Commit | Line | Data |
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d7dea16c EM |
1 | <?php |
2 | ||
3 | namespace Civi\Install; | |
4 | ||
5 | /** | |
6 | * Class Requirements | |
7 | * @package Civi\Install | |
8 | */ | |
9 | class Requirements { | |
10 | ||
11 | /** | |
12 | * Requirement severity -- Requirement successfully met. | |
13 | */ | |
14 | const REQUIREMENT_OK = 0; | |
15 | ||
16 | /** | |
17 | * Requirement severity -- Warning condition; proceed but flag warning. | |
18 | */ | |
19 | const REQUIREMENT_WARNING = 1; | |
20 | ||
21 | /** | |
22 | * Requirement severity -- Error condition; abort installation. | |
23 | */ | |
24 | const REQUIREMENT_ERROR = 2; | |
25 | ||
26 | protected $system_checks = array( | |
27 | 'checkMemory', | |
28 | 'checkServerVariables', | |
29 | 'checkMysqlConnectExists', | |
30 | 'checkJsonEncodeExists', | |
9ad2ba41 | 31 | 'checkMultibyteExists', |
d7dea16c EM |
32 | ); |
33 | ||
34 | protected $database_checks = array( | |
35 | 'checkMysqlConnection', | |
36 | 'checkMysqlVersion', | |
37 | 'checkMysqlInnodb', | |
38 | 'checkMysqlTempTables', | |
39 | 'checkMySQLAutoIncrementIncrementOne', | |
40 | 'checkMysqlTrigger', | |
41 | 'checkMysqlThreadStack', | |
42 | 'checkMysqlLockTables', | |
43 | ); | |
44 | ||
45 | /** | |
46 | * Run all requirements tests. | |
47 | * | |
48 | * @param array $config | |
49 | * An array with two keys: | |
50 | * - file_paths | |
51 | * - db_config | |
52 | * | |
a6c01b45 CW |
53 | * @return array |
54 | * An array of check summaries. Each array contains the keys 'title', 'severity', and 'details'. | |
d7dea16c EM |
55 | */ |
56 | public function checkAll(array $config) { | |
57 | return array_merge($this->checkSystem($config['file_paths']), $this->checkDatabase($config['db_config'])); | |
58 | } | |
59 | ||
60 | /** | |
61 | * Check system requirements are met, such as sufficient memory, | |
62 | * necessary file paths are writable and required php extensions | |
63 | * are available. | |
64 | * | |
65 | * @param array $file_paths | |
66 | * An array of file paths that will be checked to confirm they | |
67 | * are writable. | |
68 | * | |
69 | * @return array | |
70 | */ | |
71 | public function checkSystem(array $file_paths) { | |
72 | $errors = array(); | |
73 | ||
74 | $errors[] = $this->checkFilepathIsWritable($file_paths); | |
75 | foreach ($this->system_checks as $check) { | |
76 | $errors[] = $this->$check(); | |
77 | } | |
78 | ||
79 | return $errors; | |
80 | } | |
81 | ||
82 | /** | |
83 | * Check database connection, database version and other | |
84 | * database requirements are met. | |
85 | * | |
86 | * @param array $db_config | |
87 | * An array with keys: | |
88 | * - host (with optional port specified eg. localhost:12345) | |
16b10e64 | 89 | * - database (name of database to select) |
d7dea16c EM |
90 | * - username |
91 | * - password | |
92 | * | |
93 | * @return array | |
94 | */ | |
95 | public function checkDatabase(array $db_config) { | |
96 | $errors = array(); | |
97 | ||
98 | foreach ($this->database_checks as $check) { | |
99 | $errors[] = $this->$check($db_config); | |
100 | } | |
101 | ||
102 | return $errors; | |
103 | } | |
104 | ||
9043c4bf SL |
105 | /** |
106 | * Generates a mysql connection | |
107 | * | |
108 | * @param $db_confic array | |
109 | * @return object mysqli connection | |
110 | */ | |
111 | protected function connect($db_config) { | |
3916ca43 SL |
112 | $host = NULL; |
