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1 | <?php |
2 | /* | |
3 | +--------------------------------------------------------------------+ | |
39de6fd5 | 4 | | CiviCRM version 4.6 | |
6a488035 | 5 | +--------------------------------------------------------------------+ |
06b69b18 | 6 | | Copyright CiviCRM LLC (c) 2004-2014 | |
6a488035 TO |
7 | +--------------------------------------------------------------------+ |
8 | | This file is a part of CiviCRM. | | |
9 | | | | |
10 | | CiviCRM is free software; you can copy, modify, and distribute it | | |
11 | | under the terms of the GNU Affero General Public License | | |
12 | | Version 3, 19 November 2007 and the CiviCRM Licensing Exception. | | |
13 | | | | |
14 | | CiviCRM is distributed in the hope that it will be useful, but | | |
15 | | WITHOUT ANY WARRANTY; without even the implied warranty of | | |
16 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | | |
17 | | See the GNU Affero General Public License for more details. | | |
18 | | | | |
19 | | You should have received a copy of the GNU Affero General Public | | |
20 | | License and the CiviCRM Licensing Exception along | | |
21 | | with this program; if not, contact CiviCRM LLC | | |
22 | | at info[AT]civicrm[DOT]org. If you have questions about the | | |
23 | | GNU Affero General Public License or the licensing of CiviCRM, | | |
24 | | see the CiviCRM license FAQ at http://civicrm.org/licensing | | |
25 | +--------------------------------------------------------------------+ | |
26 | */ | |
27 | ||
28 | /** | |
ac302523 | 29 | * Provides a collection of static methods for array manipulation. |
6a488035 TO |
30 | * |
31 | * @package CRM | |
06b69b18 | 32 | * @copyright CiviCRM LLC (c) 2004-2014 |
6a488035 TO |
33 | */ |
34 | class CRM_Utils_Array { | |
35 | ||
36 | /** | |
c9e15d2a RS |
37 | * Returns $list[$key] if such element exists, or a default value otherwise. |
38 | * | |
39 | * If $list is not actually an array at all, then the default value is | |
40 | * returned. | |
6a488035 | 41 | * |
6a488035 | 42 | * |
c9e15d2a RS |
43 | * @param string $key |
44 | * Key value to look up in the array. | |
45 | * @param array $list | |
46 | * Array from which to look up a value. | |
4d63cfde | 47 | * @param mixed $default |
c9e15d2a | 48 | * (optional) Value to return $list[$key] does not exist. |
6a488035 | 49 | * |
c9e15d2a RS |
50 | * @return mixed |
51 | * Can return any type, since $list might contain anything. | |
6a488035 | 52 | */ |
00be9182 | 53 | public static function value($key, $list, $default = NULL) { |
6a488035 TO |
54 | if (is_array($list)) { |
55 | return array_key_exists($key, $list) ? $list[$key] : $default; | |
56 | } | |
57 | return $default; | |
58 | } | |
59 | ||
60 | /** | |
c9e15d2a | 61 | * Recursively searches an array for a key, returning the first value found. |
6a488035 | 62 | * |
c9e15d2a RS |
63 | * If $params[$key] does not exist and $params contains arrays, descend into |
64 | * each array in a depth-first manner, in array iteration order. | |
6a488035 | 65 | * |
c9e15d2a RS |
66 | * @param array $params |
67 | * The array to be searched. | |
68 | * @param string $key | |
69 | * The key to search for. | |
70 | * | |
71 | * @return mixed | |
72 | * The value of the key, or null if the key is not found. | |
6a488035 | 73 | */ |
00be9182 | 74 | public static function retrieveValueRecursive(&$params, $key) { |
6a488035 TO |
75 | if (!is_array($params)) { |
76 | return NULL; | |
77 | } | |
78 | elseif ($value = CRM_Utils_Array::value($key, $params)) { | |
79 | return $value; | |
80 | } | |
81 | else { | |
82 | foreach ($params as $subParam) { | |
83 | if (is_array($subParam) && | |
84 | $value = self::retrieveValueRecursive($subParam, $key) | |
85 | ) { | |
86 | return $value; | |
87 | } | |
88 | } | |
89 | } | |
90 | return NULL; | |
91 | } | |
