| 1 |
<?php |
| 2 |
/** |
| 3 |
* Settings Library |
| 4 |
* |
| 5 |
* @namespace UsabilityDynamics |
| 6 |
*/ |
| 7 |
namespace UsabilityDynamics { |
| 8 |
|
| 9 |
if( !class_exists( 'UsabilityDynamics\Settings' ) ) { |
| 10 |
|
| 11 |
/** |
| 12 |
* Class Settings |
| 13 |
* |
| 14 |
* @package UsabilityDynamics |
| 15 |
*/ |
| 16 |
class Settings { |
| 17 |
|
| 18 |
/** |
| 19 |
* Settings Class version. |
| 20 |
* |
| 21 |
* @public |
| 22 |
* @static |
| 23 |
* @property $version |
| 24 |
* @type {Object} |
| 25 |
*/ |
| 26 |
static public $version = '0.3.0'; |
| 27 |
|
| 28 |
/** |
| 29 |
* Prefix for option keys to unique |
| 30 |
* |
| 31 |
* @var string |
| 32 |
*/ |
| 33 |
private $prefix = ''; |
| 34 |
|
| 35 |
/** |
| 36 |
* Whether or not to hash option keys before saving |
| 37 |
* |
| 38 |
* @var bool |
| 39 |
*/ |
| 40 |
private $hash_keys = false; |
| 41 |
|
| 42 |
/** |
| 43 |
* Data storage |
| 44 |
* |
| 45 |
* @var array |
| 46 |
*/ |
| 47 |
private $_data = array(); |
| 48 |
|
| 49 |
/** |
| 50 |
* Settings Schema. |
| 51 |
* |
| 52 |
* @static |
| 53 |
* @property $_schema |
| 54 |
* @type {Object} |
| 55 |
*/ |
| 56 |
private $_schema = false; |
| 57 |
|
| 58 |
/** |
| 59 |
* Settings Namespace. |
| 60 |
* |
| 61 |
* @static |
| 62 |
* @property $_namespace |
| 63 |
* @type {String} |
| 64 |
*/ |
| 65 |
private $_namespace = false; |
| 66 |
|
| 67 |
/** |
| 68 |
* Storage Key. |
| 69 |
* |
| 70 |
* @static |
| 71 |
* @property $_key |
| 72 |
* @type {String} |
| 73 |
*/ |
| 74 |
private $_key = false; |
| 75 |
|
| 76 |
/** |
| 77 |
* Settings Format. |
| 78 |
* |
| 79 |
* Options are: 'json', 'object', 'array', 'hash-map'. |
| 80 |
* |
| 81 |
* @static |
| 82 |
* @property $_format |
| 83 |
* @type {String} |
| 84 |
*/ |
| 85 |
private $_format = null; |
| 86 |
|
| 87 |
/** |
| 88 |
* Storage Location |
| 89 |
* |
| 90 |
* @static |
| 91 |
* @property $_store |
| 92 |
* @type {String} |
| 93 |
*/ |
| 94 |
private $_store = false; |
| 95 |
|
| 96 |
/** |
| 97 |
* For transient storage. |
| 98 |
* |
| 99 |
* @static |
| 100 |
* @property $_expiration |
| 101 |
* @type {String} |
| 102 |
*/ |
| 103 |
private $_expiration = 60; |
| 104 |
|
| 105 |
/** |
| 106 |
* Toggle Debugger. |
| 107 |
* |
| 108 |
* @static |
| 109 |
* @property $_debug |
| 110 |
* @type {Boolean} |
| 111 |
*/ |
| 112 |
private $_debug = false; |
| 113 |
|
| 114 |
/** |
| 115 |
* Automatically Save. |
| 116 |
* |
| 117 |
* @static |
| 118 |
* @property $_debug |
| 119 |
* @type {Boolean} |
| 120 |
*/ |
| 121 |
private $auto_commit = false; |
| 122 |
|
| 123 |
/** |
| 124 |
* Instance Valid. |
| 125 |
* |
| 126 |
* @static |
| 127 |
* @property $is_valid |
| 128 |
* @type {Boolean} |
| 129 |
*/ |
| 130 |
public $is_valid = true; |
| 131 |
|
| 132 |
/** |
| 133 |
* Constructor |
| 134 |
* |
| 135 |
* @param bool $args |
| 136 |
* |
| 137 |
* @example |
| 138 |
* |
| 139 |
* $_settings = new Settings(array( |
| 140 |
* "store" => "options" |
| 141 |
* )); |
| 142 |
* |
| 143 |
* $_settings->set( 'my.key', 'my.value' ); |
| 144 |
* |
| 145 |
* @internal param \UsabilityDynamics\type $defaults |
| 146 |
* @internal param bool|\UsabilityDynamics\type $force_save |
