如何使用PHP模拟curl -X Post

I was wondering how to simulate a curl command in PHP. I want to simulate this:

curl -X POST https://example.com/token\?\
client_id\=your_client_id\&\
client_secret\=your_client_secret\&\
grant_type\=client_credentials\&\
scope\=public

I tried this:

 curl_setopt($s, CURLOPT_POST,array(
 'client_id=my_id',
 'client_secret/=my_secred',
 'grant_type/=client_credentials', 
 'scope/=public'
     ));

But I didn't have any luck.

Use http_build_query to encode your data to a query string, and then set the CURLOPT_POSTFIELDS option, along with CURLOPT_POST and CURLOPT_URL params, and finally send it.

$s = curl_init();
curl_setopt($s, CURLOPT_URL, 'https://example.com/token');
curl_setopt($s, CURLOPT_POST, 1);
curl_setopt($s, CURLOPT_POSTFIELDS, http_build_query([
    'client_id' => 'my_id',
    'client_secret' => 'my_secred',
    'grant_type' => 'client_credentials', 
    'scope' => 'public'
]));
curl_exec($s);
curl_close($s);