[BlackHorse]

INTRODUCTION
In this tutorial we learn how to make a weapon shop through dialog style list
LETS GET STARTED
STEP 1
Include a_samp

PHP Code:

#include a_samp 


STEP 2
Make a command in which dialog display

PHP Code:

public OnPlayerCommandText(playerid, cmdtext[])
{
    if (strcmp("//Your command here", cmdtext, true, 10) == 0)
    {
            ShowPlayerDialog(playerid, 465, DIALOG_STYLE_LIST, "Weapon shop", "Weapon name here    here price    ammo here", "BUY", "CANCEL");//Cancel is important to cancel the dialog you can add colors in title and in dialog buy to buy the weapon 465 is the ID of dialog
        return 1;
    }
    return 0;
} 


STEP 3
Give player weapon through dialog

PHP Code:

public OnDialogResponse(playerid, dialogid, response, listitem, inputtext[])
{
    if(dialogid == 465)//465 is the ID of dialog
    {
        if(reponse)
        {
            switch(listitem)
            {
                case 0://1st item
                {
                    GivePlayerWeapon(playerid, //The weapon name you typed comment end\\, //The ammo you typed comment end\\);
                    GivePlayerMoney(playerid, -//The price of weapon you typed comment end\\);
                }
                case 1://2nd item
                {
                    //Do what you do on 1st item comment end\\
                }
            }
        }
    }
    return 1;
}