www/plugins/spip-bonux-3/lib/array_column/array_column.php

   1 <?php
   2 /**
   3  * This file is part of the array_column library
   4  *
   5  * For the full copyright and license information, please view the LICENSE
   6  * file that was distributed with this source code.
   7  *
   8  * @copyright Copyright (c) Ben Ramsey (http://benramsey.com)
   9  * @license http://opensource.org/licenses/MIT MIT
  10  */
  11
  12 if (!function_exists('array_column')) {
  13     /**
  14      * Returns the values from a single column of the input array, identified by
  15      * the $columnKey.
  16      *
  17      * Optionally, you may provide an $indexKey to index the values in the returned
  18      * array by the values from the $indexKey column in the input array.
  19      *
  20      * @param array $input A multi-dimensional array (record set) from which to pull
  21      *                     a column of values.
  22      * @param mixed $columnKey The column of values to return. This value may be the
  23      *                         integer key of the column you wish to retrieve, or it
  24      *                         may be the string key name for an associative array.
  25      * @param mixed $indexKey (Optional.) The column to use as the index/keys for
  26      *                        the returned array. This value may be the integer key
  27      *                        of the column, or it may be the string key name.
  28      * @return array
  29      */
  30     function array_column($input = null, $columnKey = null, $indexKey = null)
  31     {
  32         // Using func_get_args() in order to check for proper number of
  33         // parameters and trigger errors exactly as the built-in array_column()
  34         // does in PHP 5.5.
  35         $argc = func_num_args();
  36         $params = func_get_args();
  37
  38         if ($argc < 2) {
  39             trigger_error("array_column() expects at least 2 parameters, {$argc} given", E_USER_WARNING);
  40             return null;
  41         }
  42
  43         if (!is_array($params[0])) {
  44             trigger_error(
  45                 'array_column() expects parameter 1 to be array, ' . gettype($params[0]) . ' given',
  46                 E_USER_WARNING
  47             );
  48             return null;
  49         }
  50
  51         if (!is_int($params[1])
  52             && !is_float($params[1])
  53             && !is_string($params[1])
  54             && $params[1] !== null
  55             && !(is_object($params[1]) && method_exists($params[1], '__toString'))
  56         ) {
  57             trigger_error('array_column(): The column key should be either a string or an integer', E_USER_WARNING);
  58             return false;
  59         }
  60
  61         if (isset($params[2])
  62             && !is_int($params[2])
  63             && !is_float($params[2])
  64             && !is_string($params[2])
  65             && !(is_object($params[2]) && method_exists($params[2], '__toString'))
  66         ) {
  67             trigger_error('array_column(): The index key should be either a string or an integer', E_USER_WARNING);
  68             return false;
  69         }
  70
  71         $paramsInput = $params[0];
  72         $paramsColumnKey = ($params[1] !== null) ? (string) $params[1] : null;
  73
  74         $paramsIndexKey = null;
  75         if (isset($params[2])) {
  76             if (is_float($params[2]) || is_int($params[2])) {
  77                 $paramsIndexKey = (int) $params[2];
  78             } else {
  79                 $paramsIndexKey = (string) $params[2];
  80             }
  81         }
  82
  83         $resultArray = array();
  84
  85         foreach ($paramsInput as $row) {
  86             $key = $value = null;
  87             $keySet = $valueSet = false;
  88
  89             if ($paramsIndexKey !== null && array_key_exists($paramsIndexKey, $row)) {
  90                 $keySet = true;
  91                 $key = (string) $row[$paramsIndexKey];
  92             }
  93
  94             if ($paramsColumnKey === null) {
  95                 $valueSet = true;
  96                 $value = $row;
  97             } elseif (is_array($row) && array_key_exists($paramsColumnKey, $row)) {
  98                 $valueSet = true;
  99                 $value = $row[$paramsColumnKey];
 100             }
 101
 102             if ($valueSet) {
 103                 if ($keySet) {
 104                     $resultArray[$key] = $value;
 105                 } else {
 106                     $resultArray[] = $value;
 107                 }
 108             }
 109
 110         }
 111
 112         return $resultArray;
 113     }
 114
 115 }