Ajax Connection database implementation similar to Baidu search function

1. HTML code part

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">2. PHP code
<?phpinclude (".. /dbda.php "); $db = new Dbda (); $bs = $_post[" BS "]; $key = $_post[" key "];//the keyword if ($bs = = 1) {//Search car name from car table by keyword $sql =" Selec T * from car where Name like '%{$key}% ' "; Echo $db->strquery ($sql);//Call strquery method, direct output string}else{if ($key = =" ")// After the keyword is taken, if it is an empty string, the return is empty, {echo "";} else{$sql = "SELECT name from car where Name like '%{$key}% '"; Echo $db->strquery ($sql);}}? >
　　
Ajax Connection database implementation similar to Baidu search function