PHP完整代码(2023年6月7日 11:32:37):

<?php
$dug = true;
//微信小程序令牌
$dynamicToken = (isset($_GET['dynamicToken']) && !empty($_GET['dynamicToken']))? $_GET['dynamicToken']:"";
if($dug) {
   echo "小程序动态令牌(dynamicToken): ".$dynamicToken."<br>";
}
$appid = "111";
$secret = "222";
$access_token = getAccessToken($appid, $secret);
if($access_token !== false){
      //获取成功，加上小程序传来的临时令牌, 再去请求详情
	//$dynamicToken $access_token -> getuserphonenumber
	$data = array(
	   //$access_token 必须放到url上, post参数仅有code一个
	   //'access_token' => $access_token,
		'code' => $dynamicToken
	);
getUserPhoneNumber("https://api.weixin.qq.com/wxa/business/getuserphonenumber?access_token=".$access_token,$data);
}

function getAccessToken($appid,$secret){
    $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$secret;
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); 
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); 
    $data = curl_exec($ch);
    if(curl_errno($ch)){
	    echo '<br>Curl error: ' . curl_error($ch)."<br>";
        return curl_error($ch);
    }
    curl_close($ch);
    $result = json_decode($data,true);
	var_dump($result);
	echo '<br>';
    if(isset($result["access_token"])){
        return $result["access_token"];
    }else{
		echo "<br>getAccessToken Failed: ".$result["errcode"].";".$result["errmsg"]."<br>";
		return false;
    }
}


function getUserPhoneNumber($remote_server, $data) {
  $json_data = json_encode($data);
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, $remote_server);
  curl_setopt($ch, CURLOPT_POST, true);
  curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
  curl_setopt($ch, CURLOPT_POSTFIELDS, $json_data);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); 
  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); 
  $data = curl_exec($ch);
  if(curl_errno($ch)){
	  echo '<br>Curl error: ' . curl_error($ch)."<br>";
      return curl_error($ch);
  }
  curl_close($ch);
  var_dump($data);
  //$result = json_decode($data,true);
  //var_dump($result);
  return $data;
}
?>

已解决