| Total Complexity | 92 |
| Total Lines | 533 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like ArrayHelper often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use ArrayHelper, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 19 | class ArrayHelper extends \yii\helpers\ArrayHelper |
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| 20 | { |
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| 21 | /** |
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| 22 | * 判断给定的值是否是可访问的数组 |
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| 23 | * |
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| 24 | * @param mixed $value |
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| 25 | * @return bool |
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| 26 | */ |
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| 27 | public static function accessible($value): bool |
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| 28 | { |
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| 29 | return is_array($value) || $value instanceof ArrayAccess; |
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| 30 | } |
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| 31 | |||
| 32 | /** |
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| 33 | * 如果元素不存在,使用 "." 符号添加元素到数组中。 |
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| 34 | * |
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| 35 | * @param array $array |
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| 36 | * @param string $key |
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| 37 | * @param mixed $value |
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| 38 | * @return array |
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| 39 | */ |
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| 40 | public static function add($array, $key, $value) |
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| 41 | { |
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| 42 | if (is_null(static::get($array, $key))) { |
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| 43 | static::set($array, $key, $value); |
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| 44 | } |
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| 45 | return $array; |
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| 46 | } |
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| 47 | |||
| 48 | /** |
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| 49 | * 将一组数组合并到一个数组中。 |
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| 50 | * |
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| 51 | * @param array $array |
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| 52 | * @return array |
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| 53 | */ |
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| 54 | public static function collapse($array) |
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| 55 | { |
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| 56 | $results = []; |
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| 57 | foreach ($array as $values) { |
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| 58 | if ($values instanceof Collection) { |
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| 59 | $values = $values->all(); |
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| 60 | } elseif (!is_array($values)) { |
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| 61 | continue; |
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| 62 | } |
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| 63 | $results = array_merge($results, $values); |
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| 64 | } |
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| 65 | return $results; |
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| 66 | } |
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| 67 | |||
| 68 | /** |
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| 69 | * 交叉连接给定的数组,返回所有可能的排列。 |
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| 70 | * |
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| 71 | * @param array ...$arrays |
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| 72 | * @return array |
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| 73 | */ |
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| 74 | public static function crossJoin(...$arrays) |
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| 75 | { |
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| 76 | $results = [[]]; |
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| 77 | foreach ($arrays as $index => $array) { |
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| 78 | $append = []; |
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| 79 | foreach ($results as $product) { |
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| 80 | foreach ($array as $item) { |
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| 81 | $product[$index] = $item; |
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| 82 | $append[] = $product; |
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| 83 | } |
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| 84 | } |
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| 85 | $results = $append; |
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| 86 | } |
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| 87 | return $results; |
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| 88 | } |
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| 89 | |||
| 90 | /** |
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| 91 | * 将数组分成两个数组。 一个用键和另一个用值。 |
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| 92 | * |
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| 93 | * @param array $array |
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| 94 | * @return array |
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| 95 | */ |
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| 96 | public static function divide($array) |
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| 97 | { |
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| 98 | return [array_keys($array), array_values($array)]; |
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| 99 | } |
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| 100 | |||
| 101 | /** |
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| 102 | * 用点来展平多维关联数组。 |
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| 103 | * |
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| 104 | * @param array $array |
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| 105 | * @param string $prepend |
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| 106 | * @return array |
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| 107 | */ |
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| 108 | public static function dot($array, $prepend = '') |
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| 109 | { |
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| 110 | $results = []; |
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| 111 | foreach ($array as $key => $value) { |
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| 112 | if (is_array($value) && !empty($value)) { |
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| 113 | $results = array_merge($results, static::dot($value, $prepend . $key . '.')); |
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| 114 | } else { |
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| 115 | $results[$prepend . $key] = $value; |
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| 116 | } |
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| 117 | } |
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| 118 | return $results; |
