MYSQL Error 019

Loaded log file: "server_log.txt".----------SA-MP Dedicated Server----------------------v0.3z, (C)2005-2014 SA-MP Team[14:59:01] filterscripts = ""  (string)[14:59:01] [14:59:01] Server Plugins[14:59:01] --------------[14:59:01]  Loading plugin: mysql[14:59:01]   Failed.[14:59:01]  Loading plugin: nativechecker[14:59:01]   Loaded.[14:59:01]  Loaded 1 plugins.[14:59:01] [14:59:01] Filterscripts[14:59:01] ---------------[14:59:01]   Loaded 0 filterscripts.[14:59:01]    Error: Function not registered: 'mysql_connect'[14:59:01]    Error: Function not registered: 'mysql_errno'[14:59:01]    Error: Function not registered: 'mysql_close'[14:59:01] Script[gamemodes/reallife.amx]: Run time error 19: "File or function is not found"[14:59:01] Number of vehicle models: 0