wp-super-cache
Last commit date
plugins
18 years ago
Changelog.txt
18 years ago
readme.txt
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wp-cache-base.php
18 years ago
wp-cache-config-sample.php
18 years ago
wp-cache-phase1.php
18 years ago
wp-cache-phase2.php
18 years ago
wp-cache.php
18 years ago
wp-cache-phase2.php
480 lines
| 1 | <?php |
| 2 | |
| 3 | /** Diable here because PHP4.3 does not make the global |
| 4 | Serious bug? |
| 5 | |
| 6 | $mutex_filename = 'wp_cache_mutex.lock'; |
| 7 | $new_cache = false; |
| 8 | */ |
| 9 | |
| 10 | function wp_cache_phase2() { |
| 11 | global $cache_filename, $cache_acceptable_files, $wp_cache_meta_object; |
| 12 | global $wp_cache_gzip_encoding; |
| 13 | |
| 14 | wp_cache_mutex_init(); |
| 15 | if(function_exists('add_action') && ( !defined( 'WPLOCKDOWN' ) || ( defined( 'WPLOCKDOWN' ) && constant( 'WPLOCKDOWN' ) == '0' ) ) ) { |
| 16 | // Post ID is received |
| 17 | add_action('publish_post', 'wp_cache_post_change', 0); |
| 18 | add_action('edit_post', 'wp_cache_post_change', 0); |
| 19 | add_action('delete_post', 'wp_cache_post_change', 0); |
| 20 | add_action('publish_phone', 'wp_cache_post_change', 0); |
| 21 | // Coment ID is received |
| 22 | add_action('trackback_post', 'wp_cache_get_postid_from_comment', 0); |
| 23 | add_action('pingback_post', 'wp_cache_get_postid_from_comment', 0); |
| 24 | add_action('comment_post', 'wp_cache_get_postid_from_comment', 0); |
| 25 | add_action('edit_comment', 'wp_cache_get_postid_from_comment', 0); |
| 26 | add_action('wp_set_comment_status', 'wp_cache_get_postid_from_comment', 0); |
| 27 | // No post_id is available |
| 28 | add_action('delete_comment', 'wp_cache_no_postid', 0); |
| 29 | add_action('switch_theme', 'wp_cache_no_postid', 0); |
| 30 | |
| 31 | do_cacheaction( 'add_cacheaction' ); |
| 32 | } |
| 33 | if( $_SERVER["REQUEST_METHOD"] == 'POST' || get_option('gzipcompression')) |
| 34 | return; |
| 35 | $script = basename($_SERVER['PHP_SELF']); |
| 36 | if (!in_array($script, $cache_acceptable_files) && |
| 37 | wp_cache_is_rejected($_SERVER["REQUEST_URI"])) |
| 38 | return; |
| 39 | if (wp_cache_user_agent_is_rejected()) return; |
| 40 | $wp_cache_meta_object = new CacheMeta; |
| 41 | ob_start('wp_cache_ob_callback'); |
| 42 | register_shutdown_function('wp_cache_shutdown_callback'); |
| 43 | } |
| 44 | |
| 45 | function wp_cache_get_response_headers() { |
| 46 | if(function_exists('apache_response_headers')) { |
| 47 | flush(); |
| 48 | $headers = apache_response_headers(); |
| 49 | } else if(function_exists('headers_list')) { |
| 50 | $headers = array(); |
| 51 | foreach(headers_list() as $hdr) { |
| 52 | list($header_name, $header_value) = explode(': ', $hdr, 2); |
| 53 | $headers[$header_name] = $header_value; |
| 54 | } |
| 55 | } else |
| 56 | $headers = null; |
| 57 | |
| 58 | return $headers; |
| 59 | } |
| 60 | |
| 61 | function wp_cache_is_rejected($uri) { |
| 62 | global $cache_rejected_uri; |
| 63 | |
| 64 | if (strstr($uri, '/wp-admin/')) |
| 65 | return true; // we don't allow caching of wp-admin for security reasons |
| 66 | foreach ($cache_rejected_uri as $expr) { |
| 67 | if( preg_match( "~$expr~", $uri ) ) |
| 68 | return true; |
| 69 | } |
| 70 | return false; |
| 71 | } |
| 72 | |
| 73 | function wp_cache_user_agent_is_rejected() { |
