问当字符串连在一起时，PHP似乎会添加反斜杠。

EN

 $searchQuery = "Select * from  <table_name> where Department like
 '".$department. "' and Purchaser_Name like '%".$purchaser. "%' and
 Vendor_Name like '%".$vendor. "%' and User_Name like '%".$requester.
 "%' and PS_Account like '%".$psaccount. "%' ;";

"Select * from  [dbo].[Unicard_Transactions] where Department like  \'%staff%\'  and Purchaser_Name like \'%mordica%\' and Vendor_Name like \'%crucial%\' and User_Name like \'%reeves%\' and PS_Account like \'%739000%\' "