PHP array_flip() 函数
PHP 教程
· 2019-01-22 08:11:26
实例
反转数组中的键名和对应关联的键值：
<?php
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$result=array_flip($a1);
print_r($result);
?>
$a1=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$result=array_flip($a1);
print_r($result);
?>
定义和用法
array_flip() 函数用于反转/交换数组中的键名和对应关联的键值。
语法
array_flip(array);
| 参数 | 描述 |
|---|---|
| array | 必需。规定需进行键/值对反转的数组。 |
技术细节
| 返回值： | 如果反转成功，则返回反转后的数组。如果反转失败，则返回 NULL。 |
|---|---|
| PHP 版本： | 4+ |
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