113 | if (!empty($db_config['host'])) { | |
114 | $host = $db_config['host']; | |
115 | } | |
116 | elseif (!empty($db_config['server'])) { | |
117 | $host = $db_config['server']; | |
118 | } | |
119 | $conn = @mysqli_connect($host, $db_config['username'], $db_config['password'], $db_config['database'], !empty($db_config['port']) ? $db_config['port'] : NULL); | |
120 | return $conn; | |
9043c4bf SL |
121 | } |
122 | ||
d7dea16c | 123 | /** |
fe482240 | 124 | * Check configured php Memory. |
d7dea16c EM |
125 | * @return array |
126 | */ | |
127 | public function checkMemory() { | |
128 | $min = 1024 * 1024 * 32; | |
129 | $recommended = 1024 * 1024 * 64; | |
130 | ||
131 | $mem = $this->getPHPMemory(); | |
132 | $mem_string = ini_get('memory_limit'); | |
133 | ||
134 | $results = array( | |
135 | 'title' => 'CiviCRM memory check', | |
136 | 'severity' => $this::REQUIREMENT_OK, | |
137 | 'details' => "You have $mem_string allocated (minimum 32Mb, recommended 64Mb)", | |
138 | ); | |
139 | ||
140 | if ($mem < $min && $mem > 0) { | |
141 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
142 | } | |
4c9b6178 | 143 | elseif ($mem < $recommended && $mem != 0) { |
d7dea16c EM |
144 | $results['severity'] = $this::REQUIREMENT_WARNING; |
145 | } | |
4c9b6178 | 146 | elseif ($mem == 0) { |
d7dea16c EM |
147 | $results['details'] = "Cannot determine PHP memory allocation. Install only if you're sure you've allocated at least 32 MB."; |
148 | $results['severity'] = $this::REQUIREMENT_WARNING; | |
149 | } | |
150 | ||
151 | return $results; | |
152 | } | |
153 | ||
154 | /** | |
fe482240 | 155 | * Get Configured PHP memory. |
d7dea16c EM |
156 | * @return float |
157 | */ | |
158 | protected function getPHPMemory() { | |
159 | $memString = ini_get("memory_limit"); | |
160 | ||
161 | switch (strtolower(substr($memString, -1))) { | |
162 | case "k": | |
163 | return round(substr($memString, 0, -1) * 1024); | |
ea100cb5 | 164 | |
d7dea16c EM |
165 | case "m": |
166 | return round(substr($memString, 0, -1) * 1024 * 1024); | |
ea100cb5 | 167 | |
d7dea16c EM |
168 | case "g": |
169 | return round(substr($memString, 0, -1) * 1024 * 1024 * 1024); | |
ea100cb5 | 170 | |
d7dea16c EM |
171 | default: |
172 | return round($memString); | |
173 | } | |
174 | } | |
175 | ||
176 | /** | |
177 | * @return array | |
178 | */ | |
00be9182 | 179 | public function checkServerVariables() { |
d7dea16c EM |
180 | $results = array( |
181 | 'title' => 'CiviCRM PHP server variables', | |
182 | 'severity' => $this::REQUIREMENT_OK, | |
183 | 'details' => 'The required $_SERVER variables are set', | |
184 | ); | |
185 | ||
186 | $required_variables = array('SCRIPT_NAME', 'HTTP_HOST', 'SCRIPT_FILENAME'); | |
187 | $missing = array(); | |
188 | ||
189 | foreach ($required_variables as $required_variable) { | |
190 | if (empty($_SERVER[$required_variable])) { | |
191 | $missing[] = '$_SERVER[' . $required_variable . ']'; | |
192 | } | |
193 | } | |
194 | ||
195 | if ($missing) { | |
196 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
197 | $results['details'] = 'The following PHP variables are not set: ' . implode(', ', $missing); | |
198 | } | |
199 | ||
200 | return $results; | |
201 | } | |
202 | ||
203 | /** | |
204 | * @return array | |
205 | */ | |
206 | public function checkJsonEncodeExists() { | |
207 | $results = array( | |
208 | 'title' => 'CiviCRM JSON encoding support', | |
209 | 'severity' => $this::REQUIREMENT_OK, | |
