What should I do if PHP receives garbled post parameters?

Solution to php receiving garbled post parameters: First open the PHP file; then change the "header" code to "echo '

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Solution to php receiving garbled post parameters:

Specific problem:

PHP $_POST submits Chinese garbled characters

html:


{$pro_name}


价格：￥{$pro_price}


已售出：{$pro_sale}件
数量




action:
public function add(){
$user = session("user_name");
if(session("user_name")){
header("Content-Type:text/html;charset=utf8");
request.setCharacterEncoding("UTF-8");
$common = D("Common");
$data["user_id"] = $user[0]["user_id"];
$data["user_name"] = $user[0]["user_name"];
$data["pro_id"] = $_POST["pro_id"];
$data["pro_name"] = $_POST["pro_name"];
$data["pro_price"] = $_POST["pro_price"];
$data["pro_num"] = $_POST["pro_num"];
$data["pro_total"] = $_POST["pro_num"]*$_POST["pro_price"];
dump($data);
echo $data["pro_name"];
}
}

Why is the received $_POST["pro_name"] garbled? I checked the source code of the page and the hidden field is not garbled

Solution:

header("Content-Type:text/html;charset=utf8");

Modify to

echo '';

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