| 1 | <?php |
| 2 | /* |
| 3 | +--------------------------------------------------------------------+ |
| 4 | | Copyright CiviCRM LLC. All rights reserved. | |
| 5 | | | |
| 6 | | This work is published under the GNU AGPLv3 license with some | |
| 7 | | permitted exceptions and without any warranty. For full license | |
| 8 | | and copyright information, see https://civicrm.org/licensing | |
| 9 | +--------------------------------------------------------------------+ |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * Provides a collection of static methods for array manipulation. |
| 14 | * |
| 15 | * @package CRM |
| 16 | * @copyright CiviCRM LLC https://civicrm.org/licensing |
| 17 | */ |
| 18 | class CRM_Utils_Array { |
| 19 | |
| 20 | /** |
| 21 | * Cast a value to an array. |
| 22 | * |
| 23 | * This is similar to PHP's `(array)`, but it also converts iterators. |
| 24 | * |
| 25 | * @param mixed $value |
| 26 | * @return array |
| 27 | */ |
| 28 | public static function cast($value) { |
| 29 | if (is_array($value)) { |
| 30 | return $value; |
| 31 | } |
| 32 | if ($value instanceof CRM_Utils_LazyArray || $value instanceof ArrayObject) { |
| 33 | // iterator_to_array() would work here, but getArrayCopy() doesn't require actual iterations. |
| 34 | return $value->getArrayCopy(); |
| 35 | } |
| 36 | if (is_iterable($value)) { |
| 37 | return iterator_to_array($value); |
| 38 | } |
| 39 | if (is_scalar($value)) { |
| 40 | return [$value]; |
| 41 | } |
| 42 | throw new \RuntimeException(sprintf("Cannot cast %s to array", gettype($value))); |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Returns $list[$key] if such element exists, or a default value otherwise. |
| 47 | * |
| 48 | * If $list is not actually an array at all, then the default value is |
| 49 | * returned. We hope to deprecate this behaviour. |
| 50 | * |
| 51 | * |
| 52 | * @param string $key |
| 53 | * Key value to look up in the array. |
| 54 | * @param array|ArrayAccess $list |
| 55 | * Array from which to look up a value. |
| 56 | * @param mixed $default |
| 57 | * (optional) Value to return $list[$key] does not exist. |
| 58 | * |
| 59 | * @return mixed |
| 60 | * Can return any type, since $list might contain anything. |
| 61 | */ |
| 62 | public static function value($key, $list, $default = NULL) { |
| 63 | if (is_array($list)) { |
| 64 | return array_key_exists($key, $list) ? $list[$key] : $default; |
| 65 | } |
| 66 | if ($list instanceof ArrayAccess) { |
| 67 | // ArrayAccess requires offsetExists is implemented for the equivalent to array_key_exists. |
| 68 | return $list->offsetExists($key) ? $list[$key] : $default; |
| 69 | } |
| 70 | // @todo - eliminate these from core & uncomment this line. |
| 71 | // CRM_Core_Error::deprecatedFunctionWarning('You have passed an invalid parameter for the "list"'); |
| 72 | return $default; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Recursively searches an array for a key, returning the first value found. |
| 77 | * |
| 78 | * If $params[$key] does not exist and $params contains arrays, descend into |
| 79 | * each array in a depth-first manner, in array iteration order. |
| 80 | * |
| 81 | * @param array $params |
| 82 | * The array to be searched. |
| 83 | * @param string $key |
| 84 | * The key to search for. |
| 85 | * |
| 86 | * @return mixed |
| 87 | * The value of the key, or null if the key is not found. |
| 88 | */ |
| 89 | public static function retrieveValueRecursive(array $params, string $key) { |
| 90 | // Note that !empty means funky handling for 0 |
| 91 | // but it is 'baked in'. We should probably deprecate this |
| 92 | // for a more logical approach. |
| 93 | // see https://github.com/civicrm/civicrm-core/pull/19478#issuecomment-785388559 |
| 94 | if (!empty($params[$key])) { |
| 95 | return $params[$key]; |
| 96 | } |
| 97 | foreach ($params as $subParam) { |
| 98 | if (is_array($subParam) && |
| 99 | // @todo - this will mishandle values like 0 and false |
| 100 | // but it's a little scary to fix. |
| 101 | $value = self::retrieveValueRecursive($subParam, $key) |
| 102 | ) { |
| 103 | return $value; |
| 104 | } |
| 105 | } |
| 106 | return NULL; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Recursively searches through a given array for all matches |
| 111 | * |
| 112 | * @param array|null $collection |
| 113 | * @param array|callable|string $predicate |
| 114 | * @return array |
| 115 | */ |
| 116 | public static function findAll($collection, $predicate) { |
| 117 | $results = []; |
| 118 | $search = function($collection) use (&$search, &$results, $predicate) { |
| 119 | if (is_array($collection)) { |
| 120 | if (is_callable($predicate)) { |
| 121 | if ($predicate($collection)) { |
| 122 | $results[] = $collection; |
| 123 | } |
| 124 | } |
| 125 | elseif (is_array($predicate)) { |
| 126 | if (count(array_intersect_assoc($collection, $predicate)) === count($predicate)) { |
| 127 | $results[] = $collection; |
| 128 | } |
| 129 | } |
| 130 | else { |
| 131 | if (array_key_exists($predicate, $collection)) { |
| 132 | $results[] = $collection; |
| 133 | } |
| 134 | } |
| 135 | foreach ($collection as $item) { |
| 136 | $search($item); |
| 137 | } |
| 138 | } |
| 139 | }; |
| 140 | $search($collection); |
| 141 | return $results; |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * Wraps and slightly changes the behavior of PHP's array_search(). |
| 146 | * |
| 147 | * This function reproduces the behavior of array_search() from PHP prior to |
| 148 | * version 4.2.0, which was to return NULL on failure. This function also |
| 149 | * checks that $list is an array before attempting to search it. |
| 150 | * |
| 151 | * |
| 152 | * @param mixed $value |
