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<?php <?php /** * This file is part of the array_column library * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. * * @copyright Copyright (c) 2013 Ben Ramsey <http://benramsey.com> * @license http://opensource.org/licenses/MIT MIT */ if (!function_exists('array_column')) { /** * Returns the values from a single column of the input array, identified by * the $columnKey. * * Optionally, you may provide an $indexKey to index the values in the returned * array by the values from the $indexKey column in the input array. * * @param array $input A multi-dimensional array (record set) from which to pull * a column of values. * @param mixed $columnKey The column of values to return. This value may be the * integer key of the column you wish to retrieve, or it * may be the string key name for an associative array. * @param mixed $indexKey (Optional.) The column to use as the index/keys for * the returned array. This value may be the integer key * of the column, or it may be the string key name. * @return array */ function array_column($input = null, $columnKey = null, $indexKey = null) { // Using func_get_args() in order to check for proper number of // parameters and trigger errors exactly as the built-in array_column() // does in PHP 5.5. $params = func_get_args(); if (!isset($params[0])) { trigger_error('array_column() expects at least 2 parameters, 0 given', E_USER_WARNING); return null; } elseif (!isset($params[1])) { trigger_error('array_column() expects at least 2 parameters, 1 given', E_USER_WARNING); return null; } if (!is_array($params[0])) { trigger_error('array_column() expects parameter 1 to be array, ' . gettype($params[0]) . ' given', E_USER_WARNING); return null; } if (!is_int($params[1]) && !is_string($params[1]) && !(is_object($params[1]) && method_exists($params[1], '__toString')) ) { trigger_error('array_column(): The column key should be either a string or an integer', E_USER_WARNING); return false; } if (isset($params[2]) && !is_int($params[2]) && !is_string($params[2]) && !(is_object($params[2]) && method_exists($params[2], '__toString')) ) { trigger_error('array_column(): The index key should be either a string or an integer', E_USER_WARNING); return false; } $paramsInput = $params[0]; $paramsColumnKey = (string) $params[1]; $paramsIndexKey = (isset($params[2]) ? (string) $params[2] : null); $resultArray = array(); foreach ($paramsInput as $row) { $key = $value = null; $keySet = $valueSet = false; if ($paramsIndexKey !== null && array_key_exists($paramsIndexKey, $row)) { $keySet = true; $key = $row[$paramsIndexKey]; } if (is_array($row) && array_key_exists($paramsColumnKey, $row)) { $valueSet = true; $value = $row[$paramsColumnKey]; } if ($valueSet) { if ($keySet) { $resultArray[$key] = $value; } else { $resultArray[] = $value; } } } return $resultArray; } } $records = array( array( 'id' => 2135, 'first_name' => 'John', 'last_name' => 'Doe' ), array( 'id' => 3245, 'first_name' => 'Sally', 'last_name' => 'Smith' ), array( 'id' => 5342, 'first_name' => 'Jane', 'last_name' => 'Jones' ), array( 'id' => 5623, 'first_name' => 'Peter', 'last_name' => 'Doe' ) ); $lastNames = array_column($records, 'last_name', 'id'); var_dump($lastNames);
Output for 5.3.0 - 5.4.13
Parse error: syntax error, unexpected '<' in /in/3Bdbj on line 3
Process exited with code 255.