PHP不存储查询结果

Question

对于特定查询

SELECT MAX(theCount), day 
    FROM (SELECT FK_Hour, day As day, Count(FK_Hour) As theCount 
        FROM (Select slottime.FK_Hour, time.day 
            From slottime INNER JOIN time ON slottime.FK_Hour = time.Hour ) 
            As C GROUP By FK_Hour 
        ) 
        AS counts GROUP By day

数据库返回

但是在运行php代码时

$timequery = array();    
try {
       $sth = $dbh->prepare("SELECT MAX(theCount), day 
                            FROM (SELECT FK_Hour, day As day, Count(FK_Hour) As theCount 
                                FROM (Select slottime.FK_Hour, time.day 
                                    From slottime INNER JOIN time ON slottime.FK_Hour = time.Hour ) 
                                    As C GROUP By FK_Hour 
                                ) 
                                AS counts GROUP By day 
                            ");
   $sth->execute();


   while ($timequery = $sth->fetch(PDO::FETCH_ASSOC)) {
   $timequery[] = $results;
   }
   echo("trying  ");
   print_r($timequery);
   echo("  tried");
} 

输出仅为

  

尝试尝试

Answer 1

$结果似乎未初始化...更改代码如下所示

while ($results = $sth->fetch(PDO::FETCH_ASSOC))