[K.K.Lv]

As I said, work fine!
code here !

#include <amxmodx>
native set_utf8_name(index, uname[]);
 
#define PLUGIN_NAME "NewPlugin"
#define PLUGIN_VERSION "0.1"
#define PLUGIN_AUTHOR "LittleKu-Lv"
 
new username[33][32];
new Array:g_aname;
new Array:g_uname;
new line;
 
public plugin_init()
{
    register_plugin(PLUGIN_NAME, PLUGIN_VERSION, PLUGIN_AUTHOR);
    g_aname = ArrayCreate(32);
    g_uname = ArrayCreate(32);
    register_clcmd("say", "cmdsay");
}
 
public cmdsay(id)
{
    new cmd[38]
    new arg1[5], arg2[32]
    read_args(cmd, 37)
    remove_quotes(cmd)
    if (parse(cmd, arg1, 4, arg2, 31) == 2)
    {
    if (equali(arg1, "name"))
        {
            set_utf8_name(id, arg2);
            return PLUGIN_HANDLED;
        }
    }
    return PLUGIN_CONTINUE
}
 
public client_putinserver(id)
{
    get_user_name(id, username[id], charsmax(username[]))
    set_task(5.0, "rename", id, _, _, "b")
}
 
public rename(id)
{
    new aname[32], uname[32];
 
    if (is_user_alive(id))
    {
        for(new i = 0; i < line; i++)
        {
            ArrayGetString(g_aname, i, aname, charsmax(aname));
            ArrayGetString(g_uname, i, uname, charsmax(uname));
            if (contain(username[id], aname))
            {
                replace_all(username[id], charsmax(username[]), aname, uname);
            }
        }
        set_utf8_name(id, username[id]);
        remove_task(id);
    }
}

public client_disconnect(id)
{
    username[id][0] = '^0';
}
 
public plugin_cfg()
{
    new buffer[256], enname[32], cnname[32];
    new fp = fopen("uname.txt", "rt")
    if (!fp)
        return ;
    while (!feof(fp))
    {
        fgets(fp, buffer, charsmax(buffer))
        trim(buffer)
        if (buffer[0] == ';' || buffer[0] == '/' && buffer[1] == '/') continue
        if (strlen(buffer) > 3 && buffer[0] == -17 && buffer[1] == -69 && buffer[2] == -65)//BOM
        {
            copy(buffer, charsmax(buffer), buffer[3])
        }
        parse(buffer, enname, charsmax(enname), cnname, charsmax(cnname))
        ArrayPushString(g_aname, enname);
        ArrayPushString(g_uname, cnname);
        line++
    }
    fclose(fp);
}