| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * Copyright (c) 2016-present Ganbaro Digital Ltd | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * All rights reserved. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * Redistribution and use in source and binary forms, with or without | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * modification, are permitted provided that the following conditions | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * are met: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  *   * Redistributions of source code must retain the above copyright | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  *     notice, this list of conditions and the following disclaimer. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  *   * Redistributions in binary form must reproduce the above copyright | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  *     notice, this list of conditions and the following disclaimer in | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  *     the documentation and/or other materials provided with the | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  *     distribution. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  *   * Neither the names of the copyright holders nor the names of his | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |  *     contributors may be used to endorse or promote products derived | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  *     from this software without specific prior written permission. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |  * POSSIBILITY OF SUCH DAMAGE. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |  * @category  Libraries | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  * @package   MissingBits/ArrayFunctions | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |  * @author    Stuart Herbert <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |  * @copyright 2016-present Ganbaro Digital Ltd www.ganbarodigital.com | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |  * @license   http://www.opensource.org/licenses/bsd-license.php  BSD License | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |  * @link      http://ganbarodigital.github.io/php-the-missing-bits | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |  * append one array to another, ignoring the array keys in $extra | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |  * added because of the observed performance problems with array_merge() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |  * at scale | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |  * @param  array $target | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |  *         the array to append to | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |  * @param  array $extra | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |  *         the array that we want to append | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |  * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |  *         the combined array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | function array_append_values(array $target, array $extra) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |     $retval = $target; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |     foreach ($extra as $value) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |         $retval[] = $value; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |     // all done | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |     return $retval; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  |  * append one array to another, respecting the array keys in $extra | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  |  * added because of the observed performance problems with array_merge() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  |  * at scale | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |  * @param  array $target | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  |  *         the array to merge into | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |  * @param  array $extra | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  |  *         the array that we want to merge with $target | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  |  * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |  *         the combined array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | function array_merge_keys($target, $extra) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  |     $retval = $target; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |     foreach ($extra as $key => $value) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |         $retval[$key] = $value; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |     // all done | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |     return $retval; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |  * build a subset of an array, that only consists of content that has | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |  * been explicitly whitelisted | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |  * we only keep: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  |  * - keys in $target | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |  * - that have a corresponding filter in $filterMap | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |  * - where the corresponding filter: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |  *   - is `true` | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |  *   - or is a `callable` | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |  * we support child arrays, with corresponding child array filters | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |  * @param  array $target | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  |  *         the array we want to filter | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |  * @param  array $filterMap | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |  *         list of whitelisted fields | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |  * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |  *         the resulting filtered array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | function array_whitelist(array $target, array $filterMap) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  |     // step 1: drop all filters that are FALSE | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |     // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |     // it's a thing, what can I say? | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |     $filterMap = array_filter($filterMap); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |     // step 2: first pass at fields that are whitelisted | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |     // | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  |     // with simple filterMaps, this will do all the work | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  |     $retval = array_intersect_key($target, $filterMap); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  |     // step 3: apply remaining filters | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  |     foreach ($filterMap as $key => $filter) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |         switch(true) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |             case is_callable($filter): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  |                 $retval[$key] = $filter($retval); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  |                 break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |             // support for n-depth filters | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  |             case isset($retval[$key]) && is_array($filter) && (is_array($retval[$key]) || is_object($retval[$key])): | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  |                 $retval[$key] = array_whitelist($retval[$key], $filter); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |                 break; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |         // var_dump($key, $filter, $retval, $target); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  |     return $retval; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  | } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  | function array_filter_contents(array $target, array $filterMap) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  |     $retval = $target; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  |     foreach ($filterMap as $key => $filter) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |         // nothing needs doing | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |         if (!isset($retval[$key]) || $filter === true) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  |             continue; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |         // we want to remove this field | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  |         if ($filter === false) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  |             unset($retval[$key]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |             continue; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  |         if (is_callable($filter)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  |             $retval[$key] = $filter($retval); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  |             continue; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  |         if (is_array($retval[$key]) && is_array($filter)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |             $retval[$key] = array_filter_contents($retval[$key], $filter); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  |     return $retval; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  | } | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 171 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 172 |  |  | function array_quote(array $data, string $separator = ',', string $quote = '"') | 
            
                                                        
            
                                    
            
            
                | 173 |  |  | { | 
            
                                                        
            
                                    
            
            
                | 174 |  |  |     return $quote . implode($quote . $separator . $quote, $data) . $quote; | 
            
                                                        
            
                                    
            
            
                | 175 |  |  | } | 
            
                        
Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it.
The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production.
This check looks for comments that seem to be mostly valid code and reports them.