210 | 'details' => 'Function json_encode() found', | |
211 | ); | |
212 | if (!function_exists('json_encode')) { | |
213 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
214 | $results['details'] = 'Function json_encode() does not exist'; | |
215 | } | |
216 | ||
217 | return $results; | |
218 | } | |
219 | ||
9ad2ba41 SL |
220 | /** |
221 | * CHeck that PHP Multibyte functions are enabled. | |
222 | * @return array | |
223 | */ | |
224 | public function checkMultibyteExists() { | |
225 | $results = array( | |
226 | 'title' => 'CiviCRM MultiByte encoding support', | |
227 | 'severity' => $this::REQUIREMENT_OK, | |
228 | 'details' => 'PHP Multibyte etension found', | |
229 | ); | |
230 | if (!function_exists('mb_substr')) { | |
231 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
232 | $results['details'] = 'PHP Multibyte extension has not been installed and enabled'; | |
233 | } | |
234 | ||
235 | return $results; | |
236 | } | |
237 | ||
d7dea16c EM |
238 | /** |
239 | * @return array | |
240 | */ | |
241 | public function checkMysqlConnectExists() { | |
242 | $results = array( | |
243 | 'title' => 'CiviCRM MySQL check', | |
244 | 'severity' => $this::REQUIREMENT_OK, | |
fcf908c6 | 245 | 'details' => 'Function mysqli_connect() found', |
d7dea16c | 246 | ); |
fcf908c6 | 247 | if (!function_exists('mysqli_connect')) { |
d7dea16c | 248 | $results['severity'] = $this::REQUIREMENT_ERROR; |
fcf908c6 | 249 | $results['details'] = 'Function mysqli_connect() does not exist'; |
d7dea16c EM |
250 | } |
251 | ||
252 | return $results; | |
253 | } | |
254 | ||
255 | /** | |
256 | * @param array $db_config | |
257 | * | |
258 | * @return array | |
259 | */ | |
260 | public function checkMysqlConnection(array $db_config) { | |
261 | $results = array( | |
262 | 'title' => 'CiviCRM MySQL connection', | |
263 | 'severity' => $this::REQUIREMENT_OK, | |
264 | 'details' => "Connected", | |
265 | ); | |
266 | ||
9043c4bf | 267 | $conn = $this->connect($db_config); |
d7dea16c EM |
268 | |
269 | if (!$conn) { | |
fcf908c6 | 270 | $results['details'] = mysqli_connect_error(); |
d7dea16c EM |
271 | $results['severity'] = $this::REQUIREMENT_ERROR; |
272 | return $results; | |
273 | } | |
274 | ||
fcf908c6 | 275 | if (!@mysqli_select_db($conn, $db_config['database'])) { |
276 | $results['details'] = mysqli_error($conn); | |
d7dea16c EM |
277 | $results['severity'] = $this::REQUIREMENT_ERROR; |
278 | return $results; | |
279 | } | |
280 | ||
281 | return $results; | |
282 | } | |
283 | ||
284 | /** | |
285 | * @param array $db_config | |
286 | * | |
287 | * @return array | |
288 | */ | |
289 | public function checkMysqlVersion(array $db_config) { | |
290 | $min = '5.1'; | |
291 | $results = array( | |
292 | 'title' => 'CiviCRM MySQL Version', | |
293 | 'severity' => $this::REQUIREMENT_OK, | |
294 | ); | |
295 | ||
9043c4bf | 296 | $conn = $this->connect($db_config); |
fcf908c6 | 297 | if (!$conn || !($info = mysqli_get_server_info($conn))) { |
d7dea16c EM |
298 | $results['severity'] = $this::REQUIREMENT_WARNING; |
299 | $results['details'] = "Cannot determine the version of MySQL installed. Please ensure at least version {$min} is installed."; | |
300 | return $results; | |
301 | } | |
302 | ||
303 | if (version_compare($info, $min) == -1) { | |
304 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
305 | $results['details'] = "MySQL version is {$info}; minimum required is {$min}"; | |
306 | return $results; | |
307 | } | |
