32
'你好，世界！'
32.5
数组 ( 0 => '红色', 1 => '绿色', 2 => '蓝色', )
数组 ( 0 => 32, 1 => '你好，世界！', 2 => 32.5, 3 => 数组 ( 0 => '红色', 1 => '绿色', 2 => '蓝色', ), )