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| 119 | } |
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| 120 | |||
| 121 | /** |
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| 122 | * 获取给定的数组,除了指定的键数组。 |
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| 123 | * |
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| 124 | * @param array $array |
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| 125 | * @param array|string $keys |
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| 126 | * @return array |
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| 127 | */ |
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| 128 | public static function except($array, $keys) |
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| 129 | { |
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| 130 | static::forget($array, $keys); |
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| 131 | return $array; |
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| 132 | } |
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| 133 | |||
| 134 | /** |
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| 135 | * 确定给定的键是否存在于提供的数组中。 |
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| 136 | * |
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| 137 | * @param \ArrayAccess|array $array |
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| 138 | * @param string|int $key |
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| 139 | * @return bool |
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| 140 | */ |
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| 141 | public static function exists($array, $key) |
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| 147 | } |
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| 148 | |||
| 149 | /** |
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| 150 | * 返回数组中第一个传递给定真值测试的元素。 |
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| 151 | * |
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| 152 | * @param array $array |
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| 153 | * @param callable|null $callback |
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| 154 | * @param mixed $default |
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| 155 | * @return mixed |
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| 156 | */ |
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| 157 | public static function first($array, callable $callback = null, $default = null) |
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| 158 | { |
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| 159 | if (is_null($callback)) { |
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| 160 | if (empty($array)) { |
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| 161 | return $default; |
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| 162 | } |
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| 163 | foreach ($array as $item) { |
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| 164 | return $item; |
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| 165 | } |
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| 166 | } |
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| 167 | foreach ($array as $key => $value) { |
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| 168 | if (call_user_func($callback, $value, $key)) { |
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| 169 | return $value; |
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| 170 | } |
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| 171 | } |
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| 172 | return $default; |
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| 173 | } |
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| 174 | |||
| 175 | /** |
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| 176 | * 返回数组中传递给定真值测试的最后一个元素。 |
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| 177 | * |
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| 178 | * @param array $array |
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| 179 | * @param callable|null $callback |
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| 180 | * @param mixed $default |
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| 181 | * @return mixed |
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| 182 | */ |
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| 183 | public static function last($array, callable $callback = null, $default = null) |
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| 184 | { |
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| 185 | if (is_null($callback)) { |
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| 186 | return empty($array) ? $default : end($array); |
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| 187 | } |
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| 188 | return static::first(array_reverse($array, true), $callback, $default); |
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| 189 | } |
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| 190 | |||
| 191 | /** |
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| 192 | * 将多维数组展平成一个级别。 |
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| 193 | * |
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| 194 | * @param array $array |
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| 195 | * @param int $depth |
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| 196 | * @return array |
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| 197 | */ |
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| 198 | public static function flatten($array, $depth = INF) |
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| 199 | { |
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| 200 | $result = []; |
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| 201 | foreach ($array as $item) { |
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| 202 | $item = $item instanceof Collection ? $item->all() : $item; |
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| 203 | if (!is_array($item)) { |
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| 204 | $result[] = $item; |
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| 205 | } elseif ($depth === 1) { |
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| 206 | $result = array_merge($result, array_values($item)); |
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| 207 | } else { |
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| 208 | $result = array_merge($result, static::flatten($item, $depth - 1)); |
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| 209 | } |
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| 210 | } |
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| 211 | return $result; |
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| 212 | } |
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| 213 | |||
| 214 | /** |
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| 215 | * 使用 "." 符号从给定数组中删除一个或多个数组项。 |
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| 216 | * |
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| 217 | * @param array $array |
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| 218 | * @param array|string $keys |
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| 219 | * @return void |
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| 220 | */ |
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| 221 | public static function forget(&$array, $keys) |
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| 222 | { |
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| 223 | $original = &$array; |
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| 224 | $keys = (array)$keys; |
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| 225 | if (count($keys) === 0) { |