| 74 | global $cache_rejected_user_agent; |
| 75 | |
| 76 | if (!function_exists('apache_request_headers')) return false; |
| 77 | $headers = apache_request_headers(); |
| 78 | if (!isset($headers["User-Agent"])) return false; |
| 79 | foreach ($cache_rejected_user_agent as $expr) { |
| 80 | if (strlen($expr) > 0 && stristr($headers["User-Agent"], $expr)) |
| 81 | return true; |
| 82 | } |
| 83 | return false; |
| 84 | } |
| 85 | |
| 86 | |
| 87 | function wp_cache_mutex_init() { |
| 88 | global $use_flock, $mutex, $cache_path, $mutex_filename, $sem_id; |
| 89 | |
| 90 | if(!is_bool($use_flock)) { |
| 91 | if(function_exists('sem_get')) |
| 92 | $use_flock = false; |
| 93 | else |
| 94 | $use_flock = true; |
| 95 | } |
| 96 | |
| 97 | $mutex = false; |
| 98 | if ($use_flock) |
| 99 | $mutex = @fopen($cache_path . $mutex_filename, 'w'); |
| 100 | else |
| 101 | $mutex = @sem_get($sem_id, 1, 0644 | IPC_CREAT, 1); |
| 102 | } |
| 103 | |
| 104 | function wp_cache_writers_entry() { |
| 105 | global $use_flock, $mutex, $cache_path, $mutex_filename; |
| 106 | |
| 107 | if( !$mutex ) |
| 108 | return false; |
| 109 | |
| 110 | if ($use_flock) |
| 111 | flock($mutex, LOCK_EX); |
| 112 | else |
| 113 | sem_acquire($mutex); |
| 114 | |
| 115 | return true; |
| 116 | } |
| 117 | |
| 118 | function wp_cache_writers_exit() { |
| 119 | global $use_flock, $mutex, $cache_path, $mutex_filename; |
| 120 | |
| 121 | if( !$mutex ) |
| 122 | return false; |
| 123 | |
| 124 | if ($use_flock) |
| 125 | flock($mutex, LOCK_UN); |
| 126 | else |
| 127 | sem_release($mutex); |
| 128 | } |
| 129 | |
| 130 | function wp_cache_ob_callback($buffer) { |
| 131 | global $cache_path, $cache_filename, $meta_file, $wp_start_time, $supercachedir; |
| 132 | global $new_cache, $wp_cache_meta_object, $file_expired, $blog_id, $cache_compression; |
| 133 | global $wp_cache_gzip_encoding, $super_cache_enabled, $cached_direct_pages; |
| 134 | |
| 135 | /* Mode paranoic, check for closing tags |
| 136 | * we avoid caching incomplete files */ |
| 137 | if (is_404() || !preg_match('/(<\/html>|<\/rss>|<\/feed>)/i',$buffer) ) { |
| 138 | $new_cache = false; |
| 139 | return $buffer; |
| 140 | } |
| 141 | |
| 142 | $duration = wp_cache_microtime_diff($wp_start_time, microtime()); |
| 143 | $duration = sprintf("%0.3f", $duration); |
| 144 | $buffer .= "\n<!-- Dynamic Page Served (once) in $duration seconds -->\n"; |
| 145 | |
| 146 | if( !wp_cache_writers_entry() ) |
| 147 | return false; |
| 148 | $mtime = @filemtime($cache_path . $cache_filename); |
| 149 | /* Return if: |
| 150 | the file didn't exist before but it does exist now (another connection created) |
| 151 | OR |
| 152 | the file was expired and its mtime is less than 5 seconds |
| 153 | */ |
| 154 | if( !((!$file_expired && $mtime) || ($mtime && $file_expired && (time() - $mtime) < 5)) ) { |
| 155 | $uri = preg_replace('/[ <>\'\"\r\n\t\(\)]/', '', str_replace( '..', '', $_SERVER['REQUEST_URI']) ); |
| 156 | $dir = strtolower(preg_replace('/:.*$/', '', $_SERVER["HTTP_HOST"])) . $uri; // To avoid XSS attacs |
| 157 | $dir = trailingslashit( $cache_path . 'supercache/' . $dir ); |
| 158 | if( is_array( $cached_direct_pages ) && in_array( $_SERVER[ 'REQUEST_URI' ], $cached_direct_pages ) ) { |
| 159 | $dir = trailingslashit( ABSPATH . $uri ); |
| 160 | } |