| 147 |
* @internal param string|\UsabilityDynamics\type $prefix |
| 148 |
* @internal param bool|\UsabilityDynamics\type $hash_keys |
| 149 |
*/ |
| 150 |
public function __construct( $args = false ) { |
| 151 |
|
| 152 |
$args = Utility::parse_args( $args, array( |
| 153 |
'namespace' => '', |
| 154 |
'key' => '', |
| 155 |
'auto_commit' => false, |
| 156 |
'debug' => false, |
| 157 |
'store' => false, |
| 158 |
'schema' => false, |
| 159 |
'format' => false, |
| 160 |
'data' => null |
| 161 |
)); |
| 162 |
|
| 163 |
// Load Schema. |
| 164 |
if( isset( $args->schema ) && $args->schema ) { |
| 165 |
$this->set_schema( $args->schema ); |
| 166 |
} |
| 167 |
|
| 168 |
// Set Storage Location(s). |
| 169 |
if( isset( $args->store ) && $args->store ) { |
| 170 |
$this->_store = $args->store; |
| 171 |
} |
| 172 |
|
| 173 |
// Set Storage Key. |
| 174 |
if( isset( $args->key ) && $args->key ) { |
| 175 |
$this->_key = $args->key; |
| 176 |
} |
| 177 |
|
| 178 |
// Set transient vxpiration value. |
| 179 |
if( isset( $args->expiration ) && $args->expiration ) { |
| 180 |
$this->_expiration = $args->expiration; |
| 181 |
} |
| 182 |
|
| 183 |
// Set Format to enforce. |
| 184 |
if( $args->format ) { |
| 185 |
$this->_format = $args->format; |
| 186 |
} |
| 187 |
// Toggle Debugger. |
| 188 |
if( $args->debug ) { |
| 189 |
$this->_debug = $args->debug; |
| 190 |
} |
| 191 |
|
| 192 |
// Set Settings Namespace. |
| 193 |
if( $args->namespace ) { |
| 194 |
$this->_namespace = $args->namespace; |
| 195 |
} |
| 196 |
|
| 197 |
// Set Auto Commit. |
| 198 |
if( $args->auto_commit ) { |
| 199 |
$this->auto_commit = $args->auto_commit; |
| 200 |
} |
| 201 |
|
| 202 |
// Load Initial. |
| 203 |
$this->_load(); |
| 204 |
|
| 205 |
// Set Initial Data. |
| 206 |
if( $args->data ) { |
| 207 |
$this->set( $args->data ); |
| 208 |
} |
| 209 |
|
| 210 |
} |
| 211 |
|
| 212 |
/** |
| 213 |
* Getter for options |
| 214 |
* |
| 215 |
* @param bool|\UsabilityDynamics\type $key |
| 216 |
* |
| 217 |
* @param bool $default |
| 218 |
* |
| 219 |
* @return type |
| 220 |
*/ |
| 221 |
public function get( $key = false, $default = false ) { |
| 222 |
|
| 223 |
// Return all data. |
| 224 |
if( !$key ) { |
| 225 |
return $this->_output( $this->_data ); |
| 226 |
} |
| 227 |
|
| 228 |
// Resolve dot-notated key. |
| 229 |
if( strpos( $key, '.' ) ) { |
| 230 |
return $this->_resolve( $this->_data, $key, $default ); |
| 231 |
} |
| 232 |
|
| 233 |
// Return value or default. |
| 234 |
return isset( $this->_data[ $key ] ) ? $this->_data[ $key ] : $default; |
| 235 |
|
| 236 |
} |
| 237 |
|
| 238 |
/** |
| 239 |
* Setter for options |
| 240 |
* |
| 241 |
* @param string|\UsabilityDynamics\type $key |
| 242 |
* @param bool|\UsabilityDynamics\type $value |
| 243 |
* @param bool $bypass_validation |
| 244 |
* |
| 245 |
* @internal param bool|\UsabilityDynamics\type $force_save |
| 246 |
* |
| 247 |
* @return \UsabilityDynamics\Settings |
| 248 |
*/ |
| 249 |
public function set( $key = '', $value = false, $bypass_validation = false ) { |
| 250 |
|
| 251 |
if( !$this->_data ) { |
| 252 |
$this->_data = array(); |
| 253 |
} |
| 254 |
|
| 255 |
// First argument is an object/array. |
