Use handled without main, plugins down won't be called.
Here's:
PHP Code:
new cv_chat
public plugin_init()
{
cv_chat = register_cvar("amx_chat_enable", "1")
register_plugin(PLUGIN, VERSION, AUTHOR)
register_clcmd( "say", "Cmd_Say" )
}
public Cmd_Say()
{
if(!get_pcvar_num(cv_chat))
return PLUGIN_HANDLED
}