| 153 | * The value to search for. |
| 154 | * @param array $list |
| 155 | * The array to be searched. |
| 156 | * |
| 157 | * @return int|string|null |
| 158 | * Returns the key, which could be an int or a string, or NULL on failure. |
| 159 | */ |
| 160 | public static function key($value, $list) { |
| 161 | if (is_array($list)) { |
| 162 | $key = array_search($value, $list); |
| 163 | |
| 164 | // array_search returns key if found, false otherwise |
| 165 | // it may return values like 0 or empty string which |
| 166 | // evaluates to false |
| 167 | // hence we must use identical comparison operator |
| 168 | return ($key === FALSE) ? NULL : $key; |
| 169 | } |
| 170 | return NULL; |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Builds an XML fragment representing an array. |
| 175 | * |
| 176 | * Depending on the nature of the keys of the array (and its sub-arrays, |
| 177 | * if any) the XML fragment may not be valid. |
| 178 | * |
| 179 | * @param array $list |
| 180 | * The array to be serialized. |
| 181 | * @param int $depth |
| 182 | * (optional) Indentation depth counter. |
| 183 | * @param string $separator |
| 184 | * (optional) String to be appended after open/close tags. |
| 185 | * |
| 186 | * @return string |
| 187 | * XML fragment representing $list. |
| 188 | */ |
| 189 | public static function &xml(&$list, $depth = 1, $separator = "\n") { |
| 190 | $xml = ''; |
| 191 | foreach ($list as $name => $value) { |
| 192 | $xml .= str_repeat(' ', $depth * 4); |
| 193 | if (is_array($value)) { |
| 194 | $xml .= "<{$name}>{$separator}"; |
| 195 | $xml .= self::xml($value, $depth + 1, $separator); |
| 196 | $xml .= str_repeat(' ', $depth * 4); |
| 197 | $xml .= "</{$name}>{$separator}"; |
| 198 | } |
| 199 | else { |
| 200 | // make sure we escape value |
| 201 | $value = self::escapeXML($value); |
| 202 | $xml .= "<{$name}>$value</{$name}>{$separator}"; |
| 203 | } |
| 204 | } |
| 205 | return $xml; |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * Sanitizes a string for serialization in CRM_Utils_Array::xml(). |
| 210 | * |
| 211 | * Replaces '&', '<', and '>' with their XML escape sequences. Replaces '^A' |
| 212 | * with a comma. |
| 213 | * |
| 214 | * @param string $value |
| 215 | * String to be sanitized. |
| 216 | * |
| 217 | * @return string |
| 218 | * Sanitized version of $value. |
| 219 | */ |
| 220 | public static function escapeXML($value) { |
| 221 | static $src = NULL; |
| 222 | static $dst = NULL; |
| 223 | |
| 224 | if (!$src) { |
| 225 | $src = ['&', '<', '>', '\ 1']; |
| 226 | $dst = ['&', '<', '>', ',']; |
| 227 | } |
| 228 | |
| 229 | return str_replace($src, $dst, $value); |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * Converts a nested array to a flat array. |
| 234 | * |
| 235 | * The nested structure is preserved in the string values of the keys of the |
| 236 | * flat array. |
| 237 | * |
| 238 | * Example nested array: |
| 239 | * Array |
| 240 | * ( |
| 241 | * [foo] => Array |
| 242 | * ( |
| 243 | * [0] => bar |
| 244 | * [1] => baz |
| 245 | * [2] => 42 |
| 246 | * ) |
| 247 | * |
| 248 | * [asdf] => Array |
| 249 | * ( |
| 250 | * [merp] => bleep |
| 251 | * [quack] => Array |
| 252 | * ( |
| 253 | * [0] => 1 |
| 254 | * [1] => 2 |
| 255 | * [2] => 3 |
| 256 | * ) |
| 257 | * |
| 258 | * ) |
| 259 | * |
| 260 | * [quux] => 999 |
| 261 | * ) |
| 262 | * |
| 263 | * Corresponding flattened array: |
| 264 | * Array |
| 265 | * ( |
| 266 | * [foo.0] => bar |
| 267 | * [foo.1] => baz |
| 268 | * [foo.2] => 42 |
| 269 | * [asdf.merp] => bleep |
| 270 | * [asdf.quack.0] => 1 |
| 271 | * [asdf.quack.1] => 2 |
| 272 | * [asdf.quack.2] => 3 |
| 273 | * [quux] => 999 |
| 274 | * ) |
| 275 | * |
| 276 | * @param array $list |
| 277 | * Array to be flattened. |
| 278 | * @param array $flat |
| 279 | * Destination array. |
| 280 | * @param string $prefix |
| 281 | * (optional) String to prepend to keys. |
| 282 | * @param string $separator |
| 283 | * (optional) String that separates the concatenated keys. |
| 284 | */ |
| 285 | public static function flatten(&$list, &$flat, $prefix = '', $separator = ".") { |
| 286 | foreach ($list as $name => $value) { |
| 287 | $newPrefix = ($prefix) ? $prefix . $separator . $name : $name; |
| 288 | if (is_array($value)) { |
| 289 | self::flatten($value, $flat, $newPrefix, $separator); |
| 290 | } |
| 291 | else { |
| 292 | $flat[$newPrefix] = $value; |
| 293 | } |
| 294 | } |
| 295 | } |
| 296 | |
| 297 | /** |
| 298 | * Converts an array with path-like keys into a tree of arrays. |
| 299 | * |
| 300 | * This function is the inverse of CRM_Utils_Array::flatten(). |
| 301 | * |
| 302 | * @param string $delim |
| 303 | * A path delimiter |
| 304 | * @param array $arr |
| 305 | * A one-dimensional array indexed by string keys |
| 306 | * |
| 307 | * @return array |
| 308 | * Array-encoded tree |
| 309 | */ |
| 310 | public function unflatten($delim, &$arr) { |
| 311 | $result = []; |
| 312 | foreach ($arr as $key => $value) { |
| 313 | $path = explode($delim, $key); |
| 314 | $node = &$result; |
| 315 | while (count($path) > 1) { |
| 316 | $key = array_shift($path); |
| 317 | if (!isset($node[$key])) { |
| 318 | $node[$key] = []; |
| 319 | } |
| 320 | $node = &$node[$key]; |
| 321 | } |
| 322 | // last part of path |
| 323 | $key = array_shift($path); |
| 324 | $node[$key] = $value; |
| 325 | } |
| 326 | return $result; |
| 327 | } |
| 328 | |
| 329 | /** |
| 330 | * Merges two arrays. |
| 331 | * |
| 332 | * If $a1[foo] and $a2[foo] both exist and are both arrays, the merge |
| 333 | * process recurses into those sub-arrays. If $a1[foo] and $a2[foo] both |
| 334 | * exist but they are not both arrays, the value from $a1 overrides the |
