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2 |
1 | <?php |
2 | /** |
3 | * This file is part of the sshilko/php-sql-mydb package. |
4 | * |
5 | * (c) Sergei Shilko <contact@sshilko.com> |
6 | * |
7 | * MIT License |
8 | * |
9 | * For the full copyright and license information, please view the LICENSE |
10 | * file that was distributed with this source code. |
11 | * @license https://opensource.org/licenses/mit-license.php MIT |
12 | */ |
13 | |
14 | declare(strict_types = 1); |
15 | |
16 | namespace sql; |
17 | |
18 | use mysqli; |
19 | use mysqli_result; |
20 | use sql\MydbMysqli\MydbMysqliResult; |
21 | use function array_merge; |
22 | use function array_values; |
23 | use function in_array; |
24 | use function max; |
25 | use function mysqli_report; |
26 | use function sprintf; |
27 | use const MYSQLI_INIT_COMMAND; |
28 | use const MYSQLI_OPT_CONNECT_TIMEOUT; |
29 | use const MYSQLI_OPT_NET_CMD_BUFFER_SIZE; |
30 | use const MYSQLI_OPT_NET_READ_BUFFER_SIZE; |
31 | use const MYSQLI_OPT_READ_TIMEOUT; |
32 | use const MYSQLI_REPORT_ALL; |
33 | use const MYSQLI_REPORT_INDEX; |
34 | use const MYSQLI_REPORT_STRICT; |
35 | use const MYSQLI_STORE_RESULT_COPY_DATA; |
36 | use const MYSQLI_TRANS_COR_NO_RELEASE; |
37 | use const MYSQLI_TRANS_COR_RELEASE; |
38 | use const MYSQLI_TRANS_START_READ_ONLY; |
39 | use const MYSQLI_TRANS_START_READ_WRITE; |
40 | |
41 | /** |
42 | * Facade for php mysqli extension |
43 | * |
44 | * @author Sergei Shilko <contact@sshilko.com> |
45 | * @license https://opensource.org/licenses/mit-license.php MIT |
46 | * @see https://github.com/sshilko/php-sql-mydb |
47 | * @see https://www.php.net/manual/en/class.mysqli |
48 | */ |
49 | class MydbMysqli implements MydbMysqliInterface |
50 | { |
51 | /** |
52 | * Command to execute when connecting to MySQL server. Will automatically be re-executed when reconnecting. |
53 | * @see https://www.php.net/manual/en/mysqli.constants.php |
54 | */ |
55 | public const MYSQLI_INIT_COMMAND = MYSQLI_INIT_COMMAND; |
56 | |
57 | /** |
58 | * Connect timeout in seconds |
59 | * @see https://www.php.net/manual/en/mysqli.constants.php |
60 | */ |
61 | public const MYSQLI_OPT_CONNECT_TIMEOUT = MYSQLI_OPT_CONNECT_TIMEOUT; |
62 | |
63 | /** |
64 | * The size of the internal command/network buffer. Only valid for mysqlnd. |
65 | * @see https://www.php.net/manual/en/mysqli.constants.php |
66 | */ |
67 | public const MYSQLI_OPT_NET_CMD_BUFFER_SIZE = MYSQLI_OPT_NET_CMD_BUFFER_SIZE; |
68 | |
69 | /** |
70 | * Maximum read chunk size in bytes when reading the body of a MySQL command packet. Only valid for mysqlnd. |
71 | * @see https://www.php.net/manual/en/mysqli.constants.php |
72 | */ |
73 | public const MYSQLI_OPT_NET_READ_BUFFER_SIZE = MYSQLI_OPT_NET_READ_BUFFER_SIZE; |
74 | |
75 | /** |
76 | * Command execution result timeout in seconds. Available as of PHP 7.2.0. |
77 | * @see https://www.php.net/manual/en/mysqli.constants.php |
78 | */ |
79 | public const MYSQLI_OPT_READ_TIMEOUT = MYSQLI_OPT_READ_TIMEOUT; |
80 | |
81 | /** |
82 | * Copy results from the internal mysqlnd buffer into the PHP variables fetched. |
83 | * By default, mysqlnd will use a reference logic to avoid copying and duplicating results |
84 | * held in memory. For certain result sets, for example, result sets with many small rows, |
85 | * the copy approach can reduce the overall memory usage because PHP variables holding |
86 | * results may be released earlier (available with mysqlnd only) |
87 | * @see https://www.php.net/manual/en/mysqli.constants.php |
88 | */ |
89 | public const MYSQLI_STORE_RESULT_COPY_DATA = MYSQLI_STORE_RESULT_COPY_DATA; |
90 | |
91 | /** |
92 | * Appends "RELEASE" to mysqli_commit() or mysqli_rollback(). |
93 | * The RELEASE clause causes the server to disconnect the current client session |
94 | * after terminating the current transaction |