92 | ||
93 | /** | |
c9e15d2a | 94 | * Wraps and slightly changes the behavior of PHP's array_search(). |
6a488035 | 95 | * |
c9e15d2a RS |
96 | * This function reproduces the behavior of array_search() from PHP prior to |
97 | * version 4.2.0, which was to return NULL on failure. This function also | |
98 | * checks that $list is an array before attempting to search it. | |
6a488035 | 99 | * |
6a488035 | 100 | * |
c9e15d2a RS |
101 | * @param mixed $value |
102 | * The value to search for. | |
103 | * @param array $list | |
104 | * The array to be searched. | |
105 | * | |
106 | * @return int|string|null | |
107 | * Returns the key, which could be an int or a string, or NULL on failure. | |
6a488035 | 108 | */ |
00be9182 | 109 | public static function key($value, &$list) { |
6a488035 TO |
110 | if (is_array($list)) { |
111 | $key = array_search($value, $list); | |
112 | ||
113 | // array_search returns key if found, false otherwise | |
114 | // it may return values like 0 or empty string which | |
115 | // evaluates to false | |
116 | // hence we must use identical comparison operator | |
117 | return ($key === FALSE) ? NULL : $key; | |
118 | } | |
119 | return NULL; | |
120 | } | |
121 | ||
c9e15d2a RS |
122 | /** |
123 | * Builds an XML fragment representing an array. | |
124 | * | |
125 | * Depending on the nature of the keys of the array (and its sub-arrays, | |
126 | * if any) the XML fragment may not be valid. | |
127 | * | |
128 | * @param array $list | |
129 | * The array to be serialized. | |
130 | * @param int $depth | |
131 | * (optional) Indentation depth counter. | |
132 | * @param string $seperator | |
133 | * (optional) String to be appended after open/close tags. | |
134 | * | |
c9e15d2a RS |
135 | * |
136 | * @return string | |
137 | * XML fragment representing $list. | |
138 | */ | |
00be9182 | 139 | public static function &xml(&$list, $depth = 1, $seperator = "\n") { |
6a488035 TO |
140 | $xml = ''; |
141 | foreach ($list as $name => $value) { | |
142 | $xml .= str_repeat(' ', $depth * 4); | |
143 | if (is_array($value)) { | |
144 | $xml .= "<{$name}>{$seperator}"; | |
145 | $xml .= self::xml($value, $depth + 1, $seperator); | |
146 | $xml .= str_repeat(' ', $depth * 4); | |
147 | $xml .= "</{$name}>{$seperator}"; | |
148 | } | |
149 | else { | |
150 | // make sure we escape value | |
151 | $value = self::escapeXML($value); | |
152 | $xml .= "<{$name}>$value</{$name}>{$seperator}"; | |
153 | } | |
154 | } | |
155 | return $xml; | |
156 | } | |
157 | ||
c9e15d2a RS |
158 | /** |
159 | * Sanitizes a string for serialization in CRM_Utils_Array::xml(). | |
160 | * | |
161 | * Replaces '&', '<', and '>' with their XML escape sequences. Replaces '^A' | |
162 | * with a comma. | |
163 | * | |
164 | * @param string $value | |
165 | * String to be sanitized. | |
166 | * | |
167 | * @return string | |
168 | * Sanitized version of $value. | |
169 | */ | |
00be9182 | 170 | public static function escapeXML($value) { |
6a488035 TO |
171 | static $src = NULL; |
172 | static $dst = NULL; | |
173 | ||
174 | if (!$src) { | |
175 | $src = array('&', '<', '>', '\ 1'); | |
176 | $dst = array('&', '<', '>', ','); | |
177 | } | |
178 | ||
179 | return str_replace($src, $dst, $value); | |
180 | } | |
181 | ||
182 | /** | |
c9e15d2a RS |
183 | * Converts a nested array to a flat array. |
184 | * | |
185 | * The nested structure is preserved in the string values of the keys of the | |
186 | * flat array. | |
187 | * | |
188 | * Example nested array: | |
189 | * Array | |
190 | * ( | |
191 | * [foo] => Array | |
192 | * ( | |
193 | * [0] => bar | |
194 | * [1] => baz | |
195 | * [2] => 42 | |
196 | * ) | |
f4aaa82a | 197 | * |
c9e15d2a RS |
198 | * [asdf] => Array |
199 | * ( | |
200 | * [merp] => bleep | |
201 | * [quack] => Array | |
202 | * ( | |
203 | * [0] => 1 | |
204 | * [1] => 2 | |
