摘要：创建数组 $arr = ['a','b','c','d']; 索引数组 带有数组索引的数组 $arr1 = ['a' => 'aa','b' => 'bb', 'c' => 'cc']; 关联数组 带有指定键的数组 $arr2 = ['a' => 'aaa', 'b' => 'bbb', 'c' = 阅读全文