95 | * |
96 | * @see https://dev.mysql.com/doc/refman/8.0/en/commit.html |
97 | * @see https://www.php.net/manual/en/mysqli.constants.php |
98 | */ |
99 | public const MYSQLI_TRANS_COR_RELEASE = MYSQLI_TRANS_COR_RELEASE; |
100 | |
101 | /** |
102 | * Start the transaction as "START TRANSACTION READ ONLY" with mysqli_begin_transaction(). |
103 | * |
104 | * @see https://www.php.net/manual/en/mysqli.constants.php |
105 | */ |
106 | public const MYSQLI_TRANS_START_READ_ONLY = MYSQLI_TRANS_START_READ_ONLY; |
107 | |
108 | /** |
109 | * Start the transaction as "START TRANSACTION READ WRITE" with mysqli_begin_transaction(). |
110 | * @see https://www.php.net/manual/en/mysqli.constants.php |
111 | */ |
112 | public const MYSQLI_TRANS_START_READ_WRITE = MYSQLI_TRANS_START_READ_WRITE; |
113 | |
114 | /** |
115 | * Appends "NO RELEASE" to mysqli_commit() or mysqli_rollback(). |
116 | * The NO RELEASE clause asks the server to not disconnect the current client session |
117 | * after terminating the current transaction |
118 | * |
119 | * @see https://dev.mysql.com/doc/refman/8.0/en/commit.html |
120 | * @see https://www.php.net/manual/en/mysqli.constants.php |
121 | */ |
122 | public const MYSQLI_TRANS_COR_NO_RELEASE = MYSQLI_TRANS_COR_NO_RELEASE; |
123 | |
124 | /** |
125 | * Set all options on (report all), report all warnings/errors. |
126 | * |
127 | * @see https://www.php.net/manual/en/mysqli.constants.php |
128 | */ |
129 | public const MYSQLI_REPORT_ALL = MYSQLI_REPORT_ALL; |
130 | |
131 | /** |
132 | * Report if no index or bad index was used in a query. |
133 | * |
134 | * @see https://www.php.net/manual/en/mysqli.constants.php |
135 | */ |
136 | public const MYSQLI_REPORT_INDEX = MYSQLI_REPORT_INDEX; |
137 | |
138 | /** |
139 | * Throw a mysqli_sql_exception for errors instead of warnings. |
140 | * |
141 | * @see https://www.php.net/manual/en/mysqli.constants.php |
142 | */ |
143 | public const MYSQLI_REPORT_STRICT = MYSQLI_REPORT_STRICT; |
144 | |
145 | /** |
146 | * Safe MySQL SQL_MODE |
147 | * @see https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html#sqlmode_traditional |
148 | */ |
149 | protected const SQL_MODE = 'TRADITIONAL'; |
150 | |
151 | /** |
152 | * Mysqli instance |
153 | * The mysqli extension allows you to access the functionality provided by MySQL 4.1 and above |
154 | * |
155 | * @see http://dev.mysql.com/doc/ |
156 | * @see https://www.php.net/manual/en/mysqli.overview.php |
157 | * @see https://www.php.net/manual/en/intro.mysqli.php |
158 | * @see https://www.php.net/manual/en/class.mysqli |
159 | */ |
160 | protected ?mysqli $mysqli = null; |
161 | |
162 | /** |
163 | * Flag indicating whether physical connection was established with remote server |
164 | * Is connected to remove server |
165 | */ |
166 | protected bool $isConnected = false; |
167 | |
168 | /** |
169 | * Flag indicating whether SQL transaction was started |
170 | * WARNING: best-effort, only guaranteed when library is used correctly |
171 | * Is transaction started |
172 | */ |
173 | protected bool $isTransaction = false; |
174 | |
175 | public function __construct(?mysqli $resource = null) |
176 | { |
177 | if (!$resource) { |
178 | return; |
179 | } |
180 | |
181 | $this->mysqli = $resource; |
182 | } |
183 | |
184 | /** |
185 | * Allocate mysqli resource instance, no physical connection to remote is done |
186 | * |
187 | */ |
188 | public function init(): bool |
189 | { |
190 | if (null !== $this->mysqli) { |
191 | /** |
192 | * Prevent zombie connections |
193 | */ |
194 | return false; |
195 | } |
196 | |
197 | /** |
198 | * @see https://php.net/manual/en/mysqli.construct.php |
199 | * @see https://wiki.php.net/rfc/improve_mysqli |
200 | */ |
201 | $init = new mysqli(); |
202 | $this->mysqli = $init; |
203 | |
204 | return true; |
205 | } |
206 | |
207 | /** |
