卸下外部阵列: [英] Removing an outer array:

问题描述

如果数组中有一个数组，如何删除外部数组:

IF you have an array within an array, how can you remove the outer array:

$outer_array = array(0 => array(
                                'key1' => 'value1',
                                'key2' => 'value2'
     ));

print_r($ outer_array)产生:

print_r($outer_array) produces:

Array
(
    [0] => Array
        (
            [key1] => value1
            [key2] => value2
        )

)

是否有内置在php中的函数，所以您可以使用:

Is there a function built into php so you are left with:

        Array
        (
            [key1] => value1
            [key2] => value2
        )

推荐答案

您可以轻松地做到:

$new_array = $outer_array[0];
print_r($new_array);

结果:

Array
(
    [key1] => value1
    [key2] => value2
)

注意:正如@netcoder指出的那样，要使其同时适用于数字索引和字符串索引，您可以执行以下操作:

Note: As pointed out by @netcoder, to make it work for both numeric and string indexes, you can do:

$new_array = $outer_array[0];
$new_array = reset($out_arr);

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