adding updated code

sys0-code/api/update_settings.php

@@ -0,0 +1,41 @@
+<?php
+	include "../config/config.php";
+	session_start();
+	if(isset($_GET["telegram_id"])){
+		$telegram_id=htmlspecialchars($_GET["telegram_id"]);
+		$id=$_SESSION["id"];
+		$sql="update users set telegram_id=? where id=?";
+		$stmt = mysqli_prepare($link, $sql);	
+		mysqli_stmt_bind_param($stmt, "si", $telegram_id,$id);				
+		mysqli_stmt_execute($stmt);
+		$_SESSION["telegram_id"]=$telegram_id;
+	}
+	if(isset($_GET["notification_telegram"])){
+		if($_GET["notification_telegram"]=="true"){
+			$sql="update users set notification_telegram=1 where id=?";
+			$_SESSION["notification_telegram"]=1;
+		}	
+		else{
+			$sql="update users set notification_telegram=0 where id=?";
+			$_SESSION["notification_telegram"]=0;
+		}
+		$id=$_SESSION["id"];
+		$stmt = mysqli_prepare($link, $sql);	
+		mysqli_stmt_bind_param($stmt, "i" ,$id);				
+		mysqli_stmt_execute($stmt);
+	}
+	if(isset($_GET["notification_mail"])){
+		if($_GET["notification_mail"]=="true"){
+			$sql="update users set notification_mail=1 where id=?";
+			$_SESSION["notification_mail"]=1;
+		}	
+		else{
+			$sql="update users set notification_mail=0 where id=?";
+			$_SESSION["notification_mail"]=0;
+		}
+		$id=$_SESSION["id"];
+		$stmt = mysqli_prepare($link, $sql);	
+		mysqli_stmt_bind_param($stmt, "i" ,$id);				
+		mysqli_stmt_execute($stmt);
+	}
+?>