PHP合并两个数组的两种方式
本文导语: 对数组的array_merge函数和+运算符比较迷惑,用以下程序检测下二者的不同。 特别是+运算符,将右边的数组单元(去重复)追加到左边数组的后面。 例子: 代码示例: 输出结果: 第一种情况 Array ( [0] => 1 [1]...
对数组的array_merge函数和+运算符比较迷惑,用以下程序检测下二者的不同。
特别是+运算符,将右边的数组单元(去重复)追加到左边数组的后面。
例子:
输出结果:
第一种情况
Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
[5] => 6
[6] => 7
[7] => 8
[8] => 9
)
Array
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
[5] => 6
)
Array
(
[0] => 7
[1] => 8
[2] => 9
[3] => 4
[4] => 5
[5] => 6
)
第二种情况
Array
(
[0] => a
[1] => b
[2] => c
[3] => d
[4] => e
[5] => f
[6] => a
[7] => x
[8] => y
)
Array
(
[0] => a
[1] => b
[2] => c
[3] => d
[4] => e
[5] => f
)
Array
(
[0] => a
[1] => x
[2] => y
[3] => d
[4] => e
[5] => f
)
第三种情况
Array
(
[0] => a
[1] => b
[2] => c
[3] => d
[4] => e
[5] => f
[6] => a
[7] => x
[8] => y
)
Array
(
[1] => a
[2] => b
[3] => c
[4] => d
[5] => e
[6] => f
[7] => x
[8] => y
)
Array
(
[1] => a
[7] => x
[8] => y
[2] => b
[3] => c
[4] => d
[5] => e
[6] => f
)