308 | ||
309 | $results['details'] = "MySQL version is {$info}"; | |
310 | return $results; | |
311 | } | |
312 | ||
313 | /** | |
314 | * @param array $db_config | |
315 | * | |
316 | * @return array | |
317 | */ | |
318 | public function checkMysqlInnodb(array $db_config) { | |
319 | $results = array( | |
320 | 'title' => 'CiviCRM InnoDB support', | |
321 | 'severity' => $this::REQUIREMENT_ERROR, | |
87a890cc | 322 | 'details' => 'Could not determine if MySQL has InnoDB support. Assuming none.', |
d7dea16c EM |
323 | ); |
324 | ||
9043c4bf | 325 | $conn = $this->connect($db_config); |
d7dea16c EM |
326 | if (!$conn) { |
327 | return $results; | |
328 | } | |
329 | ||
330 | $innodb_support = FALSE; | |
fcf908c6 | 331 | $result = mysqli_query($conn, "SHOW ENGINES"); |
332 | while ($values = mysqli_fetch_array($result)) { | |
d7dea16c EM |
333 | if ($values['Engine'] == 'InnoDB') { |
334 | if (strtolower($values['Support']) == 'yes' || strtolower($values['Support']) == 'default') { | |
335 | $innodb_support = TRUE; | |
336 | break; | |
337 | } | |
338 | } | |
339 | } | |
340 | ||
341 | if ($innodb_support) { | |
342 | $results['severity'] = $this::REQUIREMENT_OK; | |
343 | $results['details'] = 'MySQL supports InnoDB'; | |
344 | } | |
345 | return $results; | |
346 | } | |
347 | ||
348 | /** | |
349 | * @param array $db_config | |
350 | * | |
351 | * @return array | |
352 | */ | |
353 | public function checkMysqlTempTables(array $db_config) { | |
354 | $results = array( | |
355 | 'title' => 'CiviCRM MySQL Temp Tables', | |
356 | 'severity' => $this::REQUIREMENT_OK, | |
357 | 'details' => 'MySQL server supports temporary tables', | |
358 | ); | |
359 | ||
9043c4bf | 360 | $conn = $this->connect($db_config); |
d7dea16c EM |
361 | if (!$conn) { |
362 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
363 | $results['details'] = "Could not connect to database"; | |
364 | return $results; | |
365 | } | |
366 | ||
fcf908c6 | 367 | if (!@mysqli_select_db($conn, $db_config['database'])) { |
d7dea16c EM |
368 | $results['severity'] = $this::REQUIREMENT_ERROR; |
369 | $results['details'] = "Could not select the database"; | |
370 | return $results; | |
371 | } | |
372 | ||
fcf908c6 | 373 | $r = mysqli_query($conn, 'CREATE TEMPORARY TABLE civicrm_install_temp_table_test (test text)'); |
d7dea16c EM |
374 | if (!$r) { |
375 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
376 | $results['details'] = "Database does not support creation of temporary tables"; | |
377 | return $results; | |
378 | } | |
379 | ||
fcf908c6 | 380 | mysqli_query($conn, 'DROP TEMPORARY TABLE civicrm_install_temp_table_test'); |
d7dea16c EM |
381 | return $results; |
382 | } | |
383 | ||
384 | /** | |
385 | * @param $db_config | |
386 | * | |
387 | * @return array | |
388 | */ | |
389 | public function checkMysqlTrigger($db_config) { | |
390 | $results = array( | |
391 | 'title' => 'CiviCRM MySQL Trigger', | |
392 | 'severity' => $this::REQUIREMENT_OK, | |
393 | 'details' => 'Database supports MySQL triggers', | |
394 | ); | |
395 | ||
9043c4bf | 396 | $conn = $this->connect($db_config); |
d7dea16c EM |
397 | if (!$conn) { |
398 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
399 | $results['details'] = 'Could not connect to database'; | |
400 | return $results; | |
401 | } | |
402 | ||
fcf908c6 | 403 | if (!@mysqli_select_db($conn, $db_config['database'])) { |
d7dea16c EM |
404 | $results['severity'] = $this::REQUIREMENT_ERROR; |