| 335 | * value from $a2 and the value from $a2 is discarded. |
| 336 | * |
| 337 | * @param array $a1 |
| 338 | * First array to be merged. |
| 339 | * @param array $a2 |
| 340 | * Second array to be merged. |
| 341 | * |
| 342 | * @return array |
| 343 | * The merged array. |
| 344 | */ |
| 345 | public static function crmArrayMerge($a1, $a2) { |
| 346 | if (empty($a1)) { |
| 347 | return $a2; |
| 348 | } |
| 349 | |
| 350 | if (empty($a2)) { |
| 351 | return $a1; |
| 352 | } |
| 353 | |
| 354 | $a3 = []; |
| 355 | foreach ($a1 as $key => $value) { |
| 356 | if (array_key_exists($key, $a2) && |
| 357 | is_array($a2[$key]) && is_array($a1[$key]) |
| 358 | ) { |
| 359 | $a3[$key] = array_merge($a1[$key], $a2[$key]); |
| 360 | } |
| 361 | else { |
| 362 | $a3[$key] = $a1[$key]; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | foreach ($a2 as $key => $value) { |
| 367 | if (array_key_exists($key, $a1)) { |
| 368 | // already handled in above loop |
| 369 | continue; |
| 370 | } |
| 371 | $a3[$key] = $a2[$key]; |
| 372 | } |
| 373 | |
| 374 | return $a3; |
| 375 | } |
| 376 | |
| 377 | /** |
| 378 | * Determines whether an array contains any sub-arrays. |
| 379 | * |
| 380 | * @param array $list |
| 381 | * The array to inspect. |
| 382 | * |
| 383 | * @return bool |
| 384 | * True if $list contains at least one sub-array, false otherwise. |
| 385 | */ |
| 386 | public static function isHierarchical(&$list) { |
| 387 | foreach ($list as $n => $v) { |
| 388 | if (is_array($v)) { |
| 389 | return TRUE; |
| 390 | } |
| 391 | } |
| 392 | return FALSE; |
| 393 | } |
| 394 | |
| 395 | /** |
| 396 | * Is array A a subset of array B. |
| 397 | * |
| 398 | * @param array $subset |
| 399 | * @param array $superset |
| 400 | * |
| 401 | * @return bool |
| 402 | * TRUE if $subset is a subset of $superset |
| 403 | */ |
| 404 | public static function isSubset($subset, $superset) { |
| 405 | foreach ($subset as $expected) { |
| 406 | if (!in_array($expected, $superset)) { |
| 407 | return FALSE; |
| 408 | } |
| 409 | } |
| 410 | return TRUE; |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Searches an array recursively in an optionally case-insensitive manner. |
| 415 | * |
| 416 | * @param string $value |
| 417 | * Value to search for. |
| 418 | * @param array $params |
| 419 | * Array to search within. |
| 420 | * @param bool $caseInsensitive |
| 421 | * (optional) Whether to search in a case-insensitive manner. |
| 422 | * |
| 423 | * @return bool |
| 424 | * True if $value was found, false otherwise. |
| 425 | */ |
| 426 | public static function crmInArray($value, $params, $caseInsensitive = TRUE) { |
| 427 | foreach ($params as $item) { |
| 428 | if (is_array($item)) { |
| 429 | $ret = self::crmInArray($value, $item, $caseInsensitive); |
| 430 | } |
| 431 | else { |
| 432 | $ret = ($caseInsensitive) ? strtolower($item) == strtolower($value) : $item == $value; |
| 433 | if ($ret) { |
| 434 | return $ret; |
| 435 | } |
| 436 | } |
| 437 | } |
| 438 | return FALSE; |
| 439 | } |
| 440 | |
| 441 | /** |
| 442 | * Convert associative array names to values and vice-versa. |
| 443 | * |
| 444 | * This function is used by by import functions and some webforms. |
| 445 | * |
| 446 | * @param array $defaults |
| 447 | * @param string $property |
| 448 | * @param $lookup |
| 449 | * @param $reverse |
| 450 | * |
| 451 | * @return bool |
| 452 | */ |
| 453 | public static function lookupValue(&$defaults, $property, $lookup, $reverse) { |
| 454 | $id = $property . '_id'; |
| 455 | |
| 456 | $src = $reverse ? $property : $id; |
| 457 | $dst = $reverse ? $id : $property; |
| 458 | |
| 459 | if (!array_key_exists(strtolower($src), array_change_key_case($defaults, CASE_LOWER))) { |
| 460 | return FALSE; |
| 461 | } |
| 462 | |
| 463 | $look = $reverse ? array_flip($lookup) : $lookup; |
| 464 | |
| 465 | // trim lookup array, ignore . ( fix for CRM-1514 ), eg for prefix/suffix make sure Dr. and Dr both are valid |
| 466 | $newLook = []; |
| 467 | foreach ($look as $k => $v) { |
| 468 | $newLook[trim($k, ".")] = $v; |
| 469 | } |
| 470 | |
| 471 | $look = $newLook; |
| 472 | |
| 473 | if (is_array($look)) { |
| 474 | if (!array_key_exists(trim(strtolower($defaults[strtolower($src)]), '.'), array_change_key_case($look, CASE_LOWER))) { |
| 475 | return FALSE; |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | $tempLook = array_change_key_case($look, CASE_LOWER); |
| 480 | |
| 481 | $defaults[$dst] = $tempLook[trim(strtolower($defaults[strtolower($src)]), '.')]; |
| 482 | return TRUE; |
| 483 | } |
| 484 | |
| 485 | /** |
| 486 | * Checks whether an array is empty. |
| 487 | * |
| 488 | * An array is empty if its values consist only of NULL and empty sub-arrays. |
| 489 | * Containing a non-NULL value or non-empty array makes an array non-empty. |
| 490 | * |
| 491 | * If something other than an array is passed, it is considered to be empty. |
| 492 | * |
| 493 | * If nothing is passed at all, the default value provided is empty. |
| 494 | * |
| 495 | * @param array $array |
| 496 | * (optional) Array to be checked for emptiness. |
| 497 | * |
| 498 | * @return bool |
| 499 | * True if the array is empty. |
| 500 | */ |
| 501 | public static function crmIsEmptyArray($array = []) { |
| 502 | if (!is_array($array)) { |
| 503 | return TRUE; |
| 504 | } |
| 505 | foreach ($array as $element) { |
| 506 | if (is_array($element)) { |
| 507 | if (!self::crmIsEmptyArray($element)) { |
| 508 | return FALSE; |
| 509 | } |
| 510 | } |
| 511 | elseif (isset($element)) { |
| 512 | return FALSE; |
| 513 | } |
| 514 | } |
| 515 | return TRUE; |
| 516 | } |
| 517 | |
| 518 | /** |
| 519 | * Sorts an associative array of arrays by an attribute using strnatcmp(). |