| 256 |
if( Utility::get_type( $key ) === 'object' || Utility::get_type( $key ) === 'array' || Utility::get_type( $key ) === 'stdClass' ) { |
| 257 |
|
| 258 |
// Conver to array so merge can be done |
| 259 |
$this->_data = Utility::extend( (array) $this->_data, (array) $key ); |
| 260 |
|
| 261 |
} |
| 262 |
|
| 263 |
// Standard key & value pair |
| 264 |
if( Utility::get_type( $key ) === 'string' && ( Utility::get_type( $value ) === 'string' || Utility::get_type( $value ) ==='integer' || Utility::get_type($value) === 'float' || Utility::get_type( $value ) === 'boolean' ) ) { |
| 265 |
|
| 266 |
if( strpos( $key, '.' ) ) { |
| 267 |
self::set_val( $this->_data, $key, $value ); |
| 268 |
} else { |
| 269 |
$this->_data[ $key ] = $value; |
| 270 |
} |
| 271 |
|
| 272 |
} |
| 273 |
|
| 274 |
// Standard key with complex value. |
| 275 |
if( Utility::get_type( $key ) === 'string' ) { |
| 276 |
|
| 277 |
|
| 278 |
if( Utility::get_type( $value ) === 'object' || Utility::get_type( $value ) === 'stdClass' ) { |
| 279 |
|
| 280 |
if( strpos( $key, '.' ) ) { |
| 281 |
self::set_val( $this->_data, $key, $value ); |
| 282 |
} else { |
| 283 |
|
| 284 |
if( isset( $this->_data[ $key ] ) && Utility::get_type( $this->_data[ $key ] ) === 'object' ) { |
| 285 |
$this->_data[ $key ] = Utility::extend( $this->_data[ $key ], $value ); |
| 286 |
} else { |
| 287 |
$this->_data[ $key ] = $value; |
| 288 |
} |
| 289 |
|
| 290 |
} |
| 291 |
|
| 292 |
} |
| 293 |
|
| 294 |
// Standard key with array value |
| 295 |
if( Utility::get_type( $value ) === 'array' ) { |
| 296 |
|
| 297 |
if( strpos( $key, '.' ) ) { |
| 298 |
self::set_val( $this->_data, $key, $value ); |
| 299 |
} else { |
| 300 |
$this->_data[ $key ] = array_unique( array_merge( isset( $this->_data[ $key ] ) ? (array) $this->_data[ $key ] : array(), $value ), SORT_REGULAR ); |
| 301 |
} |
| 302 |
|
| 303 |
} |
| 304 |
|
| 305 |
} |
| 306 |
|
| 307 |
// Validate if we have a schema. |
| 308 |
if( $this->_schema ) { |
| 309 |
// $this->_validate(); |
| 310 |
} |
| 311 |
|
| 312 |
// Commit to Storage if validation passed. |
| 313 |
if( $this->is_valid && $this->auto_commit ) { |
| 314 |
$this->commit(); |
| 315 |
} |
| 316 |
|
| 317 |
return $this; |
| 318 |
|
| 319 |
} |
| 320 |
|
| 321 |
/** |
| 322 |
* Handle File Transfer for downloading |
| 323 |
* |
| 324 |
* @param array $args |
| 325 |
* |
| 326 |
* @return bool |
| 327 |
*/ |
| 328 |
public function file_transfer( $args = array() ) { |
| 329 |
|
| 330 |
$args = Utility::parse_args( $args, array( |
| 331 |
"name" => "settings", |
| 332 |
"format" => "json", |
| 333 |
"cache" => 'public', |
| 334 |
"filename" => null, |
| 335 |
"charset" => 'utf8' |
| 336 |
) ); |
| 337 |
|
| 338 |
$args->filename = $args->filename ? $args->filename : $args->name . '-' . date( 'Y-m-d' ) . '.' . $args->format; |
| 339 |
|
| 340 |
// Ensure headers have not been sent. |
| 341 |
if( headers_sent() ) { |
| 342 |
return false; |
| 343 |
} |
| 344 |
|
| 345 |
// Send headers. |
| 346 |
header( "Cache-Control: {$args->cache}" ); |
| 347 |
header( "Content-Disposition: attachment; filename={$args->filename}" ); |
| 348 |
header( "Content-Type: text/plain; charset={$args->charset}" ); |
