Query Error in Function add_service

[globlalways]

                $sql="insert into services (name,status,triggerid,algorithm,showsla,goodsla,sortorder)".
                        " values (".zbx_dbstr($name).",0,$triggerid,$algorithm,$showsla,$goodsla,$sortorder)"; 

The variables $algorithm and $goodsla are of type string so the variables must encapsulated with ' or use the function zbx_dbstr.

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