| 520 | * |
| 521 | * @param array $array |
| 522 | * Array to be sorted. |
| 523 | * @param string|array $field |
| 524 | * Name of the attribute used for sorting. |
| 525 | * |
| 526 | * @return array |
| 527 | * Sorted array |
| 528 | */ |
| 529 | public static function crmArraySortByField($array, $field) { |
| 530 | $fields = (array) $field; |
| 531 | uasort($array, function ($a, $b) use ($fields) { |
| 532 | foreach ($fields as $f) { |
| 533 | $v = strnatcmp($a[$f], $b[$f]); |
| 534 | if ($v !== 0) { |
| 535 | return $v; |
| 536 | } |
| 537 | } |
| 538 | return 0; |
| 539 | }); |
| 540 | return $array; |
| 541 | } |
| 542 | |
| 543 | /** |
| 544 | * Recursively removes duplicate values from a multi-dimensional array. |
| 545 | * |
| 546 | * @param array $array |
| 547 | * The input array possibly containing duplicate values. |
| 548 | * |
| 549 | * @return array |
| 550 | * The input array with duplicate values removed. |
| 551 | */ |
| 552 | public static function crmArrayUnique($array) { |
| 553 | $result = array_map("unserialize", array_unique(array_map("serialize", $array))); |
| 554 | foreach ($result as $key => $value) { |
| 555 | if (is_array($value)) { |
| 556 | $result[$key] = self::crmArrayUnique($value); |
| 557 | } |
| 558 | } |
| 559 | return $result; |
| 560 | } |
| 561 | |
| 562 | /** |
| 563 | * Sorts an array and maintains index association (with localization). |
| 564 | * |
| 565 | * Uses Collate from the PECL "intl" package, if available, for UTF-8 |
| 566 | * sorting (e.g. list of countries). Otherwise calls PHP's asort(). |
| 567 | * |
| 568 | * On Debian/Ubuntu: apt-get install php5-intl |
| 569 | * |
| 570 | * @param array $array |
| 571 | * (optional) Array to be sorted. |
| 572 | * |
| 573 | * @return array |
| 574 | * Sorted array. |
| 575 | */ |
| 576 | public static function asort($array = []) { |
| 577 | $lcMessages = CRM_Utils_System::getUFLocale(); |
| 578 | |
| 579 | if ($lcMessages && $lcMessages != 'en_US' && class_exists('Collator')) { |
| 580 | $collator = new Collator($lcMessages . '.utf8'); |
| 581 | $collator->asort($array); |
| 582 | } |
| 583 | else { |
| 584 | // This calls PHP's built-in asort(). |
| 585 | asort($array); |
| 586 | } |
| 587 | |
| 588 | return $array; |
| 589 | } |
| 590 | |
| 591 | /** |
| 592 | * Unsets an arbitrary list of array elements from an associative array. |
| 593 | * |
| 594 | * @param array $items |
| 595 | * The array from which to remove items. |
| 596 | * |
| 597 | * Additional params: |
| 598 | * When passed a string, unsets $items[$key]. |
| 599 | * When passed an array of strings, unsets $items[$k] for each string $k in the array. |
| 600 | */ |
| 601 | public static function remove(&$items) { |
| 602 | foreach (func_get_args() as $n => $key) { |
| 603 | // Skip argument 0 ($items) by testing $n for truth. |
| 604 | if ($n && is_array($key)) { |
| 605 | foreach ($key as $k) { |
| 606 | unset($items[$k]); |
| 607 | } |
| 608 | } |
| 609 | elseif ($n) { |
| 610 | unset($items[$key]); |
| 611 | } |
| 612 | } |
| 613 | } |
| 614 | |
| 615 | /** |
| 616 | * Builds an array-tree which indexes the records in an array. |
| 617 | * |
| 618 | * @param string[] $keys |
| 619 | * Properties by which to index. |
| 620 | * @param object|array $records |
| 621 | * |
| 622 | * @return array |
| 623 | * Multi-dimensional array, with one layer for each key. |
| 624 | */ |
| 625 | public static function index($keys, $records) { |
| 626 | $final_key = array_pop($keys); |
| 627 | |
| 628 | $result = []; |
| 629 | foreach ($records as $record) { |
| 630 | $node = &$result; |
| 631 | foreach ($keys as $key) { |
| 632 | if (is_array($record)) { |
| 633 | $keyvalue = $record[$key] ?? NULL; |
| 634 | } |
| 635 | else { |
| 636 | $keyvalue = $record->{$key} ?? NULL; |
| 637 | } |
| 638 | if (isset($node[$keyvalue]) && !is_array($node[$keyvalue])) { |
| 639 | $node[$keyvalue] = []; |
| 640 | } |
| 641 | $node = &$node[$keyvalue]; |
| 642 | } |
| 643 | if (is_array($record)) { |
| 644 | $node[$record[$final_key]] = $record; |
| 645 | } |
| 646 | else { |
| 647 | $node[$record->{$final_key}] = $record; |
| 648 | } |
| 649 | } |
| 650 | return $result; |
| 651 | } |
| 652 | |
| 653 | /** |
| 654 | * Iterates over a list of records and returns the value of some property. |
| 655 | * |
| 656 | * @param string $prop |
| 657 | * Property to retrieve. |
| 658 | * @param array|object $records |
| 659 | * A list of records. |
| 660 | * |
| 661 | * @return array |
| 662 | * Keys are the original keys of $records; values are the $prop values. |
| 663 | */ |
| 664 | public static function collect($prop, $records) { |
| 665 | $result = []; |
| 666 | if (is_array($records)) { |
| 667 | foreach ($records as $key => $record) { |
| 668 | if (is_object($record)) { |
| 669 | $result[$key] = $record->{$prop}; |
| 670 | } |
| 671 | else { |
| 672 | $result[$key] = self::value($prop, $record); |
| 673 | } |
| 674 | } |
| 675 | } |
| 676 | return $result; |
| 677 | } |
| 678 | |
| 679 | /** |
| 680 | * Iterates over a list of objects and executes some method on each. |
| 681 | * |
| 682 | * Comparison: |
| 683 | * - This is like array_map(), except it executes the objects' method |
| 684 | * instead of a free-form callable. |
| 685 | * - This is like Array::collect(), except it uses a method |
| 686 | * instead of a property. |
| 687 | * |
| 688 | * @param string $method |
| 689 | * The method to execute. |
| 690 | * @param array|Traversable $objects |
| 691 | * A list of objects. |
| 692 | * @param array $args |
| 693 | * An optional list of arguments to pass to the method. |
| 694 | * |
| 695 | * @return array |