208 | * Set various options that affect mysqli resource, before connection is established |
209 | * |
210 | * @see https://www.php.net/manual/en/mysqli.options.php |
211 | * @throws \sql\MydbException\EnvironmentException |
212 | */ |
213 | public function setTransportOptions(MydbOptionsInterface $options, MydbEnvironmentInterface $environment): bool |
214 | { |
215 | if (null === $this->mysqli) { |
216 | return false; |
217 | } |
218 | |
219 | $ignoreUserAbort = $environment->ignore_user_abort(); |
220 | $selectTimeout = $options->getServerSideSelectTimeout(); |
221 | |
222 | /** |
223 | * Prevent entry of invalid values such as those that are out of range, or NULL specified for NOT NULL columns |
224 | * TRADITIONAL = strict mode |
225 | * |
226 | * @see https://dev.mysql.com/doc/refman/5.7/en/sql-mode.html#sqlmode_traditional |
227 | */ |
228 | $mysqliInit = sprintf('SET SESSION sql_mode = %s', self::SQL_MODE); |
229 | if ($ignoreUserAbort < 1) { |
230 | $mysqliInit .= sprintf(', SESSION max_execution_time = %s', $selectTimeout * 10000); |
231 | } |
232 | |
233 | $connectTimeout = $options->getConnectTimeout(); |
234 | $readTimeout = $options->getReadTimeout(); |
235 | $netReadTimeout = (string) (max($selectTimeout, $readTimeout) + $connectTimeout); |
236 | |
237 | return |
238 | $environment->setMysqlndNetReadTimeout($netReadTimeout) && |
239 | $this->mysqli->options(self::MYSQLI_INIT_COMMAND, $mysqliInit) && |
240 | $this->mysqli->options(self::MYSQLI_OPT_CONNECT_TIMEOUT, $connectTimeout) && |
241 | $this->mysqli->options(self::MYSQLI_OPT_READ_TIMEOUT, $readTimeout) && |
242 | $this->mysqli->options(self::MYSQLI_OPT_NET_CMD_BUFFER_SIZE, $options->getNetworkBufferSize()) && |
243 | $this->mysqli->options(self::MYSQLI_OPT_NET_READ_BUFFER_SIZE, $options->getNetworkReadBuffer()); |
244 | } |
245 | |
246 | public function setTransactionIsolationLevel(string $level): bool |
247 | { |
248 | /** |
249 | * SESSION is explicitly required, |
250 | * otherwise 'The statement applies only to the next single transaction performed within the session' |
251 | * |
252 | * @see https://dev.mysql.com/doc/refman/8.0/en/set-transaction.html |
253 | */ |
254 | return $this->realQuery(sprintf('SET SESSION TRANSACTION ISOLATION LEVEL %s', $level)); |
255 | } |
256 | |
257 | public function isTransactionOpen(): bool |
258 | { |
259 | /** |
260 | * Ignore autocommit setting here |
261 | */ |
262 | return $this->isTransaction; |
263 | } |
264 | |
265 | public function isConnected(): bool |
266 | { |
267 | return $this->mysqli && $this->isConnected; |
268 | } |
269 | |
270 | public function getMysqli(): ?mysqli |
271 | { |
272 | return $this->mysqli; |
273 | } |
274 | |
275 | /** |
276 | * @see https://www.php.net/manual/en/mysqli.real-query.php |
277 | */ |
278 | public function realQuery(string $query): bool |
279 | { |
280 | if ($this->mysqli && $this->isConnected()) { |
281 | return $this->mysqli->real_query($query); |
282 | } |
283 | |
284 | return false; |
285 | } |
286 | |
287 | /** |
288 | * React to mysqli resource changes after query/command execution |
289 | */ |
290 | public function readServerResponse(MydbEnvironmentInterface $environment): ?MydbMysqliResult |
291 | { |
292 | if ($this->mysqli && $this->isConnected()) { |
293 | $events = []; |
294 | |
295 | $warnings = []; |
296 | |
297 | $result = $this->extractServerResponse($environment, $events); |
298 | |
299 | $fieldsCount = $this->getFieldCount(); |
300 | |
301 | if ($this->getWarningCount() > 0) { |
302 | $warnings = array_merge($warnings, $this->getWarnings()); |
303 | } |
304 | if ($events) { |
305 | $warnings = array_merge($warnings, array_values($events)); |
306 | } |
307 | |
308 | /** @var array<array-key, string> $warnings */ |
309 | $response = new MydbMysqliResult($result, $warnings, $fieldsCount ?? 0); |
310 | |
311 | $error = $this->getError(); |
