PHP的：通过索引插入到关联数组？(PHP: insert into associative array by index?)

PHP的：通过索引插入到关联数组？(PHP: insert into associative array by index?)

我有一个数组像：

$example = array("car"=>"red", "banana"=>"yellow", etc...)

是否有可能通过索引而不是键值来改变数组的值

$example[0] = "blue";

所以数组现在看起来像

$example = array("car"=>"blue", "banana"=>"yellow", etc...)

I have an array like:

$example = array("car"=>"red", "banana"=>"yellow", etc...)

Is it possible to alter a value of the array by index instead of key value like

$example[0] = "blue";

So that the array now looks like

$example = array("car"=>"blue", "banana"=>"yellow", etc...)

最满意答案

你可以这样做：

$e = array("car"=>"red", "banana"=>"yellow"); $keys = array_keys($e); $e[$keys[0]] = 'blue'; var_dump($e);

输出是

array(2) { ["car"]=> string(4) "blue" ["banana"]=> string(6) "yellow" }

you can do this way:

$e = array("car"=>"red", "banana"=>"yellow"); $keys = array_keys($e); $e[$keys[0]] = 'blue'; var_dump($e);

the output is

array(2) { ["car"]=> string(4) "blue" ["banana"]=> string(6) "yellow" }