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- <?php
- /*
- * Copyright (c) 2013 Ben Ramsey <http://benramsey.com>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
- namespace Symfony\Polyfill\Php55;
- /**
- * @internal
- */
- final class Php55ArrayColumn
- {
- public static function array_column(array $input, $columnKey, $indexKey = null)
- {
- $output = array();
- foreach ($input as $row) {
- $key = $value = null;
- $keySet = $valueSet = false;
- if ($indexKey !== null && array_key_exists($indexKey, $row)) {
- $keySet = true;
- $key = (string) $row[$indexKey];
- }
- if ($columnKey === null) {
- $valueSet = true;
- $value = $row;
- } elseif (is_array($row) && array_key_exists($columnKey, $row)) {
- $valueSet = true;
- $value = $row[$columnKey];
- }
- if ($valueSet) {
- if ($keySet) {
- $output[$key] = $value;
- } else {
- $output[] = $value;
- }
- }
- }
- return $output;
- }
- }
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