205 | * [2] => 3 | |
206 | * ) | |
f4aaa82a | 207 | * |
c9e15d2a | 208 | * ) |
f4aaa82a | 209 | * |
c9e15d2a RS |
210 | * [quux] => 999 |
211 | * ) | |
f4aaa82a | 212 | * |
c9e15d2a RS |
213 | * Corresponding flattened array: |
214 | * Array | |
215 | * ( | |
216 | * [foo.0] => bar | |
217 | * [foo.1] => baz | |
218 | * [foo.2] => 42 | |
219 | * [asdf.merp] => bleep | |
220 | * [asdf.quack.0] => 1 | |
221 | * [asdf.quack.1] => 2 | |
222 | * [asdf.quack.2] => 3 | |
223 | * [quux] => 999 | |
224 | * ) | |
225 | * | |
226 | * @param array $list | |
227 | * Array to be flattened. | |
228 | * @param array $flat | |
229 | * Destination array. | |
6a488035 | 230 | * @param string $prefix |
c9e15d2a | 231 | * (optional) String to prepend to keys. |
6a488035 | 232 | * @param string $seperator |
c9e15d2a RS |
233 | * (optional) String that separates the concatenated keys. |
234 | * | |
6a488035 | 235 | */ |
00be9182 | 236 | public static function flatten(&$list, &$flat, $prefix = '', $seperator = ".") { |
6a488035 TO |
237 | foreach ($list as $name => $value) { |
238 | $newPrefix = ($prefix) ? $prefix . $seperator . $name : $name; | |
239 | if (is_array($value)) { | |
240 | self::flatten($value, $flat, $newPrefix, $seperator); | |
241 | } | |
242 | else { | |
243 | if (!empty($value)) { | |
244 | $flat[$newPrefix] = $value; | |
245 | } | |
246 | } | |
247 | } | |
248 | } | |
249 | ||
250 | /** | |
c9e15d2a RS |
251 | * Converts an array with path-like keys into a tree of arrays. |
252 | * | |
253 | * This function is the inverse of CRM_Utils_Array::flatten(). | |
254 | * | |
255 | * @param string $delim | |
256 | * A path delimiter | |
257 | * @param array $arr | |
258 | * A one-dimensional array indexed by string keys | |
6a488035 | 259 | * |
c9e15d2a RS |
260 | * @return array |
261 | * Array-encoded tree | |
6a488035 | 262 | * |
6a488035 | 263 | */ |
00be9182 | 264 | public function unflatten($delim, &$arr) { |
6a488035 TO |
265 | $result = array(); |
266 | foreach ($arr as $key => $value) { | |
267 | $path = explode($delim, $key); | |
268 | $node = &$result; | |
269 | while (count($path) > 1) { | |
270 | $key = array_shift($path); | |
271 | if (!isset($node[$key])) { | |
272 | $node[$key] = array(); | |
273 | } | |
274 | $node = &$node[$key]; | |
275 | } | |
276 | // last part of path | |
277 | $key = array_shift($path); | |
278 | $node[$key] = $value; | |
279 | } | |
280 | return $result; | |
281 | } | |
282 | ||
283 | /** | |
c9e15d2a RS |
284 | * Merges two arrays. |
285 | * | |
286 | * If $a1[foo] and $a2[foo] both exist and are both arrays, the merge | |
287 | * process recurses into those sub-arrays. If $a1[foo] and $a2[foo] both | |
288 | * exist but they are not both arrays, the value from $a1 overrides the | |
289 | * value from $a2 and the value from $a2 is discarded. | |
6a488035 TO |
290 | * |
291 | * @param array $a1 | |
c9e15d2a | 292 | * First array to be merged. |
6a488035 | 293 | * @param array $a2 |
c9e15d2a | 294 | * Second array to be merged. |
6a488035 | 295 | * |
c9e15d2a RS |
296 | * @return array |
297 | * The merged array. | |
6a488035 | 298 | */ |
00be9182 | 299 | public static function crmArrayMerge($a1, $a2) { |
6a488035 TO |
300 | if (empty($a1)) { |
301 | return $a2; | |
302 | } | |
303 | ||
304 | if (empty($a2)) { | |
305 | return $a1; | |
306 | } | |
307 | ||
308 | $a3 = array(); | |
309 | foreach ($a1 as $key => $value) { | |
310 | if (array_key_exists($key, $a2) && | |
311 | is_array($a2[$key]) && is_array($a1[$key]) | |
312 | ) { | |
313 | $a3[$key] = array_merge($a1[$key], $a2[$key]); | |
314 | } | |
315 | else { | |
316 | $a3[$key] = $a1[$key]; | |
317 | } | |
318 | } | |
319 | ||
320 | foreach ($a2 as $key => $value) { | |
321 | if (array_key_exists($key, $a1)) { | |
322 | // already handled in above loop | |
323 | continue; | |
324 | } | |
325 | $a3[$key] = $a2[$key]; | |
