |
} else { |
| 991 |
$js_count ++; |
| 992 |
$js_size += $stats['size']; |
| 993 |
} |
| 994 |
} else { |
| 995 |
if ( ! $expired ) { |
| 996 |
$desktop_count++; |
| 997 |
$desktop_size += $stats['size']; |
| 998 |
} else { |
| 999 |
$desktop_expired_count++; |
| 1000 |
$desktop_expired_size += $stats['size']; |
| 1001 |
} |
| 1002 |
} |
| 1003 |
} |
| 1004 |
|
| 1005 |
// we want to count only the number of pages which have cache, but we have 2 files for each page |
| 1006 |
$mobile_count = $mobile_count / 2; |
| 1007 |
$desktop_count = $desktop_count / 2; |
| 1008 |
|
| 1009 |
|
| 1010 |
global $wpdb; |
| 1011 |
$webp_images = 0; |
| 1012 |
$webp_images_size = 0; |
| 1013 |
$webp_images_original_size = 0; |
| 1014 |
|
| 1015 |
$results = $wpdb->get_row( "SELECT COUNT(*) AS total, SUM(`original_size`) AS total_original_size, SUM(`webp_size`) AS total_webp_size FROM `{$wpdb->prefix}ezcache_webp_images` WHERE `status` = 'completed'" ); |
| 1016 |
if ( $results ) { |
| 1017 |
$webp_images = intval( $results->total ); |
| 1018 |
$webp_images_size = intval( $results->total_webp_size ); |
| 1019 |
$webp_images_original_size = intval( $results->total_original_size ); |
| 1020 |
} |
| 1021 |
|
| 1022 |
return compact( 'webp_images', 'webp_images_original_size', 'webp_images_size', 'mobile_count', 'desktop_count', 'mobile_expired_count', 'desktop_expired_count', 'mobile_size', 'desktop_size', 'mobile_expired_size', 'desktop_expired_size' ,'css_size', 'css_count', 'js_count', 'js_size', 'css_expired_count', 'css_expired_size', 'js_expired_count', 'js_expired_size' ); |
| 1023 |
} |
| 1024 |
|
| 1025 |
/** |
| 1026 |
* Get the status of the cache |
| 1027 |
* |
| 1028 |
* @return array |
| 1029 |
*/ |
| 1030 |
public function get_status() { |
| 1031 |
$wp_cache_enabled = defined( 'WP_CACHE' ) && WP_CACHE; |
| 1032 |
$adv_cache_exists = file_exists( WP_CONTENT_DIR . '/advanced-cache.php' ); |
| 1033 |
$correct_advanced_cache = $adv_cache_exists && strpos( file_get_contents( WP_CONTENT_DIR . '/advanced-cache.php' ), 'ezCache Advanced Cache' ) !== false; |
| 1034 |
|
| 1035 |
return [ |
| 1036 |
'cache_enabled' => $wp_cache_enabled, |
| 1037 |
'adv_cache_exists' => $adv_cache_exists, |
| 1038 |
'correct_cache_exists' => $correct_advanced_cache, |
| 1039 |
]; |
| 1040 |
} |
| 1041 |
|
| 1042 |
/** |
| 1043 |
* Get a path by the URL |
| 1044 |
* |
| 1045 |
* @param string $url |
| 1046 |
* |
| 1047 |
* @return bool|string |
| 1048 |
*/ |
| 1049 |
public static function url_to_path( $url ) { |
| 1050 |
$root_dir = trailingslashit( dirname( WP_CONTENT_DIR ) ); |
| 1051 |
$root_url = str_replace( wp_basename( WP_CONTENT_DIR ), '', WP_CONTENT_URL ); |
| 1052 |
$url_host = wp_parse_url( $url, PHP_URL_HOST ); |
| 1053 |
|
| 1054 |
if ( null === $url_host ) { |
| 1055 |
$subdir_levels = substr_count( preg_replace( '/https?:\/\//','', site_url() ), '/' ); |
| 1056 |
$url = site_url() . str_repeat( '/..', $subdir_levels ) . $url; |
| 1057 |
} |
| 1058 |
|
| 1059 |
$root_url = preg_replace( '/^https?:/', '', $root_url ); |
| 1060 |
$url = preg_replace( '/^https?:/', '', $url ); |
| 1061 |
$file = str_replace( $root_url, $root_dir, $url ); |
| 1062 |
$file = self::realpath( $file ); |
| 1063 |
|
| 1064 |
if ( ! file_exists( $file ) ) { |
| 1065 |
return false; |
| 1066 |
} |
| 1067 |
|
| 1068 |
return $file; |
| 1069 |
} |
| 1070 |
|
| 1071 |
/** |
| 1072 |
* Returns canonicalized absolute pathname. |
| 1073 |
* The resulting path will have no symbolic link, '/./' or '/../' components. |
| 1074 |
* Same as the defautl PHP realpath() function but works even when the files does not exist. |
| 1075 |
* |
| 1076 |
* @see \realpath() |
| 1077 |
* |
| 1078 |
* @param string $file The path being checked. |
| 1079 |
* |
| 1080 |
* @return string |
| 1081 |
*/ |
| 1082 |
public static function realpath( $file ) { |
| 1083 |
$path = array(); |
| 1084 |
|
| 1085 |
foreach ( explode( '/', $file ) as $part ) { |
| 1086 |
if ( '' === $part || '.' === $part ) { |
| 1087 |
continue; |
| 1088 |
} |
| 1089 |
|
| 1090 |
if ( '..' !== $part ) { |
| 1091 |
array_push( $path, $part ); |
| 1092 |
} |
| 1093 |
elseif ( count( $path ) > 0 ) { |
| 1094 |
array_pop( $path ); |
| 1095 |
} |
| 1096 |
} |
| 1097 |
|
| 1098 |
$prefix = 'WIN' === strtoupper( substr( PHP_OS, 0, 3 ) ) ? '' : '/'; |
| 1099 |
|
| 1100 |
return $prefix . join( '/', $path ); |
| 1101 |
} |
| 1102 |
} |
| 1103 |
|
