Login MySQL Problem

[FlyingSpoon]

-- Default 
host = "127.0.0.1" -- Database Host 
username = "root" -- Database Username 
password = "" -- Database Password 
db = "mvp_forum" -- Database ( Where you got your tables ) 
  
handler = mysql_connect( host, username, password, db ) 
  
  
function onLogin ( strInfoUser, strInfoPass ) 
    handler = mysql_connect( host, username, password, db ) 
    local login = mysql_query(handler,"SELECT * FROM mvp_forum WHERE name = '"..mysql_escape_string( handler, strInfoUser ).."' AND members_pass_hash = '"..mysql_escape_string( handler, md5(strInfoPass) ).."';") 
    if login then 
        local rows = mysql_num_rows(login) 
        if rows == 1 then 
            triggerClientEvent( player, "HideLogin", getRootElement() ) 
            outputChatBox("* You successfully logged in your account!", player, 255, 255, 255) 
            spawnPlayer( player, 0,0,3 )  
            fadeCamera( player, true ) 
            setCameraTarget( player, player ) 
        else 
            outputChatBox("* Login failed!", player, 255, 255, 255) 
        end 
        mysql_free_result(login) 
    end 
end 
addEvent( "onRequestAccessTo", true ) 
addEventHandler( "onRequestAccessTo", getRootElement(), onLogin ) 

[2015-12-19 19:10:17] ERROR: Line 12 -  bad argument #2 to 'mysql_escape_string' (string expected, got nil) 

[Addlibs]

1) mysql_escape_string needs the connection handler as first argument, the string-to-escape goes second

2) It's better to use db* functions in my opinion.

[FlyingSpoon]

Well, I am still a MySQL learner,

I am trying to connect this login panel to my Forums, I am really confused at the moment

[Noki]

The in-built db functions pass input as parameters, as opposed to processing input. That means you don't need to worry about SQL injection.