PHP 数组构建：从 JSON 数据提取 Key 和 Value

$items = array( array('key' => 'normal', 'value' => 0), array('key' => 'genuine', 'value' => 1), array('key' => 'vintage', 'value' => 2), array('key' => 'unusual', 'value' => 3), array('key' => 'unique', 'value' => 4), array('key' => 'community', 'value' => 5), array('key' => 'developer', 'value' => 6), array('key' => 'selfmade', 'value' => 7), array('key' => 'customized', 'value' => 8), array('key' => 'strange', 'value' => 9), array('key' => 'completed', 'value' => 10), array('key' => 'haunted', 'value' => 11), array('key' => 'tournament', 'value' => 12), array('key' => 'favored', 'value' => 12), array('key' => 'ascendant', 'value' => 14), array('key' => 'autographed', 'value' => 15), array('key' => 'legacy', 'value' => 16), array('key' => 'exalted', 'value' => 17), array('key' => 'frozen', 'value' => 18), array('key' => 'corrupted', 'value' => 19), array('key' => 'lucky', 'value' => 20), array('key' => 'infused', 'value' => 21) );