405 | $results['details'] = "Could not select the database"; | |
406 | return $results; | |
407 | } | |
408 | ||
fcf908c6 | 409 | $r = mysqli_query($conn, 'CREATE TABLE civicrm_install_temp_table_test (test text)'); |
d7dea16c EM |
410 | if (!$r) { |
411 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
412 | $results['details'] = 'Could not create a table to run test'; | |
413 | return $results; | |
414 | } | |
415 | ||
fcf908c6 | 416 | $r = mysqli_query($conn, 'CREATE TRIGGER civicrm_install_temp_table_test_trigger BEFORE INSERT ON civicrm_install_temp_table_test FOR EACH ROW BEGIN END'); |
d7dea16c EM |
417 | if (!$r) { |
418 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
419 | $results['details'] = 'Database does not support creation of triggers'; | |
420 | } | |
421 | else { | |
fcf908c6 | 422 | mysqli_query($conn, 'DROP TRIGGER civicrm_install_temp_table_test_trigger'); |
d7dea16c EM |
423 | } |
424 | ||
fcf908c6 | 425 | mysqli_query($conn, 'DROP TABLE civicrm_install_temp_table_test'); |
d7dea16c EM |
426 | return $results; |
427 | } | |
428 | ||
429 | /** | |
430 | * @param array $db_config | |
431 | * | |
432 | * @return array | |
433 | */ | |
434 | public function checkMySQLAutoIncrementIncrementOne(array $db_config) { | |
435 | $results = array( | |
436 | 'title' => 'CiviCRM MySQL AutoIncrementIncrement', | |
437 | 'severity' => $this::REQUIREMENT_OK, | |
438 | 'details' => 'MySQL server auto_increment_increment is 1', | |
439 | ); | |
440 | ||
9043c4bf | 441 | $conn = $this->connect($db_config); |
d7dea16c EM |
442 | if (!$conn) { |
443 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
444 | $results['details'] = 'Could not connect to database'; | |
445 | return $results; | |
446 | } | |
447 | ||
fcf908c6 | 448 | $r = mysqli_query($conn, "SHOW variables like 'auto_increment_increment'"); |
d7dea16c EM |
449 | if (!$r) { |
450 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
451 | $results['details'] = 'Could not query database server variables'; | |
452 | return $results; | |
453 | } | |
454 | ||
fcf908c6 | 455 | $values = mysqli_fetch_row($r); |
d7dea16c EM |
456 | if ($values[1] != 1) { |
457 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
458 | $results['details'] = 'MySQL server auto_increment_increment is not 1'; | |
459 | } | |
460 | return $results; | |
461 | } | |
462 | ||
463 | /** | |
464 | * @param $db_config | |
465 | * | |
466 | * @return array | |
467 | */ | |
468 | public function checkMysqlThreadStack($db_config) { | |
469 | $min_thread_stack = 192; | |
470 | ||
471 | $results = array( | |
472 | 'title' => 'CiviCRM Mysql thread stack', | |
473 | 'severity' => $this::REQUIREMENT_OK, | |
474 | 'details' => 'MySQL thread_stack is OK', | |
475 | ); | |
476 | ||
9043c4bf | 477 | $conn = $this->connect($db_config); |
d7dea16c EM |
478 | if (!$conn) { |
479 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
480 | $results['details'] = 'Could not connect to database'; | |
481 | return $results; | |
482 | } | |
483 | ||
fcf908c6 | 484 | if (!@mysqli_select_db($conn, $db_config['database'])) { |
d7dea16c EM |
485 | $results['severity'] = $this::REQUIREMENT_ERROR; |
486 | $results['details'] = 'Could not select the database'; | |
487 | return $results; | |
488 | } | |
489 | ||
fcf908c6 | 490 | $r = mysqli_query($conn, "SHOW VARIABLES LIKE 'thread_stack'"); // bytes => kb |
d7dea16c EM |
491 | if (!$r) { |
492 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