| 696 | * Keys are the original keys of $objects; values are the method results. |
| 697 | */ |
| 698 | public static function collectMethod($method, $objects, $args = []) { |
| 699 | $result = []; |
| 700 | if (is_array($objects)) { |
| 701 | foreach ($objects as $key => $object) { |
| 702 | $result[$key] = call_user_func_array([$object, $method], $args); |
| 703 | } |
| 704 | } |
| 705 | return $result; |
| 706 | } |
| 707 | |
| 708 | /** |
| 709 | * Trims delimiters from a string and then splits it using explode(). |
| 710 | * |
| 711 | * This method works mostly like PHP's built-in explode(), except that |
| 712 | * surrounding delimiters are trimmed before explode() is called. |
| 713 | * |
| 714 | * Also, if an array or NULL is passed as the $values parameter, the value is |
| 715 | * returned unmodified rather than being passed to explode(). |
| 716 | * |
| 717 | * @param array|null|string $values |
| 718 | * The input string (or an array, or NULL). |
| 719 | * @param string $delim |
| 720 | * (optional) The boundary string. |
| 721 | * |
| 722 | * @return array|null |
| 723 | * An array of strings produced by explode(), or the unmodified input |
| 724 | * array, or NULL. |
| 725 | */ |
| 726 | public static function explodePadded($values, $delim = CRM_Core_DAO::VALUE_SEPARATOR) { |
| 727 | if ($values === NULL) { |
| 728 | return NULL; |
| 729 | } |
| 730 | // If we already have an array, no need to continue |
| 731 | if (is_array($values)) { |
| 732 | return $values; |
| 733 | } |
| 734 | // Empty string -> empty array |
| 735 | if ($values === '') { |
| 736 | return []; |
| 737 | } |
| 738 | return explode($delim, trim((string) $values, $delim)); |
| 739 | } |
| 740 | |
| 741 | /** |
| 742 | * Joins array elements with a string, adding surrounding delimiters. |
| 743 | * |
| 744 | * This method works mostly like PHP's built-in implode(), but the generated |
| 745 | * string is surrounded by delimiter characters. Also, if NULL is passed as |
| 746 | * the $values parameter, NULL is returned. |
| 747 | * |
| 748 | * @param mixed $values |
| 749 | * Array to be imploded. If a non-array is passed, it will be cast to an |
| 750 | * array. |
| 751 | * @param string $delim |
| 752 | * Delimiter to be used for implode() and which will surround the output |
| 753 | * string. |
| 754 | * |
| 755 | * @return string|NULL |
| 756 | * The generated string, or NULL if NULL was passed as $values parameter. |
| 757 | */ |
| 758 | public static function implodePadded($values, $delim = CRM_Core_DAO::VALUE_SEPARATOR) { |
| 759 | if ($values === NULL) { |
| 760 | return NULL; |
| 761 | } |
| 762 | // If we already have a string, strip $delim off the ends so it doesn't get added twice |
| 763 | if (is_string($values)) { |
| 764 | $values = trim($values, $delim); |
| 765 | } |
| 766 | return $delim . implode($delim, (array) $values) . $delim; |
| 767 | } |
| 768 | |
| 769 | /** |
| 770 | * Modifies a key in an array while preserving the key order. |
| 771 | * |
| 772 | * By default when an element is added to an array, it is added to the end. |
| 773 | * This method allows for changing an existing key while preserving its |
| 774 | * position in the array. |
| 775 | * |
| 776 | * The array is both modified in-place and returned. |
| 777 | * |
| 778 | * @param array $elementArray |
| 779 | * Array to manipulate. |
| 780 | * @param string $oldKey |
| 781 | * Old key to be replaced. |
| 782 | * @param string $newKey |
| 783 | * Replacement key string. |
| 784 | * |
| 785 | * @throws Exception |
| 786 | * Throws a generic Exception if $oldKey is not found in $elementArray. |
| 787 | * |
| 788 | * @return array |
| 789 | * The manipulated array. |
| 790 | */ |
| 791 | public static function crmReplaceKey(&$elementArray, $oldKey, $newKey) { |
| 792 | $keys = array_keys($elementArray); |
| 793 | if (FALSE === $index = array_search($oldKey, $keys)) { |
| 794 | throw new Exception(sprintf('key "%s" does not exit', $oldKey)); |
| 795 | } |
| 796 | $keys[$index] = $newKey; |
| 797 | $elementArray = array_combine($keys, array_values($elementArray)); |
| 798 | return $elementArray; |
| 799 | } |
| 800 | |
| 801 | /** |
| 802 | * Searches array keys by regex, returning the value of the first match. |
| 803 | * |
| 804 | * Given a regular expression and an array, this method searches the keys |
| 805 | * of the array using the regular expression. The first match is then used |
| 806 | * to index into the array, and the associated value is retrieved and |
| 807 | * returned. If no matches are found, or if something other than an array |
| 808 | * is passed, then a default value is returned. Unless otherwise specified, |
| 809 | * the default value is NULL. |
| 810 | * |
| 811 | * @param string $regexKey |
| 812 | * The regular expression to use when searching for matching keys. |
| 813 | * @param array $list |
| 814 | * The array whose keys will be searched. |
| 815 | * @param mixed $default |
| 816 | * (optional) The default value to return if the regex does not match an |
| 817 | * array key, or if something other than an array is passed. |
| 818 | * |
| 819 | * @return mixed |
| 820 | * The value found. |
| 821 | */ |
| 822 | public static function valueByRegexKey($regexKey, $list, $default = NULL) { |
| 823 | if (is_array($list) && $regexKey) { |
| 824 | $matches = preg_grep($regexKey, array_keys($list)); |
| 825 | $key = reset($matches); |
| 826 | return ($key && array_key_exists($key, $list)) ? $list[$key] : $default; |
| 827 | } |
| 828 | return $default; |
| 829 | } |
| 830 | |
| 831 | /** |
| 832 | * Generates the Cartesian product of zero or more vectors. |
| 833 | * |
| 834 | * @param array $dimensions |
| 835 | * List of dimensions to multiply. |
