Facebook Page has now become a vital part for any business. With increasing dependency on Facebook for promoting products or services, Facebook Messenger Chat Bot can prove to be a new tool to enhance your business to the targeted audience.
Source Code PHP
<?php $access_token = '{ACCESS_TOKEN_HERE}'; $verify_token = '{VERIFY_TOKEN_HERE}'; $hub_verify_token = null; if(isset($_REQUEST['hub_mode']) && $_REQUEST['hub_mode']=='subscribe'){ $challenge = $_REQUEST['hub_challenge']; $hub_verify_token = $_REQUEST['hub_verify_token']; if($hub_verify_token===$verify_token){ header('HTTP/1.1 200 OK'); echo $challenge; die; } } $input = json_decode(file_get_contents('php://input'),true); $sender = $input['entry'][0]['messaging'][0]['sender']['id']; $message = isset($input['entry'][0]['messaging'][0]['message']['text'])? $input['entry'][0]['messaging'][0]['message']['text']:''; if($message){ //you can change your logic here to reply what you want if($message=='hi'){ //if user sends hi we will reply like this $message_to_reply = 'Hello !!! How can I help you ?'; }else{ $message_to_reply = "This is the message to send back to the user"; } $url = "https://graph.facebook.com/v2.6/me/messages?access_token=".$access_token; $jsonData = '{ "recipient:{ "id":"'.$sendere.'" }, "message":{ "text":"'.$message_to_reply.'" } }'; $ch = curl_init($url); curl_setopt($ch,CURLOPT_POST,1); curl_setopt($ch,CURLOPT_POSTFIELDS,$jsonData); curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json')); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); $result = curl_exec($ch); curl_close($ch); }
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