Here is the php code to show error on a specific IP
if($_SERVER["REMOTE_ADDR"] =='xxx.xxxx.xxx.xxx'){
error_reporting(E_ALL);
ini_set('display_errors','Off');
ini_set("log_errors", 1);
ini_set("error_log", "Your Error log path");
# Your Error log path e.g "D:/xampp/htdocs/live/errors/lservererror.html"
}
Write a PHP File
$arrayInfo =array();
$path = "/var/www/html/";
$fp = fopen($path."arrayDetails.txt", "a");
fwrite($fp, print_r($arrayInfo,true));
fclose($fp);