312 | if (null !== $error && '' !== $error) { |
313 | $response->setErrorMessage($error); |
314 | } |
315 | |
316 | $errno = $this->getErrNo(); |
317 | if ($errno > 0) { |
318 | $response->setErrorNumber($errno); |
319 | } |
320 | |
321 | return $response; |
322 | } |
323 | |
324 | return null; |
325 | } |
326 | |
327 | /** |
328 | * @see https://www.php.net/manual/en/mysqli.real-escape-string.php |
329 | */ |
330 | public function realEscapeString(string $string): ?string |
331 | { |
332 | if (!$this->mysqli || !$this->isConnected()) { |
333 | return null; |
334 | } |
335 | |
336 | return $this->mysqli->real_escape_string($string); |
337 | } |
338 | |
339 | /** |
340 | * @see https://www.php.net/manual/en/mysqli.begin-transaction.php |
341 | */ |
342 | public function beginTransactionReadwrite(): bool |
343 | { |
344 | if ($this->mysqli && |
345 | $this->isConnected() && |
346 | $this->mysqli->begin_transaction(self::MYSQLI_TRANS_START_READ_WRITE)) { |
347 | $this->isTransaction = true; |
348 | |
349 | return true; |
350 | } |
351 | |
352 | return false; |
353 | } |
354 | |
355 | /** |
356 | * @see https://www.php.net/manual/en/mysqli.begin-transaction.php |
357 | */ |
358 | public function beginTransactionReadonly(): bool |
359 | { |
360 | if ($this->mysqli && |
361 | $this->isConnected() && |
362 | $this->mysqli->begin_transaction(self::MYSQLI_TRANS_START_READ_ONLY)) { |
363 | $this->isTransaction = true; |
364 | |
365 | return true; |
366 | } |
367 | |
368 | return false; |
369 | } |
370 | |
371 | /** |
372 | * @see https://www.php.net/manual/en/mysqli.rollback.php |
373 | */ |
374 | public function rollback(): bool |
375 | { |
376 | /** |
377 | * ignore isTransaction state, do not rely on it, instead do what user requested |
378 | */ |
379 | if ($this->mysqli && $this->isConnected() && $this->mysqli->rollback(self::MYSQLI_TRANS_COR_NO_RELEASE)) { |
380 | $this->isTransaction = false; |
381 | |
382 | return true; |
383 | } |
384 | |
385 | return false; |
386 | } |
387 | |
388 | /** |
389 | * Commit transaction and release connection from server side |
390 | */ |
391 | public function commitAndRelease(): bool |
392 | { |
393 | if ($this->mysqli && $this->isConnected() && $this->mysqli->commit(self::MYSQLI_TRANS_COR_RELEASE)) { |
394 | $this->isTransaction = false; |
395 | |
396 | return true; |
397 | } |
398 | |
399 | return false; |
400 | } |
401 | |
402 | public function commit(): bool |
403 | { |
404 | if ($this->mysqli && $this->isConnected() && $this->mysqli->commit(self::MYSQLI_TRANS_COR_NO_RELEASE)) { |
405 | $this->isTransaction = false; |
406 | |
407 | return true; |
408 | } |
409 | |
410 | return false; |
411 | } |
412 | |
413 | public function realConnect( |
414 | string $host, |
415 | string $username, |
416 | string $password, |
417 | string $dbname, |
418 | ?int $port, |
419 | ?string $socket, |
420 | int $flags, |
421 | ): bool { |
422 | if ($this->mysqli && !$this->isConnected() && $this->mysqli->real_connect( |
423 | $host, |
424 | $username, |
425 | $password, |
426 | $dbname, |
427 | (int) $port, |
428 | (string) $socket, |
429 | $flags |
430 | )) { |
431 | $this->isConnected = true; |
432 | |
433 | return true; |
434 | } |
435 | |
436 | return false; |
437 | } |
438 | |
439 | public function mysqliReport(int $level): bool |
440 | { |
441 | return mysqli_report($level); |
442 | } |
443 | |
444 | public function close(): bool |
445 | { |
446 | if ($this->mysqli) { |
447 | if ($this->isConnected()) { |
448 | /** |
449 | * Ignore close() success/failure |
450 | */ |
451 | $this->mysqli->close(); |
452 | $this->isConnected = false; |
453 | } |
454 | |
455 | $this->mysqli = null; |
456 | |
457 | return true; |
458 | } |
459 | |
460 | return false; |
461 | } |
462 | |
463 | public function getConnectErrno(): ?int |
464 | { |
465 | return $this->mysqli |
466 | ? $this->mysqli->connect_errno |
