在SQL查询，PHP中添加变量和常量的简短语法

Question

有没有更优雅的方式写这样的条件？

WHERE date<'".($date+1)."-07-01'

类似于

WHERE date<'{($date+1)}-07-01' 

Answer 1

$date = 2013;
$truedate = ($date + 1) . "-07-01";

$preparedDb = new DB;
$preparedDb->prepare("SELECT * FROM T1 WHERE date < ?")
   ->execute(array($truedate));