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| 226 | return; |
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| 227 | } |
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| 228 | foreach ($keys as $key) { |
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| 229 | // if the exact key exists in the top-level, remove it |
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| 230 | if (static::exists($array, $key)) { |
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| 231 | unset($array[$key]); |
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| 232 | continue; |
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| 233 | } |
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| 234 | $parts = explode('.', $key); |
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| 235 | // clean up before each pass |
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| 236 | $array = &$original; |
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| 237 | while (count($parts) > 1) { |
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| 238 | $part = array_shift($parts); |
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| 239 | if (isset($array[$part]) && is_array($array[$part])) { |
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| 240 | $array = &$array[$part]; |
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| 241 | } else { |
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| 242 | continue 2; |
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| 243 | } |
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| 244 | } |
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| 245 | unset($array[array_shift($parts)]); |
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| 246 | } |
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| 247 | } |
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| 248 | |||
| 249 | /** |
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| 250 | * 使用 "." 符号从数组中获取项目。 |
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| 251 | * |
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| 252 | * @param \ArrayAccess|array $array |
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| 253 | * @param string $key |
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| 254 | * @param mixed $default |
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| 255 | * @return mixed |
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| 256 | */ |
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| 257 | public static function get($array, $key, $default = null) |
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| 258 | { |
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| 259 | if (!static::accessible($array)) { |
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| 260 | return $default; |
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| 261 | } |
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| 262 | if (is_null($key)) { |
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| 263 | return $array; |
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| 264 | } |
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| 265 | if (static::exists($array, $key)) { |
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| 266 | return $array[$key]; |
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| 267 | } |
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| 268 | if (strpos($key, '.') === false) { |
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| 269 | return $array[$key] ?? $default; |
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| 270 | } |
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| 271 | foreach (explode('.', $key) as $segment) { |
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| 272 | if (static::accessible($array) && static::exists($array, $segment)) { |
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| 273 | $array = $array[$segment]; |
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| 274 | } else { |
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| 275 | return $default; |
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| 276 | } |
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| 277 | } |
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| 278 | return $array; |
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| 279 | } |
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| 280 | |||
| 281 | /** |
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| 282 | * 使用 "." 符号检查数组中是否存在一个或多个项目。 |
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| 283 | * |
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| 284 | * @param \ArrayAccess|array $array |
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| 285 | * @param string|array $keys |
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| 286 | * @return bool |
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| 287 | */ |
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| 288 | public static function has($array, $keys) |
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| 314 | } |
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| 315 | |||
| 316 | /** |
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| 317 | * 确定数组是否是Assoc。 |
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| 318 | * |
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| 319 | * 如果数组没有从零开始的连续数字键,则该数组是“Assoc”。 |
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| 320 | * |
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| 321 | * @param array $array |
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| 322 | * @return bool |
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| 323 | */ |
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| 324 | public static function isAssoc(array $array): bool |
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| 325 | { |
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| 326 | $keys = array_keys($array); |
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| 327 | return array_keys($keys) !== $keys; |
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| 328 | } |
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| 329 | |||
| 330 | /** |
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| 331 | * 获取给定数组中项目的子集。 |
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| 332 | * |
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| 333 | * @param array $array |
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| 334 | * @param array|string $keys |
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| 335 | * @return array |
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| 336 | */ |
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| 337 | public static function only($array, $keys): array |
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| 338 | { |
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| 339 | return array_intersect_key($array, array_flip((array)$keys)); |
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| 340 | } |
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| 341 | |||
| 342 | /** |
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| 343 | * 将一个项目推到数组的开头。 |
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| 344 | * |
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| 345 | * @param array $array |
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| 346 | * @param mixed $value |
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| 347 | * @param mixed $key |
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| 348 | * @return array |
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| 349 | */ |
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| 350 | public static function prepend($array, $value, $key = null): array |