| 349 |
header( "Content-Description: File Transfer" ); |
| 350 |
header( "Content-Transfer-Encoding: binary" ); |
| 351 |
|
| 352 |
// Prepare in needed format. |
| 353 |
$_data = $this->_output( $this->get(), $args->format ); |
| 354 |
|
| 355 |
// Write data. |
| 356 |
die( $_data ); |
| 357 |
|
| 358 |
} |
| 359 |
|
| 360 |
/** |
| 361 |
* Set Schema from a string or objct. |
| 362 |
* |
| 363 |
* @param bool $schema |
| 364 |
* |
| 365 |
* @return array|bool|mixed|object |
| 366 |
*/ |
| 367 |
public function set_schema( $schema = false ) { |
| 368 |
|
| 369 |
try { |
| 370 |
|
| 371 |
// Take schema as given. |
| 372 |
if( gettype( $schema ) === 'array' ) { |
| 373 |
$this->_schema = (object) $schema; |
| 374 |
} |
| 375 |
|
| 376 |
// Take schema as given. |
| 377 |
if( gettype( $schema ) === 'object' ) { |
| 378 |
$this->_schema = $schema; |
| 379 |
} |
| 380 |
|
| 381 |
// Load schema from a file. |
| 382 |
if( gettype( $schema ) === 'string' && is_file( $schema ) ) { |
| 383 |
$this->_schema = json_decode( file_get_contents( $schema ) ); |
| 384 |
} |
| 385 |
|
| 386 |
} catch( \Exception $error ) { |
| 387 |
$this->_console( 'Caught exception: ' . $error->getMessage() ); |
| 388 |
} |
| 389 |
|
| 390 |
return $this->_schema ? $this->_schema : false; |
| 391 |
|
| 392 |
} |
| 393 |
|
| 394 |
/** |
| 395 |
* Commit Settings to Storage. |
| 396 |
* |
| 397 |
* * site_options - For WordPress, falls back to option if not in multisite. |
| 398 |
* * options - For WordPress, stores in blog options. |
| 399 |
* |
| 400 |
* @author potanin@UD |
| 401 |
* @method commit |
| 402 |
*/ |
| 403 |
public function commit() { |
| 404 |
|
| 405 |
$_data = $this->_data; |
| 406 |
|
| 407 |
// Exclude protected keys. |
| 408 |
foreach( (array) $_data as $key => $value ) { |
| 409 |
|
| 410 |
if( substr( $key, 0, 2 ) === '__' ) { |
| 411 |
unset( $_data[ $key ] ); |
| 412 |
} |
| 413 |
|
| 414 |
} |
| 415 |
|
| 416 |
switch( $this->_store ) { |
| 417 |
|
| 418 |
case 'transient': |
| 419 |
$_value = json_encode( $_data, JSON_FORCE_OBJECT ); |
| 420 |
|
| 421 |
if( function_exists( 'set_transient' ) ) { |
| 422 |
$_value = set_transient( $this->_key, $_value, $this->_expiration ); |
| 423 |
} |
| 424 |
|
| 425 |
break; |
| 426 |
|
| 427 |
case 'site_transient': |
| 428 |
|
| 429 |
$_value = json_encode( $_data, JSON_FORCE_OBJECT ); |
| 430 |
|
| 431 |
if( function_exists( 'set_site_transient' ) ) { |
| 432 |
$_value = set_site_transient( $this->_key, $_value, $this->_expiration ); |
| 433 |
} |
| 434 |
|
| 435 |
break; |
| 436 |
|
| 437 |
case 'site_options': |
| 438 |
|
| 439 |
|
| 440 |
if( function_exists( 'update_site_option' ) ) { |
| 441 |
$_value = update_site_option( $this->_key, $_data ); |
| 442 |
} |
| 443 |
|
| 444 |
break; |
| 445 |
|
| 446 |
case 'options': |
| 447 |
|
| 448 |
if( function_exists( 'update_option' ) ) { |
| 449 |
$_value = update_option( $this->_key, $_data ); |
| 450 |
} |
| 451 |
|
| 452 |
break; |
| 453 |
|
| 454 |
} |
| 455 |
|
| 456 |
return $this; |
| 457 |
|
| 458 |
} |
| 459 |
|
| 460 |
/** |
| 461 |
* Remove Stored Settings |
| 462 |
* |
| 463 |
* @example |
| 464 |
* |
| 465 |
* $settings->flush(); |
| 466 |
