在各种单元格中显示数组值

Question

我想显示具体要求的名称和日期。例如，要求oracle DBA在各种日期有3个提交。表'require'的字段为e_id和req_id。

第二个表'submittal'有req_id，submittal和date字段 我想根据需要在一列中显示提交，在另一列显示日期。

我尝试使用数组值显示

 $sub="select a.*,b.c_name from requirement as a,client as b where a.c_id=b.c_id and e_id='2'";
 $sub1=mysql_query($sub);

 while($sfet=mysql_fetch_assoc($sub1))
 {
     echo '<tr>';
     $req_id=$sfet['req_id'];
     echo '<td>'.$sfet['c_name'].'</td>';
     echo '<td>'.$sfet['title'].'</td>';
     $was="select * from resume where req_id='$req_id'";
     $was1=mysql_query($was);

     while($wfet=mysql_fetch_assoc($was1))
     {
         $array[] = $wfet;
     }

     echo '<td>';
     echo $array[]['username'];
     echo '</td>';

     echo '<td>';
     echo $array[]['date'];
     echo '</td>';
     echo '</tr>';
}

Answer 1

按如下方式更改您的代码：

while($sfet=mysql_fetch_assoc($sub1))
{
     echo '<tr>';
     $req_id=$sfet['req_id'];
     echo '<td>'.$sfet['c_name'].'</td>';
     echo '<td>'.$sfet['title'].'</td>';
     $was="select * from resume where req_id='$req_id'";
     $was1=mysql_query($was);

     $username = $date = [];
     while($wfet=mysql_fetch_assoc($was1))
     {
         $username[] = $wfet['username'];
         $date[] = $wfet['date'];
     }

     echo '<td>';
     echo implode('<br>',$username);
     echo '</td>';

     echo '<td>';
     echo implode('<br>',$date);
     echo '</td>';
     echo '</tr>';
}

修改 更好的解决方案是使用GROUP_CONCAT，如下所示：

$sub = "SELECT a.*, b.c_name, 
        GROUP_CONCAT(c.username ORDER BY c.date SEPARATOR '<br>') AS g_username,
        GROUP_CONCAT(c.date ORDER BY c.date SEPARATOR '<br>') AS g_date 
    FROM requirement as a 
    JOIN client as b ON a.c_id=b.c_id 
    JOIN resume c ON a.req_id=c.req_id GROUP BY a.req_id";

$sub1=mysql_query($sub);
while($sfet=mysql_fetch_assoc($sub1))
{
    echo '<tr>';
    $req_id=$sfet['req_id'];
    echo '<td>'.$sfet['c_name'].'</td>';
    echo '<td>'.$sfet['title'].'</td>';
    echo '<td>'.$sfet['g_username'].'</td>';
    echo '<td>'.$sfet['g_date'].'</td>';
    echo '</tr>';
}