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| 351 | { |
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| 352 | if (is_null($key)) { |
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| 353 | array_unshift($array, $value); |
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| 354 | } else { |
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| 355 | $array = [$key => $value] + $array; |
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| 356 | } |
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| 357 | return $array; |
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| 358 | } |
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| 359 | |||
| 360 | /** |
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| 361 | * 从数组中获取一个值,并将其删除。 |
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| 362 | * |
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| 363 | * @param array $array |
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| 364 | * @param string $key |
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| 365 | * @param mixed $default |
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| 366 | * @return mixed |
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| 367 | */ |
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| 368 | public static function pull(&$array, $key, $default = null) |
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| 369 | { |
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| 370 | $value = static::get($array, $key, $default); |
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| 371 | static::forget($array, $key); |
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| 372 | return $value; |
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| 373 | } |
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| 374 | |||
| 375 | /** |
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| 376 | * 从数组中获取一个或指定数量的随机值。 |
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| 377 | * |
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| 378 | * @param array $array |
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| 379 | * @param int|null $number |
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| 380 | * @return mixed |
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| 381 | * |
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| 382 | * @throws \InvalidArgumentException |
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| 383 | */ |
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| 384 | public static function random($array, $number = null) |
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| 385 | { |
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| 386 | $requested = is_null($number) ? 1 : $number; |
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| 387 | $count = count($array); |
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| 388 | if ($requested > $count) { |
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| 389 | throw new InvalidArgumentException( |
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| 390 | "You requested {$requested} items, but there are only {$count} items available." |
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| 391 | ); |
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| 392 | } |
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| 393 | if (is_null($number)) { |
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| 394 | return $array[array_rand($array)]; |
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| 395 | } |
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| 396 | if ((int)$number === 0) { |
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| 397 | return []; |
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| 398 | } |
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| 399 | $keys = array_rand($array, $number); |
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| 400 | $results = []; |
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| 401 | foreach ((array)$keys as $key) { |
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| 402 | $results[] = $array[$key]; |
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| 403 | } |
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| 404 | return $results; |
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| 405 | } |
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| 406 | |||
| 407 | /** |
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| 408 | * 使用 "." 符号将数组项设置为给定值。 |
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| 409 | * |
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| 410 | * 如果没有键给该方法,整个数组将被替换。 |
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| 411 | * |
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| 412 | * @param array $array |
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| 413 | * @param string $key |
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| 414 | * @param mixed $value |
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| 415 | * @return array |
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| 416 | */ |
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| 417 | public static function set(&$array, $key, $value): array |
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| 418 | { |
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| 419 | if (is_null($key)) { |
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| 420 | return $array = $value; |
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| 421 | } |
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| 422 | $keys = explode('.', $key); |
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| 423 | while (count($keys) > 1) { |
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| 424 | $key = array_shift($keys); |
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| 425 | // If the key doesn't exist at this depth, we will just create an empty array |
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| 426 | // to hold the next value, allowing us to create the arrays to hold final |
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| 427 | // values at the correct depth. Then we'll keep digging into the array. |
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| 428 | if (!isset($array[$key]) || !is_array($array[$key])) { |
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| 429 | $array[$key] = []; |
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| 430 | } |
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| 431 | $array = &$array[$key]; |
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| 432 | } |
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| 433 | $array[array_shift($keys)] = $value; |
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| 434 | return $array; |
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| 435 | } |
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| 436 | |||
| 437 | /** |
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| 438 | * 数组中的元素按随机顺序重新排序 |
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| 439 | * |
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| 440 | * @param array $array |
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| 441 | * @return array |
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| 442 | */ |
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| 443 | public static function shuffle($array) |
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| 444 | { |
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| 445 | shuffle($array); |
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| 446 | return $array; |
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| 447 | } |
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| 448 | |||
| 449 | /** |
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| 450 | * 使用给定的回调过滤数组。 |