326 | } | |
327 | ||
328 | return $a3; | |
329 | } | |
330 | ||
c9e15d2a RS |
331 | /** |
332 | * Determines whether an array contains any sub-arrays. | |
333 | * | |
334 | * @param array $list | |
335 | * The array to inspect. | |
336 | * | |
337 | * @return bool | |
338 | * True if $list contains at least one sub-array, false otherwise. | |
c9e15d2a | 339 | */ |
00be9182 | 340 | public static function isHierarchical(&$list) { |
6a488035 TO |
341 | foreach ($list as $n => $v) { |
342 | if (is_array($v)) { | |
343 | return TRUE; | |
344 | } | |
345 | } | |
346 | return FALSE; | |
347 | } | |
348 | ||
82376c19 TO |
349 | /** |
350 | * @param $subset | |
351 | * @param $superset | |
352 | * @return bool TRUE if $subset is a subset of $superset | |
353 | */ | |
00be9182 | 354 | public static function isSubset($subset, $superset) { |
82376c19 TO |
355 | foreach ($subset as $expected) { |
356 | if (!in_array($expected, $superset)) { | |
357 | return FALSE; | |
358 | } | |
359 | } | |
360 | return TRUE; | |
361 | } | |
362 | ||
6a488035 | 363 | /** |
c9e15d2a | 364 | * Searches an array recursively in an optionally case-insensitive manner. |
6a488035 | 365 | * |
c9e15d2a RS |
366 | * @param string $value |
367 | * Value to search for. | |
368 | * @param array $params | |
369 | * Array to search within. | |
370 | * @param bool $caseInsensitive | |
371 | * (optional) Whether to search in a case-insensitive manner. | |
6a488035 | 372 | * |
c9e15d2a RS |
373 | * @return bool |
374 | * True if $value was found, false otherwise. | |
375 | * | |
6a488035 | 376 | */ |
00be9182 | 377 | public static function crmInArray($value, $params, $caseInsensitive = TRUE) { |
6a488035 TO |
378 | foreach ($params as $item) { |
379 | if (is_array($item)) { | |
380 | $ret = crmInArray($value, $item, $caseInsensitive); | |
381 | } | |
382 | else { | |
383 | $ret = ($caseInsensitive) ? strtolower($item) == strtolower($value) : $item == $value; | |
384 | if ($ret) { | |
385 | return $ret; | |
386 | } | |
387 | } | |
388 | } | |
389 | return FALSE; | |
390 | } | |
391 | ||
392 | /** | |
393 | * This function is used to convert associative array names to values | |
394 | * and vice-versa. | |
395 | * | |
396 | * This function is used by both the web form layer and the api. Note that | |
397 | * the api needs the name => value conversion, also the view layer typically | |
398 | * requires value => name conversion | |
399 | */ | |
00be9182 | 400 | public static function lookupValue(&$defaults, $property, $lookup, $reverse) { |
6a488035 TO |
401 | $id = $property . '_id'; |
402 | ||
403 | $src = $reverse ? $property : $id; | |
404 | $dst = $reverse ? $id : $property; | |
405 | ||
406 | if (!array_key_exists(strtolower($src), array_change_key_case($defaults, CASE_LOWER))) { | |
407 | return FALSE; | |
408 | } | |
409 | ||
410 | $look = $reverse ? array_flip($lookup) : $lookup; | |
411 | ||
412 | //trim lookup array, ignore . ( fix for CRM-1514 ), eg for prefix/suffix make sure Dr. and Dr both are valid | |
413 | $newLook = array(); | |
414 | foreach ($look as $k => $v) { | |
415 | $newLook[trim($k, ".")] = $v; | |
416 | } | |
417 | ||
418 | $look = $newLook; | |
419 | ||
420 | if (is_array($look)) { | |
421 | if (!array_key_exists(trim(strtolower($defaults[strtolower($src)]), '.'), array_change_key_case($look, CASE_LOWER))) { | |
422 | return FALSE; | |
423 | } | |
424 | } | |
425 | ||
426 | $tempLook = array_change_key_case($look, CASE_LOWER); | |
427 | ||
428 | $defaults[$dst] = $tempLook[trim(strtolower($defaults[strtolower($src)]), '.')]; | |
429 | return TRUE; | |
430 | } | |
431 | ||
432 | /** | |
c9e15d2a RS |
433 | * Checks whether an array is empty. |
434 | * | |
435 | * An array is empty if its values consist only of NULL and empty sub-arrays. | |
436 | * Containing a non-NULL value or non-empty array makes an array non-empty. | |
