json_decode - 强制数组键为字符串

Question

Take a look at the following code:

$a = json_decode('{"0":"xy"}', true);

This will return an associative array like [0 => "xy"].

Is there a way not to automatically convert the keys to numbers? The result I'd like to have would be the array ["0" => "xy"] with strings as keys exclusively.

Answer 1

Not really sure why you would want numerical array keys to be strings. It can make life harder when trying to search through an array by key or rekey the array.

However, if you really want your keys to be strings this should help

$array = json_decode('{"0":"xy"}', true);
foreach($array as $key => $value) { 
   $newArray[(string) $key] = $value;
}