493 | $results['details'] = 'Could not query thread_stack value'; | |
494 | } | |
495 | else { | |
fcf908c6 | 496 | $values = mysqli_fetch_row($r); |
d7dea16c EM |
497 | if ($values[1] < (1024 * $min_thread_stack)) { |
498 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
499 | $results['details'] = 'MySQL thread_stack is ' . ($values[1] / 1024) . "kb (minimum required is {$min_thread_stack} kb"; | |
500 | } | |
501 | } | |
502 | ||
503 | return $results; | |
504 | } | |
505 | ||
506 | /** | |
507 | * @param $db_config | |
508 | * | |
509 | * @return array | |
510 | */ | |
00be9182 | 511 | public function checkMysqlLockTables($db_config) { |
d7dea16c EM |
512 | $results = array( |
513 | 'title' => 'CiviCRM MySQL Lock Tables', | |
514 | 'severity' => $this::REQUIREMENT_OK, | |
515 | 'details' => 'Can successfully lock and unlock tables', | |
516 | ); | |
517 | ||
9043c4bf | 518 | $conn = $this->connect($db_config); |
d7dea16c EM |
519 | if (!$conn) { |
520 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
46bcf597 | 521 | $results['details'] = 'Could not connect to database'; |
d7dea16c EM |
522 | return $results; |
523 | } | |
524 | ||
fcf908c6 | 525 | if (!@mysqli_select_db($conn, $db_config['database'])) { |
d7dea16c EM |
526 | $results['severity'] = $this::REQUIREMENT_ERROR; |
527 | $results['details'] = 'Could not select the database'; | |
fcf908c6 | 528 | mysqli_close($conn); |
d7dea16c EM |
529 | return $results; |
530 | } | |
531 | ||
fcf908c6 | 532 | $r = mysqli_query($conn, 'CREATE TEMPORARY TABLE civicrm_install_temp_table_test (test text)'); |
d7dea16c EM |
533 | if (!$r) { |
534 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
535 | $results['details'] = 'Could not create a table'; | |
fcf908c6 | 536 | mysqli_close($conn); |
d7dea16c EM |
537 | return $results; |
538 | } | |
539 | ||
fcf908c6 | 540 | $r = mysqli_query($conn, 'LOCK TABLES civicrm_install_temp_table_test WRITE'); |
d7dea16c EM |
541 | if (!$r) { |
542 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
543 | $results['details'] = 'Could not obtain a write lock'; | |
fcf908c6 | 544 | mysqli_close($conn); |
d7dea16c EM |
545 | return $results; |
546 | } | |
547 | ||
fcf908c6 | 548 | $r = mysqli_query($conn, 'UNLOCK TABLES'); |
d7dea16c EM |
549 | if (!$r) { |
550 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
551 | $results['details'] = 'Could not release table lock'; | |
552 | } | |
553 | ||
fcf908c6 | 554 | mysqli_close($conn); |
d7dea16c EM |
555 | return $results; |
556 | } | |
557 | ||
558 | /** | |
559 | * @param $file_paths | |
560 | * | |
561 | * @return array | |
562 | */ | |
563 | public function checkFilepathIsWritable($file_paths) { | |
564 | $results = array( | |
565 | 'title' => 'CiviCRM directories are writable', | |
566 | 'severity' => $this::REQUIREMENT_OK, | |
567 | 'details' => 'All required directories are writable: ' . implode(', ', $file_paths), | |
568 | ); | |
569 | ||
570 | $unwritable_dirs = array(); | |
571 | foreach ($file_paths as $path) { | |
572 | if (!is_writable($path)) { | |
573 | $unwritable_dirs[] = $path; | |
574 | } | |
575 | } | |
576 | ||
577 | if ($unwritable_dirs) { | |
578 | $results['severity'] = $this::REQUIREMENT_ERROR; | |
579 | $results['details'] = "The following directories need to be made writable by the webserver: " . implode(', ', $unwritable_dirs); | |
580 | } | |
581 | ||
582 | return $results; | |
583 | } | |
96025800 | 584 | |
d7dea16c | 585 | } |