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如何学习PHP array_flip()

Jun 13, 2016 am 09:29 AM
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如何学习PHP array_flip()

定义和用法

array_flip() 函数返回一个反转后的数组,如果同一值出现了多次,则最后一个键名将作为它的值,所有其他的键名都将丢失。

如果原数组中的值的数据类型不是字符串或整数,函数将报错。

语法

array_flip(array)

 

参数

描述

 

array必需。规定输入的数组。

 

 

例子

"Dog",1=>"Cat",2=>"Horse");print_r(array_flip($a)); ?>

输出:

Array ( [Dog] => 0 [Cat] => 1 [Horse] => 2 )

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