| 161 | $supercachedir = $cache_path . 'supercache/' . preg_replace('/:.*$/', '', $_SERVER["HTTP_HOST"]); |
| 162 | if( !empty( $_GET ) || is_feed() || ( $super_cache_enabled == true && is_dir( substr( $supercachedir, 0, -1 ) . '.disabled' ) ) ) |
| 163 | $super_cache_enabled = false; |
| 164 | |
| 165 | $fr = @fopen($cache_path . $cache_filename, 'w'); |
| 166 | if (!$fr) |
| 167 | $buffer = "Couldn't write to: " . $cache_path . $cache_filename . "\n"; |
| 168 | if( $super_cache_enabled ) { |
| 169 | if( @is_dir( $dir ) == false ) |
| 170 | @wp_mkdir_p( $dir ); |
| 171 | |
| 172 | $user_info = wp_cache_get_cookies_values(); |
| 173 | $do_cache = apply_filters( 'do_createsupercache', $user_info ); |
| 174 | if( $user_info == '' || $do_cache === true ) { |
| 175 | $fr2 = @fopen("{$dir}index.html", 'w'); |
| 176 | if( $cache_compression ) |
| 177 | $gz = @gzopen("{$dir}index.html.gz", 'w3'); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | if (preg_match('/<!--mclude|<!--mfunc/', $buffer)) { //Dynamic content |
| 182 | $store = preg_replace('|<!--mclude (.*?)-->(.*?)<!--/mclude-->|is', |
| 183 | "<!--mclude-->\n<?php include_once('" . ABSPATH . "$1'); ?>\n<!--/mclude-->", $buffer); |
| 184 | $store = preg_replace('|<!--mfunc (.*?)-->(.*?)<!--/mfunc-->|is', |
| 185 | "<!--mfunc-->\n<?php $1 ;?>\n<!--/mfunc-->", $store); |
| 186 | $wp_cache_meta_object->dynamic = true; |
| 187 | /* Clean function calls in tag */ |
| 188 | $buffer = preg_replace('|<!--mclude (.*?)-->|is', '<!--mclude-->', $buffer); |
| 189 | $buffer = preg_replace('|<!--mfunc (.*?)-->|is', '<!--mfunc-->', $buffer); |
| 190 | fputs($fr, $store); |
| 191 | if( $fr2 ) |
| 192 | fputs($fr2, $store . '<!-- super cache -->' ); |
| 193 | if( $gz ) |
| 194 | gzwrite($gz, $store . '<!-- super cache gz -->' ); |
| 195 | } else { |
| 196 | $log = "<!-- Cached page served by WP-Cache -->\n"; |
| 197 | |
| 198 | if ($wp_cache_gzip_encoding) { |
| 199 | $log .= "<!-- Compression = " . $wp_cache_gzip_encoding ." -->"; |
| 200 | $gzdata = gzencode($buffer . $log, 3, FORCE_GZIP); |
| 201 | $gzsize = strlen($gzdata); |
| 202 | |
| 203 | array_push($wp_cache_meta_object->headers, 'Content-Encoding: ' . $wp_cache_gzip_encoding); |
| 204 | array_push($wp_cache_meta_object->headers, 'Vary: Accept-Encoding'); |
| 205 | array_push($wp_cache_meta_object->headers, 'Content-Length: ' . strlen($gzdata)); |
| 206 | // Return uncompressed data & store compressed for later use |
| 207 | fputs($fr, $gzdata); |
| 208 | }else{ // no compression |
| 209 | fputs($fr, $buffer.$log); |
| 210 | } |
| 211 | if( $fr2 ) |
| 212 | fputs($fr2, $buffer . '<!-- super cache -->' ); |
| 213 | if( $gz ) |
| 214 | gzwrite($gz, $buffer . '<!-- super cache gz -->' ); |
| 215 | } |
| 216 | $new_cache = true; |
| 217 | fclose($fr); |
| 218 | if( $fr2 ) |
| 219 | fclose($fr2); |
| 220 | if( $gz ) |
| 221 | fclose($gz); |
| 222 | } |
| 223 | wp_cache_writers_exit(); |
| 224 | return $buffer; |
| 225 | } |
| 226 | |
| 227 | function wp_cache_phase2_clean_cache($file_prefix) { |
| 228 | global $cache_path; |
| 229 | |
| 230 | if( !wp_cache_writers_entry() ) |
| 231 | return false; |
| 232 | if ( ($handle = opendir( $cache_path )) ) { |
| 233 | while ( false !== ($file = readdir($handle))) { |
| 234 | if ( preg_match("/^$file_prefix/", $file) ) { |
| 235 | @unlink($cache_path . $file); |
| 236 | } |
| 237 | } |
| 238 | closedir($handle); |
| 239 | } |
| 240 | wp_cache_writers_exit(); |
| 241 | } |
| 242 | |
| 243 | function prune_super_cache($directory, $force = false) { |
| 244 | global $super_cache_max_time, $cache_path; |
| 245 | |
| 246 | if( !isset( $super_cache_max_time ) ) |
| 247 | $super_cache_max_time = 21600; |
| 248 | |
| 249 | $now = time(); |
| 250 | |
| 251 | $protected_directories = array( $cache_path . '.htaccess', $cache_path . 'meta', $cache_path . 'supercache' ); |
| 252 | |
| 253 | $oktodelete = false; |
| 254 | if (is_dir($directory)) { |
| 255 | $directory = trailingslashit( $directory ); |
| 256 | $entries = glob($directory. '*'); |
| 257 | if( is_array( $entries ) && !empty( $entries ) ) foreach ($entries as $entry) { |
| 258 | if ($entry != '.' && $entry != '..') { |
| 259 | prune_super_cache($entry, $force); |
| 260 | if( is_dir( $entry ) && ( $force || @filemtime( $entry ) + $super_cache_max_time <= $now ) ) { |
| 261 | $oktodelete = true; |
| 262 | if( in_array( $entry, $protected_directories ) ) |
| 263 | $oktodelete = false; |
| 264 | if( $oktodelete ) |
| 265 | @rmdir( addslashes( $entry ) ); |
| 266 | } |
| 267 | } |
| 268 | } |
| 269 | } else { |
| 270 | if( is_file($directory) && ($force || filemtime( $directory ) + $super_cache_max_time <= $now ) ) { |
| 271 | $oktodelete = true; |
| 272 | if( in_array( $directory, $protected_directories ) ) |
| 273 | $oktodelete = false; |
| 274 | if( $oktodelete ) |
| 275 | @unlink( addslashes( $directory ) ); |
| 276 | } |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | function wp_cache_phase2_clean_expired($file_prefix) { |
| 281 | global $cache_path, $cache_max_time; |
| 282 | |
| 283 | clearstatcache(); |
| 284 | if( !wp_cache_writers_entry() ) |
| 285 | return false; |
| 286 | $now = time(); |
| 287 | if ( ($handle = opendir( $cache_path )) ) { |
| 288 | while ( false !== ($file = readdir($handle))) { |
| 289 | if ( preg_match("/^$file_prefix/", $file) && |
| 290 | (filemtime($cache_path . $file) + $cache_max_time) <= $now ) { |
| 291 | @unlink($cache_path . $file); |
| 292 | @unlink($cache_path . 'meta/' . str_replace( '.html', '.meta', $file ) ); |
| 293 | continue; |
| 294 | } |
| 295 | if($file != '.' && $file != '..') { |
| 296 | if( is_dir( $cache_path . $file ) == false && (filemtime($cache_path . $file) + $cache_max_time) <= $now ) { |
| 297 | if( substr( $file, -9 ) != '.htaccess' ) |
| 298 | @unlink($cache_path . $file); |
| 299 | } elseif( is_dir( $cache_path . $file ) ) { |
| 300 | prune_super_cache( $cache_path . $file ); |
| 301 | } |
| 302 | } |
| 303 | } |
| 304 | closedir($handle); |
| 305 | } |
| 306 | |
| 307 | wp_cache_writers_exit(); |
| 308 | } |
| 309 | |
| 310 | function wp_cache_shutdown_callback() { |
| 311 | global $cache_path, $cache_max_time, $file_expired, $file_prefix, $meta_file, $new_cache; |
| 312 | global $wp_cache_meta_object, $known_headers, $blog_id; |
| 313 | |
| 314 | $wp_cache_meta_object->uri = $_SERVER["SERVER_NAME"].preg_replace('/[ <>\'\"\r\n\t\(\)]/', '', $_SERVER['REQUEST_URI']); // To avoid XSS attacs |
| 315 | $wp_cache_meta_object->blog_id=$blog_id; |
| 316 | $wp_cache_meta_object->post = wp_cache_post_id(); |
| 317 | |
| 318 | $response = wp_cache_get_response_headers(); |
| 319 | foreach ($known_headers as $key) { |
| 320 | if(isset($response{$key})) { |
| 321 | array_push($wp_cache_meta_object->headers, "$key: " . $response{$key}); |
| 322 | } |
| 323 | } |
| 324 | /* Not used because it gives problems with some |
| 325 | * PHP installations |
| 326 | if (!$response{'Content-Length'}) { |
| 327 | // WP does not set content size |
| 328 | $content_size = ob_get_length(); |
| 329 | @header("Content-Length: $content_size"); |
| 330 | array_push($wp_cache_meta_object->headers, "Content-Length: $content_size"); |
| 331 | } |
| 332 | */ |
| 333 | if (!$response{'Last-Modified'}) { |
| 334 | $value = gmdate('D, d M Y H:i:s') . ' GMT'; |
| 335 | /* Dont send this the first time */ |
| 336 | /* @header('Last-Modified: ' . $value); */ |
| 337 | array_push($wp_cache_meta_object->headers, "Last-Modified: $value"); |
| 338 | } |
| 339 | if (!$response{'Content-Type'} && !$response{'Content-type'}) { |
| 340 | // On some systems, headers set by PHP can't be fetched from |
| 341 | // the output buffer. This is a last ditch effort to set the |
| 342 | // correct Content-Type header for feeds, if we didn't see |
| 343 | // it in the response headers already. -- dougal |
| 344 | if (is_feed()) { |
| 345 | $type = get_query_var('feed'); |
| 346 | $type = str_replace('/','',$type); |
| 347 | switch ($type) { |
| 348 | case 'atom': |
| 349 | $value = "application/atom+xml"; |
| 350 | break; |
| 351 | case 'rdf': |
| 352 | $value = "application/rdf+xml"; |
| 353 | break; |
| 354 | case 'rss': |
| 355 | case 'rss2': |
| 356 | default: |
| 357 | $value = "application/rss+xml"; |
| 358 | } |
| 359 | } else { // not a feed |
| 360 | $value = 'text/html'; |
| 361 | } |
| 362 | $value .= "; charset=\"" . get_option('blog_charset') . "\""; |
| 363 | |
| 364 | @header("Content-Type: $value"); |
| 365 | array_push($wp_cache_meta_object->headers, "Content-Type: $value"); |
| 366 | } |
| 367 | |
| 368 | ob_end_flush(); |
| 369 | if ($new_cache) { |
| 370 | $serial = serialize($wp_cache_meta_object); |
| 371 | if( !wp_cache_writers_entry() ) |
| 372 | return false; |
| 373 | $fr = @fopen($cache_path . 'meta/' . $meta_file, 'w'); |
| 374 | if( !$fr ) |
| 375 | @mkdir( $cache_path . 'meta' ); |
| 376 | $fr = fopen($cache_path . 'meta/' . $meta_file, 'w'); |
| 377 | fputs($fr, $serial); |
| 378 | fclose($fr); |
| 379 | wp_cache_writers_exit(); |
| 380 | } |
| 381 | |
| 382 | if ($file_expired == false) { |
| 383 | return; |
| 384 | } |
| 385 | |
| 386 | // we delete expired files |
| 387 | flush(); //Ensure we send data to the client |
| 388 | wp_cache_phase2_clean_expired($file_prefix); |
| 389 | } |
| 390 | |
| 391 | function wp_cache_no_postid($id) { |
| 392 | return wp_cache_post_change(wp_cache_post_id()); |
| 393 | } |
| 394 | |
| 395 | function wp_cache_get_postid_from_comment($comment_id) { |
| 396 | global $super_cache_enabled; |
| 397 | $comment = get_commentdata($comment_id, 1, true); |
| 398 | $postid = $comment['comment_post_ID']; |
| 399 | // Do nothing if comment is not moderated |
| 400 | // http://ocaoimh.ie/2006/12/05/caching-wordpress-with-wp-cache-in-a-spam-filled-world |
| 401 | if( !preg_match('/wp-admin\//', $_SERVER['REQUEST_URI']) ) |
| 402 | if( $comment['comment_approved'] == 'spam' ) { // changed from 1 to "spam" |
| 403 | return $post_id; |
| 404 | } elseif( $comment['comment_approved'] == '0' ) { |