* |
| 467 |
* @return $this |
| 468 |
*/ |
| 469 |
public function flush($db = true, $key = null) { |
| 470 |
|
| 471 |
if($db == true){ |
| 472 |
switch( $this->_store ) { |
| 473 |
case 'options': |
| 474 |
if( function_exists( 'delete_option' ) ) { |
| 475 |
delete_option( $this->_key ); |
| 476 |
} |
| 477 |
case 'site_options': |
| 478 |
if( function_exists( 'delete_site_option' ) ) { |
| 479 |
delete_option( $this->_key ); |
| 480 |
} |
| 481 |
break; |
| 482 |
|
| 483 |
} |
| 484 |
} |
| 485 |
|
| 486 |
if($key){ |
| 487 |
if(isset($this->_data[$key])){ |
| 488 |
unset($this->_data[$key]); |
| 489 |
} |
| 490 |
} |
| 491 |
else{ |
| 492 |
$this->_data = []; |
| 493 |
} |
| 494 |
|
| 495 |
|
| 496 |
return $this; |
| 497 |
|
| 498 |
} |
| 499 |
/** |
| 500 |
* Validate Settings against Schema |
| 501 |
* |
| 502 |
*/ |
| 503 |
public function _validate() { |
| 504 |
|
| 505 |
if( !class_exists( 'JsonSchema\Validator' ) ) { |
| 506 |
return; |
| 507 |
} |
| 508 |
|
| 509 |
$validator = new \JsonSchema\Validator(); |
| 510 |
|
| 511 |
// Process Validation. |
| 512 |
$validator->check( $this->_data, $this->_schema ); |
| 513 |
|
| 514 |
if( $validator->isValid() ) { |
| 515 |
$this->is_valid = true; |
| 516 |
$this->_console( "The supplied JSON validates against the schema." ); |
| 517 |
} else { |
| 518 |
$this->is_valid = false; |
| 519 |
|
| 520 |
$this->_console( "JSON does not validate. Violations:" ); |
| 521 |
|
| 522 |
foreach( $validator->getErrors() as $error ) { |
| 523 |
$this->_console( sprintf( "[%s] %s\n", $error[ 'property' ], $error[ 'message' ] ) ); |
| 524 |
} |
| 525 |
|
| 526 |
} |
| 527 |
|
| 528 |
} |
| 529 |
|
| 530 |
/** |
| 531 |
* Library Debugger |
| 532 |
* |
| 533 |
* @param $data |
| 534 |
*/ |
| 535 |
public function _console( $data ) { |
| 536 |
|
| 537 |
if( $this->_debug ) { |
| 538 |
echo sprintf( "lib-settings debug: [%s].", $data ); |
| 539 |
} |
| 540 |
|
| 541 |
} |
| 542 |
|
| 543 |
/** |
| 544 |
* Load options from DB |
| 545 |
* |
| 546 |
* @return \UsabilityDynamics\Settings |
| 547 |
*/ |
| 548 |
public function _load() { |
| 549 |
|
| 550 |
switch( $this->_store ) { |
| 551 |
|
| 552 |
// WordPress Site Options. |
| 553 |
case 'options': |
| 554 |
case 'site_options': |
| 555 |
|
| 556 |
// Load from options. |
| 557 |
if( $this->_store == 'site_options' ) { |
| 558 |
$_value = \get_site_option( $this->_key ); |
| 559 |
} else { |
| 560 |
$_value = \get_option( $this->_key ); |
| 561 |
} |
| 562 |
|
| 563 |
// If already an array it must have been serialized |
| 564 |
if( gettype( $_value ) === 'array' ) { |
| 565 |
return $this->_output( $this->_data = $_value ); |
| 566 |
} |
| 567 |
|
| 568 |
try { |
| 569 |
|
| 570 |
$_value = json_decode( $_value, true ); |
| 571 |
|
| 572 |
} catch( \Exception $error ) { |
| 573 |
$this->_console( 'Caught exception: ' . $error->getMessage() ); |
| 574 |
} |
| 575 |
|
| 576 |
$this->_data = $_value; |
| 577 |
|
| 578 |
break; |
| 579 |
|
| 580 |
default: |
| 581 |
|
| 582 |
break; |
| 583 |
|
| 584 |
} |
| 585 |
|
| 586 |
return $this->_data; |
| 587 |
|
| 588 |
} |
| 589 |
|
| 590 |
/** |
| 591 |
* Prepare Data for Output |
| 592 |
* |
| 593 |
* @param $data |
