求救(刷装备出现这样提示如何解决)

Fatal error: Call to undefined function mssql_pconnect() in D:\Elysium_Local\tools\htdocs\includes\Mssql.php on line 77
) E; G) B# W% A
6 \) j" ]! `* h4 I" \% g- |怎么解决