Question

if($_SESSION['periode']){

    if($_SESSION['periode'] == 'Today'){
    $xdate = time() - (1 * 24 * 60 * 60);
    $ydate = time();
    }
    if($_SESSION['periode'] == 'Yesterday'){
    $xdate = time() - (2 * 24 * 60 * 60);
    $ydate = time() - (1 * 24 * 60 * 60);
    }
    if($_SESSION['periode'] == 'This week'){
    $xdate = time() - (7 * 24 * 60 * 60);
    $ydate = time() - (2 * 24 * 60 * 60);
    }
    if($_SESSION['periode'] == 'Older'){
    $xdate = 0;
    $ydate = time() - (7 * 24 * 60 * 60);
    }
    else{
    $xdate = 0;
    $ydate = time();
    }
}
else {
$xdate = 0;
$ydate = time();
}

$tweets = mysql_query("SELECT * FROM messages WHERE content LIKE '%$search%' 
AND content LIKE '%$region%' 
AND time BETWEEN $xdate AND $ydate ORDER BY id DESC LIMIT 10");

问题：所有消息都是从数据库中选择的，而不仅仅是$ xdate和$ ydate之间的消息。

如果我在else语句中手动填写unix时间段（并且没有定义$ _SESSION ['periode']），则从DB中挑选出正确的消息。发生什么事了？

Answer 1

if($_SESSION['periode'] == 'Older'){
    $xdate = 0;
    $ydate = time() - (7 * 24 * 60 * 60);
    }
else{
    $xdate = 0;
    $ydate = time();
    }

如果$ _SESSION ['periode']不是'较旧'，此代码将始终将$ ydate设置为time（）和$ xdate为0，因为此其他与上面的if相关。你需要使用elseif而不是if

代码必须

if($_SESSION['periode']){

    if($_SESSION['periode'] == 'Today'){
    $xdate = time() - (1 * 24 * 60 * 60);
    $ydate = time();
    }
    elseif($_SESSION['periode'] == 'Yesterday'){
    $xdate = time() - (2 * 24 * 60 * 60);
    $ydate = time() - (1 * 24 * 60 * 60);
    }
    elseif($_SESSION['periode'] == 'This week'){
    $xdate = time() - (7 * 24 * 60 * 60);
    $ydate = time() - (2 * 24 * 60 * 60);
    }
    elseif($_SESSION['periode'] == 'Older'){
    $xdate = 0;
    $ydate = time() - (7 * 24 * 60 * 60);
    }
    else{
    $xdate = 0;
    $ydate = time();
    }
}
else {
$xdate = 0;
$ydate = time();
}

'if语句'中的PHP time（）没有传递给MySql查询？

1 个答案: