| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* Imagify DB class. It reunites tools to work with the DB. |
| 5 |
* |
| 6 |
* @since 1.6.13 |
| 7 |
* @author Grégory Viguier |
| 8 |
*/ |
| 9 |
class Imagify_DB { |
| 10 |
|
| 11 |
/** |
| 12 |
* Class version. |
| 13 |
* |
| 14 |
* @var string |
| 15 |
*/ |
| 16 |
const VERSION = '1.0.1'; |
| 17 |
|
| 18 |
/** |
| 19 |
* Some hosts limit the number of JOINs in SQL queries, but we need them. |
| 20 |
* |
| 21 |
* @since 1.6.13 |
| 22 |
* @access public |
| 23 |
* @author Grégory Viguier |
| 24 |
*/ |
| 25 |
public static function unlimit_joins() { |
| 26 |
global $wpdb; |
| 27 |
static $done = false; |
| 28 |
|
| 29 |
if ( $done ) { |
| 30 |
return; |
| 31 |
} |
| 32 |
|
| 33 |
$done = true; |
| 34 |
$query = 'SET SQL_BIG_SELECTS=1'; |
| 35 |
|
| 36 |
/** |
| 37 |
* Filter the SQL query allowing to remove the limit on JOINs. |
| 38 |
* |
| 39 |
* @since 1.6.13 |
| 40 |
* @author Grégory Viguier |
| 41 |
* |
| 42 |
* @param string|bool $query The query. False to prevent any query. |
| 43 |
*/ |
| 44 |
$query = apply_filters( 'imagify_db_unlimit_joins_query', $query ); |
| 45 |
|
| 46 |
if ( $query && is_string( $query ) ) { |
| 47 |
$wpdb->query( $query ); // WPCS: unprepared SQL ok. |
| 48 |
} |
| 49 |
} |
| 50 |
|
| 51 |
/** |
| 52 |
* Change an array of values into a comma separated list, ready to be used in a `IN ()` clause. |
| 53 |
* |
| 54 |
* @since 1.6.13 |
| 55 |
* @access public |
| 56 |
* @author Grégory Viguier |
| 57 |
* |
| 58 |
* @param array $values An array of values. |
| 59 |
* @return string A comma separated list of values. |
| 60 |
*/ |
| 61 |
public static function prepare_values_list( $values ) { |
| 62 |
$values = esc_sql( (array) $values ); |
| 63 |
$values = array_map( [ __CLASS__, 'quote_string' ], $values ); |
| 64 |
return implode( ',', $values ); |
| 65 |
} |
| 66 |
|
| 67 |
/** |
| 68 |
* Split a list of values into chunks whose rendered `IN ()` comma separated list |
| 69 |
* stays under a character budget. This prevents hosts (e.g. WP Engine) that kill |
| 70 |
* overly long SQL queries from failing on unbounded `IN ()` lists. |
| 71 |
* |
| 72 |
* @since 2.4 |
| 73 |
* |
| 74 |
* @param array $values An array of values (integers or strings). |
| 75 |
* @param int $sql_budget Maximum character length (rendered, comma separated) allowed per chunk. |
| 76 |
* @return array An array of chunks. Each chunk is an array of values (same type as input). |
| 77 |
*/ |
| 78 |
public static function chunk_in_values( array $values, int $sql_budget = 8000 ): array { |
| 79 |
if ( ! $values ) { |
| 80 |
return []; |
| 81 |
} |
| 82 |
|
| 83 |
/** |
| 84 |
* Filter the SQL character budget used to chunk `IN ()` value lists. |
| 85 |
* |
| 86 |
* @since 2.4 |
| 87 |
* |
| 88 |
* @param int $sql_budget The character budget. |
| 89 |
*/ |
| 90 |
$given_sql_budget = $sql_budget; |
| 91 |
$sql_budget = (int) apply_filters( 'imagify_db_in_clause_sql_budget', $sql_budget ); |
| 92 |
|
| 93 |
if ( $sql_budget < 1 ) { |
| 94 |
// Fall back to the caller's own value if it was valid, otherwise the hardcoded default. |
| 95 |
$sql_budget = ( $given_sql_budget >= 1 ) ? $given_sql_budget : 8000; |
| 96 |
} |
| 97 |
|
| 98 |
$chunks = []; |
| 99 |
$current_chunk = []; |
| 100 |
$current_len = 0; |
| 101 |
|
| 102 |
foreach ( array_values( $values ) as $value ) { |
| 103 |
$rendered_len = strlen( self::quote_string( esc_sql( $value ) ) ); |
| 104 |
// +1 for the comma separator, except for the first value in a chunk. |
| 105 |
$added_len = $current_chunk ? $rendered_len + 1 : $rendered_len; |
| 106 |
|
| 107 |
if ( $current_chunk && ( $current_len + $added_len ) > $sql_budget ) { |
| 108 |
// Start a new chunk. |
| 109 |
$chunks[] = $current_chunk; |
| 110 |
$current_chunk = []; |
| 111 |
$current_len = 0; |
| 112 |
$added_len = $rendered_len; |
| 113 |
} |
| 114 |
|
| 115 |
$current_chunk[] = $value; |
| 116 |
$current_len += $added_len; |
| 117 |
} |
| 118 |
|
| 119 |
if ( $current_chunk ) { |
| 120 |
$chunks[] = $current_chunk; |
| 121 |
} |
| 122 |
|
| 123 |
return $chunks; |
| 124 |
} |
| 125 |
|
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/** |
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* Wrap a value in quotes, unless it's an integer. |
| 128 |
* |
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* @since 1.6.13 |
| 130 |
* @access public |
| 131 |
* @author Grégory Viguier |
| 132 |
* |
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* @param int|string $value A value. |
| 134 |
* @return int|string |
| 135 |
*/ |
| 136 |
public static function quote_string( $value ) { |
| 137 |
return is_numeric( $value ) ? $value : "'" . addcslashes( $value, "'" ) . "'"; |
| 138 |
} |
| 139 |
|
| 140 |
/** |
| 141 |
* First half of escaping for LIKE special characters % and _ before preparing for MySQL. |
| 142 |
* Use this only before wpdb::prepare() or esc_sql(). Reversing the order is very bad for security. |
| 143 |
* |
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* Example Prepared Statement: |
| 145 |
* $wild = '%'; |
| 146 |
* $find = 'only 43% of planets'; |
| 147 |
* $like = $wild . $wpdb->esc_like( $find ) . $wild; |
| 148 |
* $sql = $wpdb->prepare( "SELECT * FROM $wpdb->posts WHERE post_content LIKE %s", $like ); |
| 149 |
* |
| 150 |
* Example Escape Chain: |
| 151 |
* $sql = esc_sql( $wpdb->esc_like( $input ) ); |
| 152 |
* |
| 153 |
* @since 1.7 |
| 154 |
* @access public |
| 155 |
* @author Grégory Viguier |
| 156 |
* |
| 157 |
* @param string $text The raw text to be escaped. The input typed by the user should have no extra or deleted slashes. |
| 158 |
* @return string Text in the form of a LIKE phrase. The output is not SQL safe. Call $wpdb::prepare() or real_escape next. |
| 159 |
*/ |
| 160 |
public static function esc_like( $text ) { |
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global $wpdb; |
| 162 |
|
| 163 |
if ( method_exists( $wpdb, 'esc_like' ) ) { |
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// Introduced in WP 4.0.0. |
| 165 |
return $wpdb->esc_like( $text ); |
| 166 |
} |
| 167 |
|
| 168 |
return addcslashes( $text, '_%\\' ); |
| 169 |
} |
| 170 |
|
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/** |
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* Get Imagify mime types, ready to be used in a `IN ()` clause. |
| 173 |
* |
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* @since 1.6.13 |
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* @since 1.9 Added $type parameter. |
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* @access public |
| 177 |
* @author Grégory Viguier |
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* |
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* @param string $type One of 'image', 'not-image'. Any other value will return all mime types. |
| 180 |
* @return string A comma separated list of mime types. |
| 181 |
*/ |
| 182 |
public static function get_mime_types( $type = null ) { |
| 183 |
static $mime_types = []; |
| 184 |
|
| 185 |
if ( empty( $type ) ) { |
| 186 |
$type = 'all'; |
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} |
| 188 |
|
| 189 |
if ( ! isset( $mime_types[ $type ] ) ) { |
| 190 |
$mime_types[ $type ] = self::prepare_values_list( imagify_get_mime_types( $type ) ); |
| 191 |
} |
| 192 |
|
| 193 |
return $mime_types[ $type ]; |
| 194 |
} |
| 195 |
|
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/** |
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* Get post statuses related to attachments, ready to be used in a `IN ()` clause. |
| 198 |
* |
| 199 |
* @since 1.7 |
| 200 |
* @access public |
| 201 |
* @author Grégory Viguier |
| 202 |
* |
| 203 |
* @return string A comma separated list of post statuses. |
| 204 |
*/ |
| 205 |
public static function get_post_statuses() { |
| 206 |
static $statuses; |
| 207 |
|
| 208 |
if ( ! isset( $statuses ) ) { |
| 209 |
$statuses = self::prepare_values_list( imagify_get_post_statuses() ); |
| 210 |
} |
| 211 |
|
| 212 |
return $statuses; |
| 213 |
} |
| 214 |
|
| 215 |
/** |
| 216 |
* Get the SQL JOIN clause to use to get only attachments that have the required WP metadata. |
| 217 |
* It returns an empty string if the database has no attachments without the required metadada. |
| 218 |
* It also triggers Imagify_DB::unlimit_joins(). |
| 219 |
* |
| 220 |
* @param string $id_field An ID field to match the metadata ID against in the JOIN clause. |
| 221 |
* Default is the posts table `ID` field, using the `p` alias: `p.ID`. |
| 222 |
* In case of "false" value or PEBKAC, fallback to the same field without alias. |
| 223 |
* @param bool $matching Set to false to get a query to fetch metas NOT matching the file extensions. |
| 224 |
* @param bool $test Test if the site has attachments without required metadata before returning the query. False to bypass the test and get the query anyway. |
| 225 |
* @param string $special_join_conditions Special conditions to apply on the join. |
| 226 |
* |
| 227 |
* @return string |
| 228 |
* @author Grégory Viguier |
| 229 |
* |
| 230 |
* @since 1.7 |
| 231 |
* @access public |
| 232 |
*/ |
| 233 |
public static function get_required_wp_metadata_join_clause( $id_field = 'p.ID', $matching = true, $test = true, $special_join_conditions = '' ) { |
| 234 |
global $wpdb; |
| 235 |
|
| 236 |
if ( $test && ! imagify_has_attachments_without_required_metadata() ) { |
| 237 |
return ''; |
| 238 |
} |
| 239 |
|
| 240 |
self::unlimit_joins(); |
| 241 |
$clause = ''; |
| 242 |
|
| 243 |
if ( ! $id_field || ! is_string( $id_field ) ) { |
| 244 |
$id_field = "$wpdb->posts.ID"; |
| 245 |
} |
| 246 |
|
| 247 |
$join = $matching ? 'INNER' : 'LEFT'; |
| 248 |
|
| 249 |
$first = true; |
| 250 |
|
| 251 |
foreach ( self::get_required_wp_metadata_aliases() as $meta_name => $alias ) { |
| 252 |
if ( $first ) { |
| 253 |
$first = false; |
| 254 |
$clause .= " |
| 255 |
$join JOIN $wpdb->postmeta AS $alias |
| 256 |
ON ( $id_field = $alias.post_id AND $alias.meta_key = '$meta_name' $special_join_conditions )"; |
| 257 |
continue; |
| 258 |
} |
| 259 |
$clause .= " |
| 260 |
$join JOIN $wpdb->postmeta AS $alias |
| 261 |
ON ( $id_field = $alias.post_id AND $alias.meta_key = '$meta_name' )"; |
| 262 |
} |
| 263 |
|
| 264 |
return $clause; |
| 265 |
} |
| 266 |
|
| 267 |
|
| 268 |
/** |
| 269 |
* Get the Sub query(exists) clause to use to get only attachments that have the required WP metadata. |
| 270 |
* It returns an empty string if the database has no attachments without the required metadada. |
| 271 |
* |
| 272 |
* @param string $id_field An ID field to match the metadata ID against in the WHERE clause. |
| 273 |
* Default is the posts table `ID` field, using the `p` alias: `p.ID`. |
| 274 |
* @param bool $test Test if the site has attachments without required metadata before returning the query. False to bypass the test and get the query anyway. |
| 275 |
* |
| 276 |
* @return string |
| 277 |
*/ |
| 278 |
public static function get_required_wp_metadata_exist_clause( $id_field = 'p.ID', $test = true ) { |
| 279 |
global $wpdb; |
| 280 |
|
| 281 |
if ( $test && ! imagify_has_attachments_without_required_metadata() ) { |
| 282 |
return ''; |
| 283 |
} |
| 284 |
|
| 285 |
self::unlimit_joins(); |
| 286 |
$clause = ''; |
| 287 |
|
| 288 |
if ( ! $id_field || ! is_string( $id_field ) ) { |
| 289 |
$id_field = "$wpdb->posts.ID"; |
| 290 |
} |
| 291 |
$additional_clause = self::get_required_exist_wp_metadata_where_clause( |
| 292 |
[ |
| 293 |
'matching' => false, |
| 294 |
'test' => false, |
| 295 |
] |
| 296 |
); |
| 297 |
|
| 298 |
$first = true; |
| 299 |
|
| 300 |
foreach ( self::get_required_wp_metadata_aliases() as $meta_name => $alias ) { |
| 301 |
if ( $first ) { |
| 302 |
$first = false; |
| 303 |
$clause .= " |
| 304 |
EXISTS( |
| 305 |
SELECT 1 FROM $wpdb->postmeta AS $alias WHERE |
| 306 |
$alias.post_id = $id_field AND $alias.meta_key = '$meta_name' |
| 307 |
$additional_clause |
| 308 |
) |
| 309 |
"; |
| 310 |
continue; |
| 311 |
} |
| 312 |
|
| 313 |
$clause .= " |
| 314 |
OR NOT EXISTS ( |
| 315 |
SELECT 1 FROM $wpdb->postmeta AS $alias WHERE |
| 316 |
$alias.post_id = $id_field AND $alias.meta_key = '$meta_name')"; |
| 317 |
} |
| 318 |
|
| 319 |
return "AND( $clause )"; |
| 320 |
} |
| 321 |
|
| 322 |
/** |
| 323 |
* Get the SQL part to be used in a WHERE clause, to get only attachments that have (in)valid '_wp_attached_file' and '_wp_attachment_metadata' metadatas. |
| 324 |
* It returns an empty string if the database has no attachments without the required metadada. |
| 325 |
* |
| 326 |
* @since 1.7 |
| 327 |
* @since 1.7.1.2 Use a single $arg parameter instead of 3. New $prepared parameter. |
| 328 |
* @access public |
| 329 |
* @author Grégory Viguier |
| 330 |
* |
| 331 |
* @param array $args { |
| 332 |
* Optional. An array of arguments. |
| 333 |
* |
| 334 |
* string $aliases The aliases to use for the meta values. |
| 335 |
* bool $matching Set to false to get a query to fetch invalid metas. |
| 336 |
* bool $test Test if the site has attachments without required metadata before returning the query. False to bypass the test and get the query anyway. |
| 337 |
* bool $prepared Set to true if the query will be prepared with using $wpdb->prepare(). |
| 338 |
* }. |
| 339 |
* @return string A query. |
| 340 |
*/ |
| 341 |
public static function get_required_wp_metadata_where_clause( $args = [] ) { |
| 342 |
static $query = []; |
| 343 |
|
| 344 |
$args = imagify_merge_intersect( |
| 345 |
$args, |
| 346 |
[ |
| 347 |
'aliases' => [], |
| 348 |
'matching' => true, |
| 349 |
'test' => true, |
| 350 |
'prepared' => false, |
| 351 |
] |
| 352 |
); |
| 353 |
|
| 354 |
list( $aliases, $matching, $test, $prepared ) = array_values( $args ); |
| 355 |
|
| 356 |
if ( $test && ! imagify_has_attachments_without_required_metadata() ) { |
| 357 |
return ''; |
| 358 |
} |
| 359 |
|
| 360 |
if ( $aliases && is_string( $aliases ) ) { |
| 361 |
$aliases = [ |
| 362 |
'_wp_attached_file' => $aliases, |
| 363 |
]; |
| 364 |
} elseif ( ! is_array( $aliases ) ) { |
| 365 |
$aliases = []; |
| 366 |
} |
| 367 |
|
| 368 |
$aliases = imagify_merge_intersect( $aliases, self::get_required_wp_metadata_aliases() ); |
| 369 |
$key = implode( '|', $aliases ) . '|' . (int) $matching; |
| 370 |
|
| 371 |
if ( isset( $query[ $key ] ) ) { |
| 372 |
return $prepared ? str_replace( '%', '%%', $query[ $key ] ) : $query[ $key ]; |
| 373 |
} |
| 374 |
|
| 375 |
unset( $args['prepared'] ); |
| 376 |
$alias_1 = $aliases['_wp_attached_file']; |
| 377 |
$alias_2 = $aliases['_wp_attachment_metadata']; |
| 378 |
$extensions = self::get_extensions_where_clause( $args ); |
| 379 |
|
| 380 |
if ( $matching ) { |
| 381 |
$query[ $key ] = "AND $alias_1.meta_value NOT LIKE '%://%' AND $alias_1.meta_value NOT LIKE '_:\\\\\%' AND $extensions"; |
| 382 |
} else { |
| 383 |
$query[ $key ] = "AND ( $alias_2.meta_value IS NULL OR $alias_1.meta_value IS NULL OR $alias_1.meta_value LIKE '%://%' OR $alias_1.meta_value LIKE '_:\\\\\%' AND $extensions )"; |
| 384 |
} |
| 385 |
|
| 386 |
return $prepared ? str_replace( '%', '%%', $query[ $key ] ) : $query[ $key ]; |
| 387 |
} |
| 388 |
|
| 389 |
/** |
| 390 |
* Get the SQL part to be used in a WHERE clause, to get only attachments that have (in)valid '_wp_attached_file' and '_wp_attachment_metadata' metadatas. |
| 391 |
* It returns an empty string if the database has no attachments without the required metadada. |
| 392 |
* |
| 393 |
* @param array $args { |
| 394 |
* Optional. An array of arguments. |
| 395 |
* |
| 396 |
* string $aliases The aliases to use for the meta values. |
| 397 |
* bool $matching Set to false to get a query to fetch invalid metas. |
| 398 |
* bool $test Test if the site has attachments without required metadata before returning the query. False to bypass the test and get the query anyway. |
| 399 |
* bool $prepared Set to true if the query will be prepared with using $wpdb->prepare(). |
| 400 |
* }. |
| 401 |
* @return string A query. |
| 402 |
*/ |
| 403 |
public static function get_required_exist_wp_metadata_where_clause( $args = [] ) { |
| 404 |
static $query = []; |
| 405 |
|
| 406 |
$args = imagify_merge_intersect( |
| 407 |
$args, |
| 408 |
[ |
| 409 |
'aliases' => [], |
| 410 |
'matching' => true, |
| 411 |
'test' => true, |
| 412 |
'prepared' => false, |
| 413 |
] |
| 414 |
); |
| 415 |
|
| 416 |
list( $aliases, $matching, $test, $prepared ) = array_values( $args ); |
| 417 |
|
| 418 |
if ( $test && ! imagify_has_attachments_without_required_metadata() ) { |
| 419 |
return ''; |
| 420 |
} |
| 421 |
|
| 422 |
if ( $aliases && is_string( $aliases ) ) { |
| 423 |
$aliases = [ |
| 424 |
'_wp_attached_file' => $aliases, |
| 425 |
]; |
| 426 |
} elseif ( ! is_array( $aliases ) ) { |
| 427 |
$aliases = []; |
| 428 |
} |
| 429 |
|
| 430 |
$aliases = imagify_merge_intersect( $aliases, self::get_required_wp_metadata_aliases() ); |
| 431 |
$key = implode( '|', $aliases ) . '|' . (int) $matching; |
| 432 |
|
| 433 |
if ( isset( $query[ $key ] ) ) { |
| 434 |
return $prepared ? str_replace( '%', '%%', $query[ $key ] ) : $query[ $key ]; |
| 435 |
} |
| 436 |
|
| 437 |
unset( $args['prepared'] ); |
| 438 |
$alias_1 = $aliases['_wp_attached_file']; |
| 439 |
$extensions = self::get_extensions_where_clause( $args ); |
| 440 |
|
| 441 |
if ( $matching ) { |
| 442 |
$query[ $key ] = "AND $alias_1.meta_value NOT LIKE '%://%' AND $alias_1.meta_value NOT LIKE '_:\\\\\%' OR NOT ( $extensions )"; |
| 443 |
} else { |
| 444 |
$query[ $key ] = "AND ( $alias_1.meta_value LIKE '%://%' OR $alias_1.meta_value LIKE '_:\\\\\%' OR NOT ( $extensions ) )"; |
| 445 |
} |
| 446 |
|
| 447 |
return $prepared ? str_replace( '%', '%%', $query[ $key ] ) : $query[ $key ]; |
| 448 |
} |
| 449 |
|
| 450 |
/** |
| 451 |
* Prepare query arguments. |
| 452 |
* |
| 453 |
* @param array $args { |
| 454 |
* Optional. An array of arguments. |
| 455 |
* |
| 456 |
* string $aliases The aliases to use for the meta values. |
| 457 |
* bool $matching Set to false to get a query to fetch invalid metas. |
| 458 |
* bool $test Test if the site has attachments without required metadata before returning the query. False to bypass the test and get the query anyway. |
| 459 |
* bool $prepared Set to true if the query will be prepared with using $wpdb->prepare(). |
| 460 |
* }. |
| 461 |
* |
| 462 |
* @return array |
| 463 |
*/ |
| 464 |
private function prepare_query_args( $args ) { |
| 465 |
return imagify_merge_intersect( |
| 466 |
$args, |
| 467 |
[ |
| 468 |
'aliases' => [], |
| 469 |
'matching' => true, |
| 470 |
'test' => true, |
| 471 |
'prepared' => false, |
| 472 |
] |
| 473 |
); |
| 474 |
} |
| 475 |
|
| 476 |
/** |
| 477 |
* Generate query. |
| 478 |
* |
| 479 |
* @param bool $matching Matching. |
| 480 |
* @param string $alias Query alias. |
| 481 |
* @param string $regex Query Regex. |
| 482 |
* |
| 483 |
* @return string |
| 484 |
*/ |
| 485 |
private function generate_query( $matching, $alias, $regex ) { |
| 486 |
if ( $matching ) { |
| 487 |
return "REVERSE (LOWER( $alias.meta_value )) REGEXP '$regex'"; |
| 488 |
} |
| 489 |
|
| 490 |
return "REVERSE (LOWER( $alias.meta_value )) NOT REGEXP '$regex'"; |
| 491 |
} |
| 492 |
|
| 493 |
/** |
| 494 |
* Get the SQL part to be used in a WHERE clause, to get only attachments that have a valid file extensions. |
| 495 |
* It returns an empty string if the database has no attachments without the required metadada. |
| 496 |
* |
| 497 |
* @since 1.7 |
| 498 |
* @since 1.7.1.2 Use a single $arg parameter instead of 3. New $prepared parameter. |
| 499 |
* @access public |
| 500 |
* @author Grégory Viguier |
| 501 |
* |
| 502 |
* @param array $args { |
| 503 |
* Optional. An array of arguments. |
| 504 |
* |
| 505 |
* string $alias The alias to use for the meta value. |
| 506 |
* bool $matching Set to false to get a query to fetch metas NOT matching the file extensions. |
| 507 |
* bool $test Test if the site has attachments without required metadata before returning the query. False to bypass the test and get the query anyway. |
| 508 |
* bool $prepared Set to true if the query will be prepared with using $wpdb->prepare(). |
| 509 |
* }. |
| 510 |
* @return string A query. |
| 511 |
*/ |
| 512 |
public static function get_extensions_where_clause( $args = false ) { |
| 513 |
static $extensions; |
| 514 |
static $query = []; |
| 515 |
|
| 516 |
$instance = new self(); |
| 517 |
|
| 518 |
$args = $instance->prepare_query_args( $args ); |
| 519 |
|
| 520 |
list( $alias, $matching, $test, $prepared ) = array_values( $args ); |
| 521 |
|
| 522 |
if ( $test && ! imagify_has_attachments_without_required_metadata() ) { |
| 523 |
return ''; |
| 524 |
} |
| 525 |
|
| 526 |
if ( ! isset( $extensions ) ) { |
| 527 |
$extensions = array_keys( imagify_get_mime_types() ); |
| 528 |
$extensions = implode( '|', $extensions ); |
| 529 |
$extensions = explode( '|', $extensions ); |
| 530 |
$extensions = array_map( |
| 531 |
function ( $ex ) { |
| 532 |
return strrev( $ex ); |
| 533 |
}, |
| 534 |
$extensions |
| 535 |
); |
| 536 |
} |
| 537 |
|
| 538 |
if ( ! $alias ) { |
| 539 |
$alias = self::get_required_wp_metadata_aliases(); |
| 540 |
$alias = $alias['_wp_attached_file']; |
| 541 |
} |
| 542 |
|
| 543 |
$key = $alias . '|' . (int) $matching; |
| 544 |
|
| 545 |
if ( isset( $query[ $key ] ) ) { |
| 546 |
return $prepared ? str_replace( '%', '%%', $query[ $key ] ) : $query[ $key ]; |
| 547 |
} |
| 548 |
|
| 549 |
$regex = '^' . implode( '\..*|^', $extensions ) . '\..*'; |
| 550 |
|
| 551 |
$query[ $key ] = $instance->generate_query( $matching, $alias, $regex ); |
| 552 |
|
| 553 |
return $prepared ? str_replace( '%', '%%', $query[ $key ] ) : $query[ $key ]; |
| 554 |
} |
| 555 |
|
| 556 |
/** |
| 557 |
* Get the aliases used for the metas in self::get_required_wp_metadata_join_clause(), self::get_required_wp_metadata_where_clause(), and self::get_extensions_where_clause(). |
| 558 |
* |
| 559 |
* @since 1.7 |
| 560 |
* @access public |
| 561 |
* @author Grégory Viguier |
| 562 |
* |
| 563 |
* @return array An array with the meta name as key and its alias as value. |
| 564 |
*/ |
| 565 |
public static function get_required_wp_metadata_aliases() { |
| 566 |
return [ |
| 567 |
'_wp_attached_file' => 'imrwpmt1', |
| 568 |
'_wp_attachment_metadata' => 'imrwpmt2', |
| 569 |
]; |
| 570 |
} |
| 571 |
|
| 572 |
/** |
| 573 |
* Combine two arrays with some specific keys. |
| 574 |
* We use this function to combine the result of 2 SQL queries. |
| 575 |
* |
| 576 |
* @since 1.6.13 |
| 577 |
* @access public |
| 578 |
* @author Grégory Viguier |
| 579 |
* |
| 580 |
* @param array $keys An array of keys. |
| 581 |
* @param array $values An array of arrays like array( 'id' => id, 'value' => value ). |
| 582 |
* @param int $keep_keys_order Set to true to return an array ordered like $keys instead of $values. |
| 583 |
* @return array The combined arrays. |
| 584 |
*/ |
| 585 |
public static function combine_query_results( $keys, $values, $keep_keys_order = false ) { |
| 586 |
if ( ! $keys || ! $values ) { |
| 587 |
return []; |
| 588 |
} |
| 589 |
|
| 590 |
$result = []; |
| 591 |
$keys = array_flip( $keys ); |
| 592 |
|
| 593 |
foreach ( $values as $v ) { |
| 594 |
if ( isset( $keys[ $v['id'] ] ) ) { |
| 595 |
$result[ $v['id'] ] = $v['value']; |
| 596 |
} |
| 597 |
} |
| 598 |
|
| 599 |
if ( $keep_keys_order ) { |
| 600 |
$keys = array_intersect_key( $keys, $result ); |
| 601 |
return array_replace( $keys, $result ); |
| 602 |
} |
| 603 |
|
| 604 |
return $result; |
| 605 |
} |
| 606 |
|
| 607 |
/** |
| 608 |
* A helper to retrieve all values from one or several post metas, given a list of post IDs. |
| 609 |
* The $wpdb cache is flushed to save memory. |
| 610 |
* |
| 611 |
* @since 1.6.13 |
| 612 |
* @access public |
| 613 |
* @author Grégory Viguier |
| 614 |
* |
| 615 |
* @param array $metas An array of meta names like: |
| 616 |
* array( |
| 617 |
* 'key1' => 'meta_name_1', |
| 618 |
* 'key2' => 'meta_name_2', |
| 619 |
* 'key3' => 'meta_name_3', |
| 620 |
* ) |
| 621 |
* If a key contains 'data', the results will be unserialized. |
| 622 |
* @param array $ids An array of post IDs. |
| 623 |
* @return array An array of arrays of results like: |
| 624 |
* array( |
| 625 |
* 'key1' => array( post_id_1 => 'result_1', post_id_2 => 'result_2', post_id_3 => 'result_3' ), |
| 626 |
* 'key2' => array( post_id_1 => 'result_4', post_id_3 => 'result_5' ), |
| 627 |
* 'key3' => array( post_id_1 => 'result_6', post_id_2 => 'result_7' ), |
| 628 |
* ) |
| 629 |
*/ |
| 630 |
public static function get_metas( $metas, $ids ) { |
| 631 |
global $wpdb; |
| 632 |
|
| 633 |
if ( ! $ids ) { |
| 634 |
return array_fill_keys( array_keys( $metas ), [] ); |
| 635 |
} |
| 636 |
|
| 637 |
$sql_ids = implode( ',', $ids ); |
| 638 |
|
| 639 |
foreach ( $metas as $result_name => $meta_name ) { |
| 640 |
$metas[ $result_name ] = $wpdb->get_results( // WPCS: unprepared SQL ok. |
| 641 |
"SELECT pm.post_id as id, pm.meta_value as value |
| 642 |
FROM $wpdb->postmeta as pm |
| 643 |
WHERE pm.meta_key = '$meta_name' |
| 644 |
AND pm.post_id IN ( $sql_ids ) |
| 645 |
ORDER BY pm.post_id DESC", |
| 646 |
ARRAY_A |
| 647 |
); |
| 648 |
|
| 649 |
$wpdb->flush(); |
| 650 |
$metas[ $result_name ] = self::combine_query_results( $ids, $metas[ $result_name ], true ); |
| 651 |
|
| 652 |
if ( strpos( $result_name, 'data' ) !== false ) { |
| 653 |
$metas[ $result_name ] = array_map( 'maybe_unserialize', $metas[ $result_name ] ); |
| 654 |
} |
| 655 |
} |
| 656 |
|
| 657 |
return $metas; |
| 658 |
} |
| 659 |
|
| 660 |
/** |
| 661 |
* Create/Upgrade the table in the database. |
| 662 |
* |
| 663 |
* @since 1.7 |
| 664 |
* @access public |
| 665 |
* @author Grégory Viguier |
| 666 |
* |
| 667 |
* @param string $table_name The (prefixed) table name. |
| 668 |
* @param string $schema_query Query representing the table schema. |
| 669 |
* @return bool True on success. False otherwise. |
| 670 |
*/ |
| 671 |
public static function create_table( $table_name, $schema_query ) { |
| 672 |
global $wpdb; |
| 673 |
|
| 674 |
require_once ABSPATH . 'wp-admin/includes/upgrade.php'; |
| 675 |
|
| 676 |
$wpdb->hide_errors(); |
| 677 |
|
| 678 |
$schema_query = trim( $schema_query ); |
| 679 |
$charset_collate = $wpdb->get_charset_collate(); |
| 680 |
|
| 681 |
dbDelta( "CREATE TABLE $table_name ($schema_query) $charset_collate;" ); |
| 682 |
|
| 683 |
return empty( $wpdb->last_error ) && self::table_exists( $table_name ); |
| 684 |
} |
| 685 |
|
| 686 |
/** |
| 687 |
* Tell if the given table exists. |
| 688 |
* |
| 689 |
* @since 1.7 |
| 690 |
* @access public |
| 691 |
* @author Grégory Viguier |
| 692 |
* |
| 693 |
* @param string $table_name Full name of the table (with DB prefix). |
| 694 |
* @return bool |
| 695 |
*/ |
| 696 |
public static function table_exists( $table_name ) { |
| 697 |
global $wpdb; |
| 698 |
|
| 699 |
$escaped_table = self::esc_like( $table_name ); |
| 700 |
$result = $wpdb->get_var( $wpdb->prepare( 'SHOW TABLES LIKE %s', $escaped_table ) ); |
| 701 |
|
| 702 |
return $result === $table_name; |
| 703 |
} |
| 704 |
|
| 705 |
/** |
| 706 |
* Cache transients used for optimization process locks. |
| 707 |
* |
| 708 |
* @since 1.9 |
| 709 |
* @access public |
| 710 |
* @author Grégory Viguier |
| 711 |
* |
| 712 |
* @param string $context The context. |
| 713 |
* @param array $media_ids The media IDs. |
| 714 |
*/ |
| 715 |
public static function cache_process_locks( $context, $media_ids ) { |
| 716 |
global $wpdb; |
| 717 |
|
| 718 |
if ( ! $context || ! $media_ids || wp_using_ext_object_cache() ) { |
| 719 |
return; |
| 720 |
} |
| 721 |
|
| 722 |
// Sanitize the IDs. |
| 723 |
$media_ids = array_filter( $media_ids ); |
| 724 |
$media_ids = array_unique( $media_ids ); |
| 725 |
|
| 726 |
if ( ! $media_ids ) { |
| 727 |
return; |
| 728 |
} |
| 729 |
|
| 730 |
$context_instance = imagify_get_context( $context ); |
| 731 |
$context = $context_instance->get_name(); |
| 732 |
$process_class_name = imagify_get_optimization_process_class_name( $context ); |
| 733 |
$transient_name = sprintf( $process_class_name::LOCK_NAME, $context, '%' ); |
| 734 |
$is_network_wide = $context_instance->is_network_wide(); |
| 735 |
|
| 736 |
// Do 1 DB query per context (and cache results) before doing 1 get_transient() (2 DB queries) per media ID. |
| 737 |
$prefix = $is_network_wide ? '_site_transient_' : '_transient_'; |
| 738 |
|
| 739 |
if ( $is_network_wide && is_multisite() ) { |
| 740 |
$network_id = function_exists( 'get_current_network_id' ) ? get_current_network_id() : (int) $wpdb->siteid; |
| 741 |
$cache_prefix = "$network_id:"; |
| 742 |
$notoptions_key = "$network_id:notoptions"; |
| 743 |
$cache_group = 'site-options'; |
| 744 |
$results = $wpdb->get_results( |
| 745 |
$wpdb->prepare( |
| 746 |
"SELECT meta_key as name, meta_value as value FROM $wpdb->sitemeta WHERE ( meta_key LIKE %s OR meta_key LIKE %s ) AND site_id = %d", |
| 747 |
$prefix . $transient_name, |
| 748 |
$prefix . 'timeout_' . $transient_name, |
| 749 |
$network_id |
| 750 |
), |
| 751 |
OBJECT_K |
| 752 |
); // WPCS: unprepared SQL ok. |
| 753 |
} else { |
| 754 |
$cache_prefix = ''; |
| 755 |
$notoptions_key = 'notoptions'; |
| 756 |
$cache_group = 'options'; |
| 757 |
$results = $wpdb->get_results( |
| 758 |
$wpdb->prepare( |
| 759 |
"SELECT option_name as name, option_value as value FROM $wpdb->options WHERE ( option_name LIKE %s OR option_name LIKE %s )", |
| 760 |
$prefix . $transient_name, |
| 761 |
$prefix . 'timeout_' . $transient_name |
| 762 |
), |
| 763 |
OBJECT_K |
| 764 |
); // WPCS: unprepared SQL ok. |
| 765 |
} |
| 766 |
|
| 767 |
$not_exist = []; |
| 768 |
|
| 769 |
foreach ( [ '', 'timeout_' ] as $maybe_timeout ) { |
| 770 |
foreach ( $media_ids as $id ) { |
| 771 |
$option_name = $prefix . $maybe_timeout . str_replace( '%', $id, $transient_name ); |
| 772 |
|
| 773 |
if ( isset( $results[ $option_name ] ) ) { |
| 774 |
// Cache the value. |
| 775 |
$value = $results[ $option_name ]->value; |
| 776 |
$value = maybe_unserialize( $value ); |
| 777 |
wp_cache_set( "$cache_prefix$option_name", $value, $cache_group ); |
| 778 |
} else { |
| 779 |
// No value. |
| 780 |
$not_exist[ $option_name ] = true; |
| 781 |
} |
| 782 |
} |
| 783 |
} |
| 784 |
|
| 785 |
if ( ! $not_exist ) { |
| 786 |
return; |
| 787 |
} |
| 788 |
|
| 789 |
// Cache the options that don't exist in the DB. |
| 790 |
$notoptions = wp_cache_get( $notoptions_key, $cache_group ); |
| 791 |
$notoptions = is_array( $notoptions ) ? $notoptions : []; |
| 792 |
$notoptions = array_merge( $notoptions, $not_exist ); |
| 793 |
|
| 794 |
wp_cache_set( $notoptions_key, $notoptions, $cache_group ); |
| 795 |
} |
| 796 |
} |
| 797 |
|
