<?php
// Define your server settings.
$conn = mysqli_connect("[ServerName]", "[UserName]", "[Password]", "[DatabaseName]");
// Check whether the requested sql command is working properly or not. 
function checkDatabase($sql){
	return (mysqli_num_rows(mysqli_query($GLOBALS['conn'], $sql)) > 0) ? true : false;
}

$_sql = "SELECT * FROM `[TableName]` WHERE ...";

// As columns in the table, I created followers, screen_name, and status.
// Do not forget to save a screen name to the database before executing the code to avoid any possible error.
if(checkDatabase($_sql)){
	if($result = mysqli_fetch_assoc(mysqli_query($conn, $_sql))){
		$url = "https://cdn.syndication.twimg.com/widgets/followbutton/info.json?screen_names=".$result['screen_name'];
		$data = json_decode(file_get_contents($url), true);
        $followers = (int)$data[0]['followers_count'];
		if((int)$result['followers'] == $followers){
			$output = array(
			   "followers" => $result['followers'],
			   "screen_name" => $result['screen_name'],
			   "last_status" => $result['status'],
			   "status" => "STABLE"
			);
		}else if((int)$result['followers'] > $followers){
			$__sql = "UPDATE `[TableName]` SET `followers`='$followers', `status`='DEC' WHERE ...";
			mysqli_query($conn, $__sql);
			$output = array(
			   "followers" => $followers,
			   "screen_name" => $result['screen_name'],
			   "last_status" => $result['status'],
			   "status" => "DEC"
			);
		}else if((int)$result['followers'] < $followers){
			$__sql = "UPDATE `[TableName]` SET `followers`='$followers', `status`='INC' WHERE ...";
			mysqli_query($conn, $__sql);
			$output = array(
			   "followers" => $followers,
			   "screen_name" => $result['screen_name'],
			   "last_status" => $result['status'],
			   "status" => 'INC'
			);
		}
		
		echo "%".$output['followers']."%".$output['screen_name']."%".$output['last_status']."%".$output['status']."%";
	}
}

exit();

?>