LINE WEBHOOK BY GROUP

line_group_webhook.php

<?php
  /*
    LINE Example Webhook Group v.1
  */
  /*Function Write File LOG*/
	file_put_contents('log.txt', file_get_contents('php://input') . PHP_EOL, FILE_APPEND);

  /*Get Data From POST Http Request*/
	$datas = file_get_contents('php://input');
  /*Decode Json From LINE Data Body*/
	$deCode = json_decode($datas,true);
  /*GET Reply Token*/
	$replyToken = $deCode['events'][0]['replyToken'];
  
  /*GET Source Type*/
  $sourceType = $deCode['events'][0]['source']['type'];
  if($sourceType == 'group'){
    /*GET GroupID*/
    $groupId = $deCode['events'][0]['source']['groupId'];
    /*GET Event Type*/
    $groupEvent = $deCode['events'][0]['type'];
    if($groupEvent == 'message'){
      /*Message Type*/
      $messageType = $deCode['events'][0]['message']['type'];
      if($groupId == '<group id>'){
        /*Example TEXT Message*/
        $dataSendMessage['messages'][0] = getFormatTextMessage("Hello World");

        /*Set Reply Token*/
	      $dataSendMessage['replyToken'] = $replyToken;

        /*Json Encode*/
        $encodeJson = json_encode($dataSendMessage);

        /*Set URL*/
        $functionals['url'] = "https://api.line.me/v2/bot/message/reply";
        $functionals['token'] = getTokenData();

        /*Function Send Message*/
        $resp = sentMessage($encodeJson,$functionals);
        
        /*Function Write File LOG*/
	      file_put_contents('log.txt', json_encode($resp) . PHP_EOL, FILE_APPEND);
      }
    }else{
      
    }
  }

  /*Return HTTP Request 200*/
	http_response_code(200);

  function getFormatTextMessage($text)
	{
		$datas = [];
		$datas['type'] = 'text';
		$datas['text'] = $text;
		return $datas;
	}

  function getTokenData()
  {
    $token = "<token>";

    return $token;
  }

  function sentMessage($encodeJson,$datas)
	{
		$datasReturn = [];
      	$curl = curl_init();
        curl_setopt_array($curl, array(
          CURLOPT_URL => $datas['url'],
          CURLOPT_RETURNTRANSFER => true,
          CURLOPT_ENCODING => "",
          CURLOPT_MAXREDIRS => 10,
          CURLOPT_TIMEOUT => 30,
          CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
          CURLOPT_CUSTOMREQUEST => "POST",
          CURLOPT_POSTFIELDS => $encodeJson,
          CURLOPT_HTTPHEADER => array(
            "authorization: Bearer ".$datas['token'],
            "cache-control: no-cache",
            "content-type: application/json; charset=UTF-8",
          ),
        ));

        $response = curl_exec($curl);
        // dd($response);
        $err = curl_error($curl);

        curl_close($curl);

        if ($err) {
            $datasReturn['result'] = 'E';
            $datasReturn['message'] = $err;
        } else {
            if($response == "{}"){
                $datasReturn['result'] = 'S';
                $datasReturn['message'] = 'Success';
            }else{
                $datasReturn['result'] = 'E';
                $datasReturn['message'] = $response;
            }
        }

        return $datasReturn;
	}

	
?>