Grammar errors for beginners: syntax error, unexpected ':', expecting '

Question

function sum(int ...$nums)

{

return array_sum($nums);

}

try {

echo sum(...nums:1,2,3,5); //This error is reported, I don’t know what the problem is.

} catch (\Throwable $th) {

echo $th->getMessage();

}

Parse error: syntax error, unexpected ':', expecting ')' in D:\phpstudy_pro\WWW\yhj.php on line 52

Answer 1

What did you write? It’s all wrong

Answer 2

...nums

What is this