PHP中带有字符串键的数组的扩展运算符[重复]

Question

PHP 支持扩展运算符PHP Spread Syntax in Array Declaration

$ary = [3, 4, 5];
return [1, 2, ...$ary]; // same as [1, 2, 3, 4, 5]

现在我正在“对象”上尝试一个简单的扩展运算符，但它失败了

 $a = ['a' => 1];
 $b = ['b' => 2];
 $c = [...$a, ...$b]; // Expected $c = ['a' => 1, 'b' => 2]

我错过了什么吗？

无法使用字符串键解包数组

Answer 1

php 根本不支持，要获得预期的结果，您需要使用array_merge

$a = ['a' => 1];
$b = ['b' => 2];
$c = array_merge($a, $b); // this will have $c = ['a' => 1, 'b' => 2]