| 594 |
* |
| 595 |
* @param bool $format |
| 596 |
* |
| 597 |
* @return array|mixed|string|void |
| 598 |
*/ |
| 599 |
public function _output( $data, $format = false ) { |
| 600 |
|
| 601 |
$format = $format ? $format : $this->_format; |
| 602 |
|
| 603 |
// Stringify. |
| 604 |
if( $format === 'json' ) { |
| 605 |
return json_encode( $data ); |
| 606 |
} |
| 607 |
|
| 608 |
// Deeep Object. |
| 609 |
if( $format === 'object' ) { |
| 610 |
return json_decode( json_encode( $data ) ); |
| 611 |
} |
| 612 |
|
| 613 |
return $data; |
| 614 |
|
| 615 |
} |
| 616 |
|
| 617 |
/** |
| 618 |
* @param array $arr |
| 619 |
* @param $path |
| 620 |
* @param $val |
| 621 |
* |
| 622 |
* @return mixed |
| 623 |
*/ |
| 624 |
public function set_val( array &$arr, $path, $val ) { |
| 625 |
$loc = & $arr; |
| 626 |
|
| 627 |
foreach( explode( '.', $path ) as $step ) { |
| 628 |
$loc = & $loc[ $step ]; |
| 629 |
} |
| 630 |
|
| 631 |
return $loc = $val; |
| 632 |
|
| 633 |
} |
| 634 |
|
| 635 |
/** |
| 636 |
* Expand Array |
| 637 |
* @source http://stackoverflow.com/questions/17365059/how-to-unflatten-array-in-php-using-dot-notation |
| 638 |
* |
| 639 |
* @param $array |
| 640 |
* @param int $level |
| 641 |
* |
| 642 |
* @return array |
| 643 |
*/ |
| 644 |
public function _expand( $array, $level = 0 ) { |
| 645 |
$result = array(); |
| 646 |
$next = $level + 1; |
| 647 |
|
| 648 |
foreach( $array as $key => $value ) { |
| 649 |
$tree = explode( '.', $key ); |
| 650 |
|
| 651 |
if( isset( $tree[ $level ] ) ) { |
| 652 |
if( !isset( $tree[ $next ] ) ) { |
| 653 |
$result[ $tree[ $level ] ][ 'id' ] = $key; |
| 654 |
$result[ $tree[ $level ] ][ 'title' ] = $value; |
| 655 |
if( !isset( $result[ $tree[ $level ] ][ 'children' ] ) ) { |
| 656 |
$result[ $tree[ $level ] ][ 'children' ] = array(); |
| 657 |
} |
| 658 |
} else { |
| 659 |
if( isset( $result[ $tree[ $level ] ][ 'children' ] ) ) { |
| 660 |
$result[ $tree[ $level ] ][ 'children' ] = array_merge_recursive( $result[ $tree[ $level ] ][ 'children' ], self::_expand( array( $key => $value ), $next ) ); |
| 661 |
} else { |
| 662 |
$result[ $tree[ $level ] ][ 'children' ] = self::_expand( array( $key => $value ), $next ); |
| 663 |
} |
| 664 |
} |
| 665 |
|
| 666 |
} |
| 667 |
} |
| 668 |
|
| 669 |
return $result; |
| 670 |
|
| 671 |
} |
| 672 |
|
| 673 |
/** |
| 674 |
* Resolve dot-notated key. |
| 675 |
* |
| 676 |
* @source http://stackoverflow.com/questions/14704984/best-way-for-dot-notation-access-to-multidimensional-array-in-php |
| 677 |
* |
| 678 |
* @param $a |
| 679 |
* @param $path |
| 680 |
* @param null $default |
| 681 |
* |
| 682 |
* @internal param array $a |
| 683 |
* @return array|null |
| 684 |
*/ |
| 685 |
public function _resolve( $a, $path, $default = null ) { |
| 686 |
|
| 687 |
$current = $a; |
| 688 |
$p = strtok( $path, '.' ); |
| 689 |
|
| 690 |
while( $p !== false ) { |
| 691 |
|
| 692 |
if( !isset( $current[ $p ] ) ) { |
| 693 |
return $default; |
| 694 |
} |
| 695 |
|
| 696 |
$current = $current[ $p ]; |
| 697 |
$p = strtok( '.' ); |
| 698 |
|
| 699 |
} |
| 700 |
|
| 701 |
return $current; |
| 702 |
|
| 703 |
} |
| 704 |
|
| 705 |
} |
| 706 |
|
| 707 |
} |
| 708 |
|
| 709 |
} |