437 | * | |
438 | * If something other than an array is passed, it is considered to be empty. | |
439 | * | |
440 | * If nothing is passed at all, the default value provided is empty. | |
441 | * | |
442 | * @param array $array | |
443 | * (optional) Array to be checked for emptiness. | |
6a488035 | 444 | * |
c9e15d2a RS |
445 | * @return boolean |
446 | * True if the array is empty. | |
6a488035 | 447 | */ |
00be9182 | 448 | public static function crmIsEmptyArray($array = array()) { |
6a488035 TO |
449 | if (!is_array($array)) { |
450 | return TRUE; | |
451 | } | |
452 | foreach ($array as $element) { | |
453 | if (is_array($element)) { | |
454 | if (!self::crmIsEmptyArray($element)) { | |
455 | return FALSE; | |
456 | } | |
457 | } | |
458 | elseif (isset($element)) { | |
459 | return FALSE; | |
460 | } | |
461 | } | |
462 | return TRUE; | |
463 | } | |
464 | ||
6a488035 | 465 | /** |
c9e15d2a | 466 | * Sorts an associative array of arrays by an attribute using strnatcmp(). |
6a488035 | 467 | * |
c9e15d2a RS |
468 | * @param array $array |
469 | * Array to be sorted. | |
470 | * @param string $field | |
471 | * Name of the attribute used for sorting. | |
6a488035 | 472 | * |
f4aaa82a | 473 | * @return array |
c9e15d2a | 474 | * Sorted array |
6a488035 | 475 | */ |
00be9182 | 476 | public static function crmArraySortByField($array, $field) { |
6a488035 TO |
477 | $code = "return strnatcmp(\$a['$field'], \$b['$field']);"; |
478 | uasort($array, create_function('$a,$b', $code)); | |
479 | return $array; | |
480 | } | |
481 | ||
482 | /** | |
c9e15d2a | 483 | * Recursively removes duplicate values from a multi-dimensional array. |
6a488035 | 484 | * |
c9e15d2a RS |
485 | * @param array $array |
486 | * The input array possibly containing duplicate values. | |
6a488035 | 487 | * |
f4aaa82a | 488 | * @return array |
c9e15d2a | 489 | * The input array with duplicate values removed. |
6a488035 | 490 | */ |
00be9182 | 491 | public static function crmArrayUnique($array) { |
6a488035 TO |
492 | $result = array_map("unserialize", array_unique(array_map("serialize", $array))); |
493 | foreach ($result as $key => $value) { | |
494 | if (is_array($value)) { | |
495 | $result[$key] = self::crmArrayUnique($value); | |
496 | } | |
497 | } | |
498 | return $result; | |
499 | } | |
500 | ||
501 | /** | |
c9e15d2a RS |
502 | * Sorts an array and maintains index association (with localization). |
503 | * | |
504 | * Uses Collate from the PECL "intl" package, if available, for UTF-8 | |
505 | * sorting (e.g. list of countries). Otherwise calls PHP's asort(). | |
6a488035 | 506 | * |
c9e15d2a | 507 | * On Debian/Ubuntu: apt-get install php5-intl |
6a488035 | 508 | * |
c9e15d2a RS |
509 | * @param array $array |
510 | * (optional) Array to be sorted. | |
511 | * | |
f4aaa82a | 512 | * @return array |
c9e15d2a | 513 | * Sorted array. |
6a488035 | 514 | */ |
00be9182 | 515 | public static function asort($array = array()) { |
6a488035 TO |
516 | $lcMessages = CRM_Utils_System::getUFLocale(); |
517 | ||
518 | if ($lcMessages && $lcMessages != 'en_US' && class_exists('Collator')) { | |
519 | $collator = new Collator($lcMessages . '.utf8'); | |
520 | $collator->asort($array); | |
521 | } | |
522 | else { | |
c9e15d2a | 523 | // This calls PHP's built-in asort(). |
6a488035 TO |
524 | asort($array); |
525 | } | |
526 | ||
527 | return $array; | |
528 | } | |
529 | ||
530 | /** | |
c9e15d2a RS |
531 | * Unsets an arbitrary list of array elements from an associative array. |
532 | * | |
533 | * @param array $items | |
534 | * The array from which to remove items. | |
f4aaa82a EM |
535 | * |
536 | * @internal param string|\string[] $key When passed a string, unsets $items[$key].* When passed a string, unsets $items[$key]. | |
c9e15d2a RS |
537 | * When passed an array of strings, unsets $items[$k] for each string $k |