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| 451 | * |
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| 452 | * @param array $array |
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| 453 | * @param callable $callback |
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| 454 | * @return array |
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| 455 | */ |
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| 456 | public static function where($array, callable $callback): array |
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| 457 | { |
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| 458 | return array_filter($array, $callback, ARRAY_FILTER_USE_BOTH); |
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| 459 | } |
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| 460 | |||
| 461 | /** |
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| 462 | * 如果给定的值不是数组,则将其包装为数组。 |
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| 463 | * |
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| 464 | * @param mixed $value |
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| 465 | * @return array |
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| 466 | */ |
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| 467 | public static function wrap($value): array |
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| 468 | { |
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| 469 | return !is_array($value) ? [$value] : $value; |
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| 470 | } |
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| 471 | |||
| 472 | /** |
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| 473 | * Filters an array to only the values where a given key (the name of a |
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| 474 | * sub-array key or sub-object property) is set to a given value. |
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| 475 | * |
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| 476 | * Array keys are preserved. |
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| 477 | * |
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| 478 | * @param array|\Traversable $array the array that needs to be indexed or grouped |
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| 479 | * @param string|\Closure $key the column name or anonymous function which result will be used to index the array |
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| 480 | * @param mixed $value the value that $key should be compared with |
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| 481 | * @param bool $strict 是否严格比较 |
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| 482 | * @return array the filtered array |
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| 483 | */ |
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| 484 | public static function filterByValue($array, $key, $value, bool $strict = false): array |
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| 485 | { |
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| 486 | $result = []; |
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| 487 | |||
| 488 | foreach ($array as $i => $element) { |
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| 489 | $elementValue = static::getValue($element, $key); |
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| 490 | /** @noinspection TypeUnsafeComparisonInspection */ |
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| 491 | if (($strict && $elementValue === $value) || (!$strict && $elementValue == $value)) { |
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| 492 | $result[$i] = $element; |
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| 493 | } |
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| 494 | } |
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| 495 | |||
| 496 | return $result; |
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| 497 | } |
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| 498 | |||
| 499 | /** |
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| 500 | * 从数组中过滤空字符串。 |
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| 501 | * |
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| 502 | * @param array $arr |
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| 503 | * @return array |
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| 504 | */ |
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| 505 | public static function filterEmptyStringsFromArray(array $arr): array |
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| 506 | { |
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| 507 | return array_filter($arr, function ($value): bool { |
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| 508 | return $value !== ''; |
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| 509 | }); |
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| 510 | } |
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| 511 | |||
| 512 | /** |
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| 513 | * 返回给定数组中的第一个键。 |
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| 514 | * |
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| 515 | * @param array $arr |
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| 516 | * @return string|int|null The first key, whether that is a number (if the array is numerically indexed) or a string, or null if $arr isn’t an array, or is empty. |
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| 517 | */ |
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| 518 | public static function firstKey(array $arr) |
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| 526 | } |
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| 527 | |||
| 528 | /** |
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| 529 | * 返回给定数组中的第一个值。 |
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| 530 | * |
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| 531 | * @param array $arr |
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| 532 | * @return mixed The first value, or null if $arr isn’t an array, or is empty. |
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| 533 | */ |
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| 534 | public static function firstValue(array $arr) |
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| 535 | { |
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| 536 | return !empty($arr) ? reset($arr) : null; |
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| 537 | } |
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| 538 | |||
| 539 | /** |
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| 540 | * 重命名数组中的项目。如果新Key已经存在于数组中,并且旧Key不存在,数组将保持不变。 |
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| 541 | * |
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| 542 | * @param array $array the array to extract value from |
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| 543 | * @param string $oldKey old key name of the array element |
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| 544 | * @param string $newKey new key name of the array element |
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| 545 | * @param mixed $default the default value to be set if the specified old key does not exist |
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| 546 | * @return void |
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| 547 | */ |
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| 548 | public static function rename(array &$array, string $oldKey, string $newKey, $default = null) |
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| 552 | } |
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| 553 | } |
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| 554 | } |