如何获取所选表的第一行

Question

我需要获取所选表格的第一行和特定列值：

   $ttleft = '';
    $st = $db->query("select * from recipes order by inde asc");
    while($row = $st->fetch()){
        $ttleft .= "<div class='ttleft'>" . $row['title'] . "</div>\n";
        // result: 323 525 727 - that's ok
        $ttop = $row['title'];
        // result: 727 - I need 323
    }

Answer 1

如果您希望ASC订单中的$ttleft和$ttop等于最小

$ttleft = '';
$st = $db->query("select * from recipes order by inde asc");
while($row = $st->fetch()){
    $ttleft .= "<div class='ttleft'>" . $row['title'] . "</div>\n";
    // result: 323 525 727 - that's ok
    if(!isset($ttop)){ 
        $ttop = $row['title']; 
        //result: 323
    }
}

否则，如果您不关心$ttleft只是通过desc命令

的顺序

$st = $db->query("select * from recipes order by inde desc");