538 | * in the array. | |
6a488035 | 539 | */ |
e7292422 TO |
540 | public static function remove(&$items) { |
541 | foreach (func_get_args() as $n => $key) { | |
542 | // Skip argument 0 ($items) by testing $n for truth. | |
543 | if ($n && is_array($key)) { | |
544 | foreach($key as $k) { | |
545 | unset($items[$k]); | |
546 | } | |
547 | } | |
548 | elseif ($n) { | |
549 | unset($items[$key]); | |
550 | } | |
551 | } | |
552 | } | |
6a488035 TO |
553 | |
554 | /** | |
c9e15d2a | 555 | * Builds an array-tree which indexes the records in an array. |
6a488035 | 556 | * |
c9e15d2a RS |
557 | * @param string[] $keys |
558 | * Properties by which to index. | |
559 | * @param object|array $records | |
560 | * | |
561 | * @return array | |
562 | * Multi-dimensional array, with one layer for each key. | |
6a488035 | 563 | */ |
00be9182 | 564 | public static function index($keys, $records) { |
6a488035 TO |
565 | $final_key = array_pop($keys); |
566 | ||
567 | $result = array(); | |
568 | foreach ($records as $record) { | |
569 | $node = &$result; | |
570 | foreach ($keys as $key) { | |
571 | if (is_array($record)) { | |
928c5201 | 572 | $keyvalue = isset($record[$key]) ? $record[$key] : NULL; |
6a488035 | 573 | } else { |
928c5201 | 574 | $keyvalue = isset($record->{$key}) ? $record->{$key} : NULL; |
6a488035 | 575 | } |
17d4d611 | 576 | if (isset($node[$keyvalue]) && !is_array($node[$keyvalue])) { |
6a488035 TO |
577 | $node[$keyvalue] = array(); |
578 | } | |
579 | $node = &$node[$keyvalue]; | |
580 | } | |
581 | if (is_array($record)) { | |
e7292422 | 582 | $node[$record[$final_key]] = $record; |
6a488035 | 583 | } else { |
e7292422 | 584 | $node[$record->{$final_key}] = $record; |
6a488035 TO |
585 | } |
586 | } | |
587 | return $result; | |
588 | } | |
589 | ||
590 | /** | |
c9e15d2a | 591 | * Iterates over a list of records and returns the value of some property. |
6a488035 TO |
592 | * |
593 | * @param string $prop | |
c9e15d2a RS |
594 | * Property to retrieve. |
595 | * @param array|object $records | |
596 | * A list of records. | |
597 | * | |
598 | * @return array | |
599 | * Keys are the original keys of $records; values are the $prop values. | |
6a488035 | 600 | */ |
00be9182 | 601 | public static function collect($prop, $records) { |
6a488035 | 602 | $result = array(); |
4d34fcfa | 603 | if (is_array($records)) { |
604 | foreach ($records as $key => $record) { | |
605 | if (is_object($record)) { | |
606 | $result[$key] = $record->{$prop}; | |
607 | } else { | |
608 | $result[$key] = $record[$prop]; | |
609 | } | |
6a488035 TO |
610 | } |
611 | } | |
612 | return $result; | |
613 | } | |
614 | ||
6a488035 | 615 | /** |
c9e15d2a | 616 | * Trims delimiters from a string and then splits it using explode(). |
6a488035 | 617 | * |
c9e15d2a RS |
618 | * This method works mostly like PHP's built-in explode(), except that |
619 | * surrounding delimiters are trimmed before explode() is called. | |
620 | * | |
621 | * Also, if an array or NULL is passed as the $values parameter, the value is | |
622 | * returned unmodified rather than being passed to explode(). | |
623 | * | |
624 | * @param array|null|string $values | |
625 | * The input string (or an array, or NULL). | |
6a488035 | 626 | * @param string $delim |
c9e15d2a RS |
627 | * (optional) The boundary string. |
628 | * | |
629 | * @return array|null | |
630 | * An array of strings produced by explode(), or the unmodified input | |
631 | * array, or NULL. | |
6a488035 | 632 | */ |
00be9182 | 633 | public static function explodePadded($values, $delim = CRM_Core_DAO::VALUE_SEPARATOR) { |
fe18a93c | 634 | if ($values === NULL) { |
6a488035 TO |
635 | return NULL; |
636 | } | |
fe18a93c CW |
637 | // If we already have an array, no need to continue |
638 | if (is_array($values)) { | |
639 | return $values; | |
640 | } | |
