[Sanjay Singh]

Solved.

It's not working, I want to show a permanent banner to all users when they enter the server.

Include: https://forums.alliedmods.net/showthread.php?t=298248

PHP Code:

//Includes
#include <sourcemod>
#include <sdktools>   //need for adding files to download table
#include <overlays>


//Compiler Options   //Optional, but please keep your code clean!
#pragma semicolon 1
#pragma newdecls required


//use a define or if needed (for cvars) a string
#define OVERLAYPATH "amsgamers/overlay"   //Path to the overlay relative to materials/.. - no need for extentions like .vmt or .vft

public Plugin myinfo = {
    name        = "AmS LOGO",
    author      = "AmS` SkY#IN",
    description = "Shows AmS BAnner",
    version     = "0.1",
    url         = "http://www.amsgaming.in"
};


public void OnMapStart()
{
    PrecacheDecalAnyDownload(OVERLAYPATH);
}

public void OnClientPutInServer(int client)
{
    ShowOverlay(client, OVERLAYPATH, 0.0);
}