我在搜索某些东西时会用到这个:
$sql = mysqli_query($con,"SELECT * FROM persons WHERE active != 'No' AND LOWER(firstname) LIKE '%$find%' ORDER BY date DESC LIMIT $start, $limit");
我想加上一个额外的搜索参数
$sql = mysqli_query($con,"SELECT * FROM persons WHERE active != 'No' AND LOWER(firstna