logger function + JSON formatted version

function logger( $log ) {
$tDate=date("d-M-Y G:i:s");
$site=$_SERVER["HTTP_HOST"];
$myfile = fopen($_SERVER['DOCUMENT_ROOT']."\\logs\\custlog.txt", "a+") or die("Unable to open file!");
fwrite($myfile, "\n".$site." | ". $log." - ".$tDate);
fclose($myfile);
}
function dumper($params, $chCopy)
{
$data = array();
$data['CALL'] = $params['api_call'];
$data['cURL'] = $chCopy;
$data['response'] = $params;
$f = fopen('../logs/' . $data["CALL"] . '/' . date("Y-m-d") . '_api.log', 'a+b');
$trace = debug_backtrace();
if (DEBUG) {
$data['trace'] = $trace;
$json = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
} else {
$json = json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES); // COMMENT OUT IN PROD AND TURN DEBUG OFF - COMPACTS LOGS
// $json=json_encode($data, JSON_UNESCAPED_SLASHES);
}
fwrite($f, $json . "\n");
fclose($f);
}