641 | return explode($delim, trim((string) $values, $delim)); | |
6a488035 TO |
642 | } |
643 | ||
644 | /** | |
c9e15d2a RS |
645 | * Joins array elements with a string, adding surrounding delimiters. |
646 | * | |
647 | * This method works mostly like PHP's built-in implode(), but the generated | |
648 | * string is surrounded by delimiter characters. Also, if NULL is passed as | |
649 | * the $values parameter, NULL is returned. | |
6a488035 | 650 | * |
fe18a93c | 651 | * @param mixed $values |
c9e15d2a RS |
652 | * Array to be imploded. If a non-array is passed, it will be cast to an |
653 | * array. | |
6a488035 | 654 | * @param string $delim |
c9e15d2a RS |
655 | * Delimiter to be used for implode() and which will surround the output |
656 | * string. | |
657 | * | |
fe18a93c | 658 | * @return string|NULL |
c9e15d2a | 659 | * The generated string, or NULL if NULL was passed as $values parameter. |
6a488035 | 660 | */ |
00be9182 | 661 | public static function implodePadded($values, $delim = CRM_Core_DAO::VALUE_SEPARATOR) { |
6a488035 TO |
662 | if ($values === NULL) { |
663 | return NULL; | |
664 | } | |
fe18a93c CW |
665 | // If we already have a string, strip $delim off the ends so it doesn't get added twice |
666 | if (is_string($values)) { | |
667 | $values = trim($values, $delim); | |
668 | } | |
669 | return $delim . implode($delim, (array) $values) . $delim; | |
6a488035 TO |
670 | } |
671 | ||
672 | /** | |
c9e15d2a RS |
673 | * Modifies a key in an array while preserving the key order. |
674 | * | |
675 | * By default when an element is added to an array, it is added to the end. | |
676 | * This method allows for changing an existing key while preserving its | |
677 | * position in the array. | |
678 | * | |
679 | * The array is both modified in-place and returned. | |
680 | * | |
681 | * @param array $elementArray | |
682 | * Array to manipulate. | |
683 | * @param string $oldKey | |
684 | * Old key to be replaced. | |
685 | * @param string $newKey | |
686 | * Replacement key string. | |
6a488035 | 687 | * |
c9e15d2a RS |
688 | * @throws Exception |
689 | * Throws a generic Exception if $oldKey is not found in $elementArray. | |
6a488035 TO |
690 | * |
691 | * @return array | |
c9e15d2a | 692 | * The manipulated array. |
6a488035 | 693 | */ |
00be9182 | 694 | public static function crmReplaceKey(&$elementArray, $oldKey, $newKey) { |
6a488035 TO |
695 | $keys = array_keys($elementArray); |
696 | if (FALSE === $index = array_search($oldKey, $keys)) { | |
697 | throw new Exception(sprintf('key "%s" does not exit', $oldKey)); | |
698 | } | |
699 | $keys[$index] = $newKey; | |
700 | $elementArray = array_combine($keys, array_values($elementArray)); | |
701 | return $elementArray; | |
702 | } | |
bd7b39e7 PJ |
703 | |
704 | /* | |
c9e15d2a RS |
705 | * Searches array keys by regex, returning the value of the first match. |
706 | * | |
707 | * Given a regular expression and an array, this method searches the keys | |
708 | * of the array using the regular expression. The first match is then used | |
709 | * to index into the array, and the associated value is retrieved and | |
710 | * returned. If no matches are found, or if something other than an array | |
711 | * is passed, then a default value is returned. Unless otherwise specified, | |
712 | * the default value is NULL. | |
713 | * | |
714 | * @param string $regexKey | |
715 | * The regular expression to use when searching for matching keys. | |
716 | * @param array $list | |
717 | * The array whose keys will be searched. | |
718 | * @param mixed $default | |
719 | * (optional) The default value to return if the regex does not match an | |
720 | * array key, or if something other than an array is passed. | |
721 | * | |
722 | * @return mixed | |
723 | * The value found. | |
bd7b39e7 | 724 | */ |
5bc392e6 EM |
725 | /** |
726 | * @param $regexKey | |
