PHP簡易検索機能実装説明

if(isset($_GET["searchText"]))
{
	$searchText = $_GET["searchText"];
	$searchAddSql = $searchAddSql." and (book_number like '%".$searchText."%' 
	or book_name like '%".$searchText."%'
	or book_sum like '%".$searchText."%'
	or book_author like '%".$searchText."%')";
}

$news_sql="SELECT * from books where 1=1 and (book_number like '%中%' 
or book_name like '%中%' 
or book_sum like '%中%' 
or book_author like '%中%' ) order by book_number"；