| 836 | * Each key is a dimension name; each value is a vector. |
| 837 | * @param array $template |
| 838 | * (optional) A base set of values included in every output. |
| 839 | * |
| 840 | * @return array |
| 841 | * Each item is a distinct combination of values from $dimensions. |
| 842 | * |
| 843 | * For example, the product of |
| 844 | * { |
| 845 | * fg => {red, blue}, |
| 846 | * bg => {white, black} |
| 847 | * } |
| 848 | * would be |
| 849 | * { |
| 850 | * {fg => red, bg => white}, |
| 851 | * {fg => red, bg => black}, |
| 852 | * {fg => blue, bg => white}, |
| 853 | * {fg => blue, bg => black} |
| 854 | * } |
| 855 | */ |
| 856 | public static function product($dimensions, $template = []) { |
| 857 | if (empty($dimensions)) { |
| 858 | return [$template]; |
| 859 | } |
| 860 | |
| 861 | foreach ($dimensions as $key => $value) { |
| 862 | $firstKey = $key; |
| 863 | $firstValues = $value; |
| 864 | break; |
| 865 | } |
| 866 | unset($dimensions[$key]); |
| 867 | |
| 868 | $results = []; |
| 869 | foreach ($firstValues as $firstValue) { |
| 870 | foreach (self::product($dimensions, $template) as $result) { |
| 871 | $result[$firstKey] = $firstValue; |
| 872 | $results[] = $result; |
| 873 | } |
| 874 | } |
| 875 | |
| 876 | return $results; |
| 877 | } |
| 878 | |
| 879 | /** |
| 880 | * Get the first element of an array. |
| 881 | * |
| 882 | * @param array $array |
| 883 | * @return mixed|NULL |
| 884 | */ |
| 885 | public static function first($array) { |
| 886 | foreach ($array as $value) { |
| 887 | return $value; |
| 888 | } |
| 889 | return NULL; |
| 890 | } |
| 891 | |
| 892 | /** |
| 893 | * Extract any $keys from $array and copy to a new array. |
| 894 | * |
| 895 | * Note: If a $key does not appear in $array, then it will |
| 896 | * not appear in the result. |
| 897 | * |
| 898 | * @param array $array |
| 899 | * @param array $keys |
| 900 | * List of keys to copy. |
| 901 | * @return array |
| 902 | */ |
| 903 | public static function subset($array, $keys) { |
| 904 | $result = []; |
| 905 | foreach ($keys as $key) { |
| 906 | if (isset($array[$key])) { |
| 907 | $result[$key] = $array[$key]; |
| 908 | } |
| 909 | } |
| 910 | return $result; |
| 911 | } |
| 912 | |
| 913 | /** |
| 914 | * Transform an associative array of key=>value pairs into a non-associative array of arrays. |
| 915 | * This is necessary to preserve sort order when sending an array through json_encode. |
| 916 | * |
| 917 | * @param array $associative |
| 918 | * Ex: ['foo' => 'bar']. |
| 919 | * @param string $keyName |
| 920 | * Ex: 'key'. |
| 921 | * @param string $valueName |
| 922 | * Ex: 'value'. |
| 923 | * @return array |
| 924 | * Ex: [0 => ['key' => 'foo', 'value' => 'bar']]. |
| 925 | */ |
| 926 | public static function makeNonAssociative($associative, $keyName = 'key', $valueName = 'value') { |
| 927 | $output = []; |
| 928 | foreach ($associative as $key => $val) { |
| 929 | $output[] = [$keyName => $key, $valueName => $val]; |
| 930 | } |
| 931 | return $output; |
| 932 | } |
| 933 | |
| 934 | /** |
| 935 | * Diff multidimensional arrays |
| 936 | * (array_diff does not support multidimensional array) |
| 937 | * |
| 938 | * @param array $array1 |
| 939 | * @param array $array2 |
| 940 | * @return array |
| 941 | */ |
| 942 | public static function multiArrayDiff($array1, $array2) { |
| 943 | $arrayDiff = []; |
| 944 | foreach ($array1 as $mKey => $mValue) { |
| 945 | if (array_key_exists($mKey, $array2)) { |
| 946 | if (is_array($mValue)) { |
| 947 | $recursiveDiff = self::multiArrayDiff($mValue, $array2[$mKey]); |
| 948 | if (count($recursiveDiff)) { |
| 949 | $arrayDiff[$mKey] = $recursiveDiff; |
| 950 | } |
| 951 | } |
| 952 | else { |
| 953 | if ($mValue != $array2[$mKey]) { |
| 954 | $arrayDiff[$mKey] = $mValue; |
| 955 | } |
| 956 | } |
| 957 | } |
| 958 | else { |
| 959 | $arrayDiff[$mKey] = $mValue; |
| 960 | } |
| 961 | } |
| 962 | return $arrayDiff; |
| 963 | } |
| 964 | |
| 965 | /** |
| 966 | * Given a 2-dimensional matrix, create a new matrix with a restricted list of columns. |
| 967 | * |
| 968 | * @param array $matrix |
| 969 | * All matrix data, as a list of rows. |
| 970 | * @param array $columns |
| 971 | * List of column names. |
| 972 | * @return array |
| 973 | */ |
| 974 | public static function filterColumns($matrix, $columns) { |
| 975 | $newRows = []; |
| 976 | foreach ($matrix as $pos => $oldRow) { |
| 977 | $newRow = []; |
| 978 | foreach ($columns as $column) { |
| 979 | $newRow[$column] = $oldRow[$column] ?? NULL; |
| 980 | } |
| 981 | $newRows[$pos] = $newRow; |
| 982 | } |
| 983 | return $newRows; |
| 984 | } |
| 985 | |
| 986 | /** |
| 987 | * Rotate a matrix, converting from row-oriented array to a column-oriented array. |
| 988 | * |
| 989 | * @param iterable $rows |
| 990 | * Ex: [['a'=>10,'b'=>'11'], ['a'=>20,'b'=>21]] |
| 991 | * Formula: [scalar $rowId => [scalar $colId => mixed $value]] |
| 992 | * @param bool $unique |
| 993 | * Only return unique values. |
| 994 | * @return array |
| 995 | * Ex: ['a'=>[10,20], 'b'=>[11,21]] |
| 996 | * Formula: [scalar $colId => [scalar $rowId => mixed $value]] |
| 997 | * Note: In unique mode, the $rowId is not meaningful. |
| 998 | */ |
| 999 | public static function asColumns(iterable $rows, bool $unique = FALSE) { |
| 1000 | $columns = []; |
| 1001 | foreach ($rows as $rowKey => $row) { |
| 1002 | foreach ($row as $columnKey => $value) { |
| 1003 | if (FALSE === $unique) { |
| 1004 | $columns[$columnKey][$rowKey] = $value; |
| 1005 | } |
| 1006 | elseif (!in_array($value, $columns[$columnKey] ?? [])) { |
| 1007 | $columns[$columnKey][] = $value; |
| 1008 | } |
| 1009 | } |
| 1010 | } |
| 1011 | return $columns; |
| 1012 | } |