467 | : null; |
468 | } |
469 | |
470 | public function getConnectError(): ?string |
471 | { |
472 | return $this->mysqli |
473 | ? $this->mysqli->connect_error |
474 | : null; |
475 | } |
476 | |
477 | public function isServerGone(): bool |
478 | { |
479 | return in_array($this->getErrNo(), [2002, 2006], true); |
480 | } |
481 | |
482 | public function getError(): ?string |
483 | { |
484 | return $this->mysqli |
485 | ? $this->mysqli->error |
486 | : null; |
487 | } |
488 | |
489 | public function getErrNo(): ?int |
490 | { |
491 | return $this->mysqli |
492 | ? $this->mysqli->errno |
493 | : null; |
494 | } |
495 | |
496 | public function getAffectedRows(): ?int |
497 | { |
498 | $rows = $this->mysqli |
499 | ? (int) $this->mysqli->affected_rows |
500 | : null; |
501 | if (0 === $rows || $rows > 0) { |
502 | return $rows; |
503 | } |
504 | |
505 | /** |
506 | * mysqli_affected_rows |
507 | * An integer greater than zero indicates the number of rows affected or retrieved. |
508 | * Zero indicates that no records where updated for an UPDATE statement, |
509 | * no rows matched the WHERE clause in the query or that no query has yet been executed. |
510 | * -1 indicates that the query returned an error. |
511 | */ |
512 | return null; |
513 | } |
514 | |
515 | /** |
516 | * @phpcs:disable SlevomatCodingStandard.TypeHints.ReturnTypeHint.MissingNativeTypeHint |
517 | */ |
518 | public function getInsertId(): int|string|null |
519 | { |
520 | return $this->mysqli |
521 | ? $this->mysqli->insert_id |
522 | : null; |
523 | } |
524 | |
525 | public function autocommit(bool $enable): bool |
526 | { |
527 | if ($this->mysqli && $this->mysqli->autocommit($enable)) { |
528 | if ($enable) { |
529 | /** |
530 | * Some statement implicitly commit transaction |
531 | * @see https://dev.mysql.com/doc/refman/8.0/en/implicit-commit.html |
532 | */ |
533 | $this->isTransaction = false; |
534 | } |
535 | |
536 | return true; |
537 | } |
538 | |
539 | return false; |
540 | } |
541 | |
542 | /** |
543 | * @phpcs:disable SlevomatCodingStandard.PHP.DisallowReference.DisallowedPassingByReference |
544 | * @param array<int, string> $events |
545 | */ |
546 | public function extractServerResponse(MydbEnvironmentInterface $environment, array &$events): ?mysqli_result |
547 | { |
548 | if (null === $this->mysqli) { |
549 | return null; |
550 | } |
551 | |
552 | /** |
553 | * @psalm-suppress UnusedClosureParam |
554 | */ |
555 | $environment->set_error_handler(static function (int $errno, string $error) use (&$events) { |
556 | $events[$errno] = $error; |
557 | |
558 | return true; |
559 | }); |
560 | |
561 | $result = $this->mysqli->store_result(self::MYSQLI_STORE_RESULT_COPY_DATA); |
562 | $environment->restore_error_handler(); |
563 | |
564 | if (false === $result) { |
565 | return null; |
566 | } |
567 | |
568 | return $result; |
569 | } |
570 | |
571 | public function getWarnings(): array |
572 | { |
573 | if ($this->mysqli) { |
574 | $warnings = $this->mysqli->get_warnings(); |
575 | $array = []; |
576 | do { |
577 | $array[] = $warnings->message; |
578 | } while ($warnings->next()); |
579 | |
580 | return $array; |
581 | } |
582 | |
583 | return []; |
584 | } |
585 | |
586 | /** |
587 | * Returns fields count caused by query execution |
588 | * Requires store_result to be called first |
589 | * @see mysqli::store_result() |
590 | */ |
591 | protected function getFieldCount(): ?int |
592 | { |
593 | return $this->mysqli ? $this->mysqli->field_count : null; |
594 | } |
595 | |
596 | /** |
597 | * Returns warnings caused by query execution |
598 | * Requires store_result to be called first |
599 | * @see mysqli::store_result() |
600 | */ |
601 | protected function getWarningCount(): ?int |
602 | { |
603 | return $this->mysqli |
604 | ? $this->mysqli->warning_count |
605 | : null; |
606 | } |
607 | } |