| 405 | $super_cache_enabled = 0; // don't remove the super cache static file until comment is approved |
| 406 | } |
| 407 | // We must check it up again due to WP bugs calling two different actions |
| 408 | // for delete, for example both wp_set_comment_status and delete_comment |
| 409 | // are called when deleting a comment |
| 410 | if ($postid > 0) |
| 411 | return wp_cache_post_change($postid); |
| 412 | else |
| 413 | return wp_cache_post_change(wp_cache_post_id()); |
| 414 | } |
| 415 | |
| 416 | function wp_cache_post_change($post_id) { |
| 417 | global $file_prefix, $cache_path, $blog_id, $blogcacheid, $super_cache_enabled; |
| 418 | static $last_processed = -1; |
| 419 | |
| 420 | // Avoid cleaning twice the same pages |
| 421 | if ($post_id == $last_processed) return $post_id; |
| 422 | $last_processed = $post_id; |
| 423 | $permalink = trailingslashit( str_replace( get_option( 'siteurl' ), '', post_permalink( $post_id ) ) ); |
| 424 | if( $super_cache_enabled ) { |
| 425 | $permalink = trailingslashit( str_replace( get_option( 'siteurl' ), '', post_permalink( $post_id ) ) ); |
| 426 | $siteurl = str_replace( 'http://', '', get_option( 'siteurl' ) ); |
| 427 | $dir = $cache_path . 'supercache/' . strtolower(preg_replace('/:.*$/', '', $siteurl ) ); |
| 428 | $files_to_delete = array( $dir . '/index.html', $dir . '/feed/index.html', $dir . $permalink . 'index.html', $dir . $permalink . 'feed/index.html' ); |
| 429 | foreach( $files_to_delete as $cache_file ) { |
| 430 | @unlink( $cache_file ); |
| 431 | @unlink( $cache_file . '.gz' ); |
| 432 | } |
| 433 | } |
| 434 | |
| 435 | $meta = new CacheMeta; |
| 436 | $matches = array(); |
| 437 | if( !wp_cache_writers_entry() ) |
| 438 | return $post_id; |
| 439 | if ( ($handle = opendir( $cache_path . 'meta/' )) ) { |
| 440 | while ( false !== ($file = readdir($handle))) { |
| 441 | if ( preg_match("/^({$file_prefix}{$blogcacheid}.*)\.meta/", $file, $matches) ) { |
| 442 | $meta_pathname = $cache_path . 'meta/' . $file; |
| 443 | $content_pathname = $cache_path . $matches[1] . ".html"; |
| 444 | $meta = unserialize(@file_get_contents($meta_pathname)); |
| 445 | if ($post_id > 0 && $meta) { |
| 446 | if ($meta->blog_id == $blog_id && (!$meta->post || $meta->post == $post_id) ) { |
| 447 | @unlink($meta_pathname); |
| 448 | @unlink($content_pathname); |
| 449 | } |
| 450 | } elseif ($meta->blog_id == $blog_id) { |
| 451 | @unlink($meta_pathname); |
| 452 | @unlink($content_pathname); |
| 453 | } |
| 454 | |
| 455 | } |
| 456 | } |
| 457 | closedir($handle); |
| 458 | } |
| 459 | wp_cache_writers_exit(); |
| 460 | return $post_id; |
| 461 | } |
| 462 | |
| 463 | function wp_cache_microtime_diff($a, $b) { |
| 464 | list($a_dec, $a_sec) = explode(' ', $a); |
| 465 | list($b_dec, $b_sec) = explode(' ', $b); |
| 466 | return $b_sec - $a_sec + $b_dec - $a_dec; |
| 467 | } |
| 468 | |
| 469 | function wp_cache_post_id() { |
| 470 | global $posts, $comment_post_ID, $post_ID; |
| 471 | // We try hard all options. More frequent first. |
| 472 | if ($post_ID > 0 ) return $post_ID; |
| 473 | if ($comment_post_ID > 0 ) return $comment_post_ID; |
| 474 | if (is_single() || is_page()) return $posts[0]->ID; |
| 475 | if ($_GET['p'] > 0) return $_GET['p']; |
| 476 | if ($_POST['p'] > 0) return $_POST['p']; |
| 477 | return 0; |
| 478 | } |
| 479 | ?> |
| 480 |