727 | * @param $list | |
728 | * @param null $default | |
729 | * | |
730 | * @return null | |
731 | */ | |
00be9182 | 732 | public static function valueByRegexKey($regexKey, $list, $default = NULL) { |
bd7b39e7 PJ |
733 | if (is_array($list) && $regexKey) { |
734 | $matches = preg_grep($regexKey, array_keys($list)); | |
735 | $key = reset($matches); | |
736 | return ($key && array_key_exists($key, $list)) ? $list[$key] : $default; | |
737 | } | |
738 | return $default; | |
739 | } | |
17deafad TO |
740 | |
741 | /** | |
c9e15d2a | 742 | * Generates the Cartesian product of zero or more vectors. |
17deafad | 743 | * |
c9e15d2a RS |
744 | * @param array $dimensions |
745 | * List of dimensions to multiply. | |
746 | * Each key is a dimension name; each value is a vector. | |
747 | * @param array $template | |
748 | * (optional) A base set of values included in every output. | |
749 | * | |
750 | * @return array | |
751 | * Each item is a distinct combination of values from $dimensions. | |
17deafad TO |
752 | * |
753 | * For example, the product of | |
754 | * { | |
755 | * fg => {red, blue}, | |
756 | * bg => {white, black} | |
757 | * } | |
758 | * would be | |
759 | * { | |
760 | * {fg => red, bg => white}, | |
761 | * {fg => red, bg => black}, | |
762 | * {fg => blue, bg => white}, | |
763 | * {fg => blue, bg => black} | |
764 | * } | |
765 | */ | |
00be9182 | 766 | public static function product($dimensions, $template = array()) { |
17deafad TO |
767 | if (empty($dimensions)) { |
768 | return array($template); | |
769 | } | |
770 | ||
771 | foreach ($dimensions as $key => $value) { | |
772 | $firstKey = $key; | |
773 | $firstValues = $value; | |
774 | break; | |
775 | } | |
776 | unset($dimensions[$key]); | |
777 | ||
778 | $results = array(); | |
779 | foreach ($firstValues as $firstValue) { | |
780 | foreach (self::product($dimensions, $template) as $result) { | |
781 | $result[$firstKey] = $firstValue; | |
782 | $results[] = $result; | |
783 | } | |
784 | } | |
785 | ||
786 | return $results; | |
787 | } | |
eb20fbf0 TO |
788 | |
789 | /** | |
218c8563 | 790 | * Get the first element of an array |
eb20fbf0 TO |
791 | * |
792 | * @param array $array | |
793 | * @return mixed|NULL | |
794 | */ | |
00be9182 | 795 | public static function first($array) { |
eb20fbf0 TO |
796 | foreach ($array as $value) { |
797 | return $value; | |
798 | } | |
799 | return NULL; | |
800 | } | |
768c558c TO |
801 | |
802 | /** | |
803 | * Extract any $keys from $array and copy to a new array. | |
804 | * | |
805 | * Note: If a $key does not appear in $array, then it will | |
806 | * not appear in the result. | |
807 | * | |
808 | * @param array $array | |
77855840 TO |
809 | * @param array $keys |
810 | * List of keys to copy. | |
768c558c TO |
811 | * @return array |
812 | */ | |
00be9182 | 813 | public static function subset($array, $keys) { |
768c558c TO |
814 | $result = array(); |
815 | foreach ($keys as $key) { | |
816 | if (isset($array[$key])) { | |
817 | $result[$key] = $array[$key]; | |
818 | } | |
819 | } | |
820 | return $result; | |
821 | } | |
a335f6b2 | 822 | |
b7ceb253 CW |
823 | /** |
824 | * Transform an associative array of key=>value pairs into a non-associative array of arrays. | |
825 | * This is necessary to preserve sort order when sending an array through json_encode. | |
826 | * | |
827 | * @param array $associative | |
828 | * @param string $keyName | |
829 | * @param string $valueName | |
830 | * @return array | |
831 | */ | |
00be9182 | 832 | public static function makeNonAssociative($associative, $keyName = 'key', $valueName = 'value') { |
b7ceb253 CW |
833 | $output = array(); |
834 | foreach ($associative as $key => $val) { | |
835 | $output[] = array($keyName => $key, $valueName => $val); | |
836 | } | |
837 | return $output; | |
838 | } | |
6a488035 | 839 | } |