PHP error happened

Technical information
Error type2
Error descriptionmysqli_query() expects parameter 1 to be mysqli, string given
URLwww.compilerjobs.com/db/jobs_view.php?editid1=246
Error file/home2/teamsilv/public_html/compilerjobs/db/include/dbconnection.php
Error line50
SQL queryselect ID, Company, Title, Description, HowToApply, Website, DateAdded, Title AS Job, LoginID, Location, Phone, Fax, Email, Contact FROM jobs where ID=246