Binance api php

I’m trying to integrate a binance api with php.
I want to spend my spot wallets and earnings.
I can’t find the url I need for it and I can’t get the endpoint either.

Additional question: For what do I need the timestamp?

    $secret = "mySecretKey";
    $key = "myApiKey";
    
    $s_time = "timestamp=".time()*1000;
    
    $sign=hash_hmac('SHA256', $s_time, $secret);
        
 
    $url = "https://api.binance.com/api/v1/balances?".$s_time.'&signature='.$sign;

    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array('X-MBX-APIKEY:'.$key));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_URL, $url);
    
    $result = curl_exec($ch);
    
    $result = json_decode($result, true);
    
    echo '<pre>';
    var_dump($result);
    echo '</pre>';
    
  curl_close($ch);

I’ve tried many urls and looked at the binance documentation for a long time but I just can’t find it.

Thanks for your help!