| 1013 | |
| 1014 | /** |
| 1015 | * Rewrite the keys in an array. |
| 1016 | * |
| 1017 | * @param array $array |
| 1018 | * @param string|callable $indexBy |
| 1019 | * Either the value to key by, or a function($key, $value) that returns the new key. |
| 1020 | * @return array |
| 1021 | */ |
| 1022 | public static function rekey($array, $indexBy) { |
| 1023 | $result = []; |
| 1024 | foreach ($array as $key => $value) { |
| 1025 | $newKey = is_callable($indexBy) ? $indexBy($key, $value) : $value[$indexBy]; |
| 1026 | $result[$newKey] = $value; |
| 1027 | } |
| 1028 | return $result; |
| 1029 | } |
| 1030 | |
| 1031 | /** |
| 1032 | * Copy all properties of $other into $array (recursively). |
| 1033 | * |
| 1034 | * @param array|ArrayAccess $array |
| 1035 | * @param array $other |
| 1036 | */ |
| 1037 | public static function extend(&$array, $other) { |
| 1038 | foreach ($other as $key => $value) { |
| 1039 | if (is_array($value)) { |
| 1040 | self::extend($array[$key], $value); |
| 1041 | } |
| 1042 | else { |
| 1043 | $array[$key] = $value; |
| 1044 | } |
| 1045 | } |
| 1046 | } |
| 1047 | |
| 1048 | /** |
| 1049 | * Get a single value from an array-tree. |
| 1050 | * |
| 1051 | * @param array $values |
| 1052 | * Ex: ['foo' => ['bar' => 123]]. |
| 1053 | * @param array $path |
| 1054 | * Ex: ['foo', 'bar']. |
| 1055 | * @param mixed $default |
| 1056 | * @return mixed |
| 1057 | * Ex 123. |
| 1058 | */ |
| 1059 | public static function pathGet($values, $path, $default = NULL) { |
| 1060 | foreach ($path as $key) { |
| 1061 | if (!is_array($values) || !isset($values[$key])) { |
| 1062 | return $default; |
| 1063 | } |
| 1064 | $values = $values[$key]; |
| 1065 | } |
| 1066 | return $values; |
| 1067 | } |
| 1068 | |
| 1069 | /** |
| 1070 | * Check if a key isset which may be several layers deep. |
| 1071 | * |
| 1072 | * This is a helper for when the calling function does not know how many layers deep |
| 1073 | * the path array is so cannot easily check. |
| 1074 | * |
| 1075 | * @param array $values |
| 1076 | * @param array $path |
| 1077 | * @return bool |
| 1078 | */ |
| 1079 | public static function pathIsset($values, $path) { |
| 1080 | if ($path === []) { |
| 1081 | return ($values !== NULL); |
| 1082 | } |
| 1083 | foreach ($path as $key) { |
| 1084 | if (!is_array($values) || !isset($values[$key])) { |
| 1085 | return FALSE; |
| 1086 | } |
| 1087 | $values = $values[$key]; |
| 1088 | } |
| 1089 | return TRUE; |
| 1090 | } |
| 1091 | |
| 1092 | /** |
| 1093 | * Remove a key from an array. |
| 1094 | * |
| 1095 | * This is a helper for when the calling function does not know how many layers deep |
| 1096 | * the path array is so cannot easily check. |
| 1097 | * |
| 1098 | * @param array $values |
| 1099 | * @param array $path |
| 1100 | * @param bool $cleanup |
| 1101 | * If removed item leaves behind an empty array, should you remove the empty array? |
| 1102 | * @return bool |
| 1103 | * TRUE if anything has been removed. FALSE if no changes were required. |
| 1104 | */ |
| 1105 | public static function pathUnset(&$values, $path, $cleanup = FALSE) { |
| 1106 | if (count($path) === 0) { |
| 1107 | $values = NULL; |
| 1108 | return TRUE; |
| 1109 | } |
| 1110 | |
| 1111 | if (count($path) === 1) { |
| 1112 | if (isset($values[$path[0]])) { |
| 1113 | unset($values[$path[0]]); |
| 1114 | return TRUE; |
| 1115 | } |
| 1116 | else { |
| 1117 | return FALSE; |
| 1118 | } |
| 1119 | } |
| 1120 | else { |
| 1121 | $next = array_shift($path); |
| 1122 | $r = static::pathUnset($values[$next], $path, $cleanup); |
| 1123 | if ($cleanup && $values[$next] === []) { |
| 1124 | $r = TRUE; |
| 1125 | unset($values[$next]); |
| 1126 | } |
| 1127 | return $r; |
| 1128 | } |
| 1129 | } |
| 1130 | |
| 1131 | /** |
| 1132 | * Set a single value in an array tree. |
| 1133 | * |
| 1134 | * @param array $values |
| 1135 | * Ex: ['foo' => ['bar' => 123]]. |
| 1136 | * @param array $pathParts |
| 1137 | * Ex: ['foo', 'bar']. |
| 1138 | * @param $value |
| 1139 | * Ex: 456. |
| 1140 | */ |
| 1141 | public static function pathSet(&$values, $pathParts, $value) { |
| 1142 | if ($pathParts === []) { |
| 1143 | $values = $value; |
| 1144 | return; |
| 1145 | } |
| 1146 | $r = &$values; |
| 1147 | $last = array_pop($pathParts); |
| 1148 | foreach ($pathParts as $part) { |
| 1149 | if (!isset($r[$part])) { |
| 1150 | $r[$part] = []; |
| 1151 | } |
| 1152 | $r = &$r[$part]; |
| 1153 | } |
| 1154 | $r[$last] = $value; |
| 1155 | } |
| 1156 | |
| 1157 | /** |
| 1158 | * Move an item in an array-tree (if it exists). |
| 1159 | * |
| 1160 | * @param array $values |
| 1161 | * Data-tree |
| 1162 | * @param string[] $src |
| 1163 | * Old path for the existing item |
| 1164 | * @param string[] $dest |
| 1165 | * New path |
| 1166 | * @param bool $cleanup |
| 1167 | * @return int |
| 1168 | * Number of items moved (0 or 1). |
| 1169 | */ |
| 1170 | public static function pathMove(&$values, $src, $dest, $cleanup = FALSE) { |
| 1171 | if (!static::pathIsset($values, $src)) { |
| 1172 | return 0; |
| 1173 | } |
| 1174 | else { |
| 1175 | $value = static::pathGet($values, $src); |
| 1176 | static::pathSet($values, $dest, $value); |
| 1177 | static::pathUnset($values, $src, $cleanup); |
| 1178 | return 1; |
| 1179 | } |
| 1180 | } |
| 1181 | |
| 1182 | /** |
| 1183 | * Attempt to synchronize or fill aliased items. |
| 1184 | * |
| 1185 | * If $canonPath is set, copy to $altPath; or... |
| 1186 | * If $altPath is set, copy to $canonPath. |
| 1187 | * |
| 1188 | * @param array $params |
| 1189 | * Data-tree |
| 1190 | * @param string[] $canonPath |
| 1191 | * Preferred path |
| 1192 | * @param string[] $altPath |
| 1193 | * Old/alternate/deprecated path. |
