diff --git a/login/login.php b/login/login.php
index 47470d9c0b2b3916a099a43f0cc7938f84b12e11..2321c7a5051639fd45c0ca65298206ad21a3efc4 100755
--- a/login/login.php
+++ b/login/login.php
@@ -4,7 +4,7 @@
             include '../database/dbconnect.php';
             $username = $_POST['user_name'];
             $password = $_POST['user_password'];
-            $query = mysqli_query($con,"SELECT * FROM user WHERE username='".$username."' AND password='".$password."'") or die(mysql_error());
+            $query = mysqli_query($con,"SELECT * FROM user WHERE username='".$username."' AND password='".$password."'") or die(mysqli_error());
             
             $numrows=mysqli_num_rows($query);
             if($numrows!=0)
diff --git a/login/sign_up.php b/login/sign_up.php
index 3859b1a4aaec621025cf47f345a097bd50fa48c5..bce711dba2e288488ed36ddebfcf3392cf3f6fb9 100644
--- a/login/sign_up.php
+++ b/login/sign_up.php
@@ -23,7 +23,7 @@
                 $status = 'customer';
             }
             
-            $query = mysqli_query($con,"INSERT INTO user (name,email,phone,username,password,status,pict) VALUES ('$fullname', '$email', '$phone', '$username', '$password', '$status',DEFAULT)") or die(mysql_error());
+            $query = mysqli_query($con,"INSERT INTO user (name,email,phone,username,password,status,pict) VALUES ('$fullname', '$email', '$phone', '$username', '$password', '$status',DEFAULT)") or die(mysqli_error());
             if($query)
             {
                 $getUserID = mysqli_query($con,"SELECT user_id FROM user WHERE username='".$username."'") or die(mysql_error());
@@ -52,10 +52,10 @@
             include '../database/dbconnect.php';
             
             if ($key == "username") {
-                $query = mysqli_query($con,"SELECT * FROM user WHERE username='".$value."'") or die(mysql_error());
+                $query = mysqli_query($con,"SELECT * FROM user WHERE username='".$value."'") or die(mysqli_error());
                 $numrows=mysqli_num_rows($query);
             } else if ($key == "user_email") {
-                $query = mysqli_query($con,"SELECT * FROM user WHERE email='".$value."'") or die(mysql_error());
+                $query = mysqli_query($con,"SELECT * FROM user WHERE email='".$value."'") or die(mysqli_error());
                 $numrows=mysqli_num_rows($query);
             }
             if ($numrows != 0) {
diff --git a/profile_page/edit_profile.php b/profile_page/edit_profile.php
index 9331cad55a0e1bc52e7c5a047cb502bfcf0d2a16..6df332def3127325978a2ddc717106d1bbb7bd32 100755
--- a/profile_page/edit_profile.php
+++ b/profile_page/edit_profile.php
@@ -69,7 +69,7 @@
         
         $username = $_GET['username'];
         $user_id = $_GET['id'];
-        $query=mysqli_query($con,"SELECT * FROM user WHERE username='".$username."'") or die(mysql_error());
+        $query=mysqli_query($con,"SELECT * FROM user WHERE username='".$username."'") or die(mysqli_error());
     
         $numrows=mysqli_num_rows($query);
         if($numrows!=0)
diff --git a/profile_page/getProfilePict.php b/profile_page/getProfilePict.php
index ac181620e4d7b27b30b21d77fa6bc7b852ba5d45..c4c1c6c848912d2a139461a01b1fa8c03e2a550a 100644
--- a/profile_page/getProfilePict.php
+++ b/profile_page/getProfilePict.php
@@ -1,7 +1,7 @@
 <?php
     $user = $_GET['username'];
     include '../database/dbconnect.php';
-    $query=mysqli_query($con,"SELECT pict FROM user WHERE username='".$user."'") or die(mysql_error());
+    $query=mysqli_query($con,"SELECT pict FROM user WHERE username='".$user."'") or die(mysqli_error());
     $row=mysqli_fetch_assoc($query);
     mysqli_close($con);
     if (isset($row['pict'])) {
diff --git a/profile_page/profile.php b/profile_page/profile.php
index ddd785cab76e9508922cef32db454b63321b68dd..689591bfb3464d014ecd54f792a431bb67b97c63 100755
--- a/profile_page/profile.php
+++ b/profile_page/profile.php
@@ -28,7 +28,7 @@
             <?php
                 include '../database/dbconnect.php';
                 
-                $query=mysqli_query($con,"SELECT * FROM user WHERE username='".$username."'") or die(mysql_error());
+                $query=mysqli_query($con,"SELECT * FROM user WHERE username='".$username."'") or die(mysqli_error());
     
                 $numrows=mysqli_num_rows($query);
                 if($numrows!=0)
diff --git a/profile_page/update_profile.php b/profile_page/update_profile.php
index fa53b43a99ea6c7681eb8a27760a3ae9c6011b55..043ff9649332a85fbc175fb3c74098840c0b743a 100644
--- a/profile_page/update_profile.php
+++ b/profile_page/update_profile.php
@@ -42,13 +42,13 @@
                 {
                     $fileName = addslashes($fileName);
                 }
-                $query=mysql_query("UPDATE user set name='".$new_name."',phone='".$new_phone."',status='".$status."',pict='".$content."'WHERE username='".$username."'") or die(mysql_error());
+                $query=mysqli_query($con,"UPDATE user set name='".$new_name."',phone='".$new_phone."',status='".$status."',pict='".$content."'WHERE username='".$username."'") or die(mysqli_error());
             }
             if($query)
             {
                 header("Location: profile.php");
             }
-            mysql_close();
+            mysqli_close($con);
         }
     }
 ?>