arrayarray_flip(array$array) 将$array的键和值交换返回一个新的数组 $arr = [1 = 'a',2 = 'b',3 = 'c'];$arr = array_flip($arr);echo 'pre';print_r($arr);result:Array( [a] = 1 [b] = 2 [c] = 3)
array array_flip ( array $array )
将$array 的键和值交换返回一个新的数组
$arr = [
1 => 'a',
2 => 'b',
3 => 'c'
];
$arr = array_flip($arr);
echo '<pre class="brush:php;toolbar:false">';
print_r($arr);
result:
Array
(
[a] => 1
[b] => 2
[c] => 3
)
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