| 1194 | * @param callable|null $filter |
| 1195 | * Optional function to filter the value as it passes through (canonPath=>altPath or altPath=>canonPath). |
| 1196 | * function(mixed $v, bool $isCanon): mixed |
| 1197 | */ |
| 1198 | public static function pathSync(&$params, $canonPath, $altPath, ?callable $filter = NULL) { |
| 1199 | $MISSING = new \stdClass(); |
| 1200 | |
| 1201 | $v = static::pathGet($params, $canonPath, $MISSING); |
| 1202 | if ($v !== $MISSING) { |
| 1203 | static::pathSet($params, $altPath, $filter ? $filter($v, TRUE) : $v); |
| 1204 | return; |
| 1205 | } |
| 1206 | |
| 1207 | $v = static::pathGet($params, $altPath, $MISSING); |
| 1208 | if ($v !== $MISSING) { |
| 1209 | static::pathSet($params, $canonPath, $filter ? $filter($v, FALSE) : $v); |
| 1210 | return; |
| 1211 | } |
| 1212 | } |
| 1213 | |
| 1214 | /** |
| 1215 | * Convert a simple dictionary into separate key+value records. |
| 1216 | * |
| 1217 | * @param array $array |
| 1218 | * Ex: array('foo' => 'bar'). |
| 1219 | * @param string $keyField |
| 1220 | * Ex: 'key'. |
| 1221 | * @param string $valueField |
| 1222 | * Ex: 'value'. |
| 1223 | * @return array |
| 1224 | * @deprecated |
| 1225 | */ |
| 1226 | public static function toKeyValueRows($array, $keyField = 'key', $valueField = 'value') { |
| 1227 | return self::makeNonAssociative($array, $keyField, $valueField); |
| 1228 | } |
| 1229 | |
| 1230 | /** |
| 1231 | * Convert array where key(s) holds the actual value and value(s) as 1 into array of actual values |
| 1232 | * Ex: array('foobar' => 1, 4 => 1) formatted into array('foobar', 4) |
| 1233 | * |
| 1234 | * @deprecated use convertCheckboxInputToArray instead (after testing) |
| 1235 | * https://github.com/civicrm/civicrm-core/pull/8169 |
| 1236 | * |
| 1237 | * @param array $array |
| 1238 | */ |
| 1239 | public static function formatArrayKeys(&$array) { |
| 1240 | if (!is_array($array)) { |
| 1241 | return; |
| 1242 | } |
| 1243 | $keys = array_keys($array, 1); |
| 1244 | if (count($keys) > 1 || |
| 1245 | (count($keys) == 1 && |
| 1246 | (current($keys) > 1 || |
| 1247 | is_string(current($keys)) || |
| 1248 | // handle (0 => 4), (1 => 1) |
| 1249 | (current($keys) == 1 && $array[1] == 1) |
| 1250 | ) |
| 1251 | ) |
| 1252 | ) { |
| 1253 | $array = $keys; |
| 1254 | } |
| 1255 | } |
| 1256 | |
| 1257 | /** |
| 1258 | * Convert the data format coming in from checkboxes to an array of values. |
| 1259 | * |
| 1260 | * The input format from check boxes looks like |
| 1261 | * array('value1' => 1, 'value2' => 1). This function converts those values to |
| 1262 | * array(''value1', 'value2). |
| 1263 | * |
| 1264 | * The function will only alter the array if all values are equal to 1. |
| 1265 | * |
| 1266 | * @param array $input |
| 1267 | * |
| 1268 | * @return array |
| 1269 | */ |
| 1270 | public static function convertCheckboxFormatToArray($input) { |
| 1271 | if (isset($input[0])) { |
| 1272 | return $input; |
| 1273 | } |
| 1274 | $keys = array_keys($input, 1); |
| 1275 | if ((count($keys) == count($input))) { |
| 1276 | return $keys; |
| 1277 | } |
| 1278 | return $input; |
| 1279 | } |
| 1280 | |
| 1281 | /** |
| 1282 | * Ensure that array is encoded in utf8 format. |
| 1283 | * |
| 1284 | * @param array $array |
| 1285 | * |
| 1286 | * @return array $array utf8-encoded. |
| 1287 | */ |
| 1288 | public static function encode_items($array) { |
| 1289 | foreach ($array as $key => $value) { |
| 1290 | if (is_array($value)) { |
| 1291 | $array[$key] = self::encode_items($value); |
| 1292 | } |
| 1293 | elseif (is_string($value)) { |
| 1294 | $array[$key] = mb_convert_encoding($value, mb_detect_encoding($value, mb_detect_order(), TRUE), 'UTF-8'); |
| 1295 | } |
| 1296 | else { |
| 1297 | $array[$key] = $value; |
| 1298 | } |
| 1299 | } |
| 1300 | return $array; |
| 1301 | } |
| 1302 | |
| 1303 | /** |
| 1304 | * Build tree of elements. |
| 1305 | * |
| 1306 | * @param array $elements |
| 1307 | * @param int|null $parentId |
| 1308 | * |
| 1309 | * @return array |
| 1310 | */ |
| 1311 | public static function buildTree($elements, $parentId = NULL) { |
| 1312 | $branch = []; |
| 1313 | |
| 1314 | foreach ($elements as $element) { |
| 1315 | if ($element['parent_id'] == $parentId) { |
| 1316 | $children = self::buildTree($elements, $element['id']); |
| 1317 | if ($children) { |
| 1318 | $element['children'] = $children; |
| 1319 | } |
| 1320 | $branch[] = $element; |
| 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | return $branch; |
| 1325 | } |
| 1326 | |
| 1327 | /** |
| 1328 | * Find search string in tree. |
| 1329 | * |
| 1330 | * @param string $search |
| 1331 | * @param array $tree |
| 1332 | * @param string $field |
| 1333 | * |
| 1334 | * @return array|null |
| 1335 | */ |
| 1336 | public static function findInTree($search, $tree, $field = 'id') { |
| 1337 | foreach ($tree as $item) { |
| 1338 | if ($item[$field] == $search) { |
| 1339 | return $item; |
| 1340 | } |
| 1341 | if (!empty($item['children'])) { |
| 1342 | $found = self::findInTree($search, $item['children']); |
| 1343 | if ($found) { |
| 1344 | return $found; |
| 1345 | } |
| 1346 | } |
| 1347 | } |
| 1348 | return NULL; |
| 1349 | } |
| 1350 | |
| 1351 | /** |
| 1352 | * Prepend string prefix to every key in an array |
| 1353 | * |
| 1354 | * @param array $collection |
| 1355 | * @param string $prefix |
| 1356 | * @return array |
| 1357 | */ |
| 1358 | public static function prefixKeys(array $collection, string $prefix) { |
| 1359 | $result = []; |
| 1360 | foreach ($collection as $key => $value) { |
| 1361 | $result[$prefix . $key] = $value; |
| 1362 | } |
| 1363 | return $result; |
| 1364 | } |
| 1365 | |
| 1366 | } |