Question

我有一张包含以下数据的表格：

 ______________________
| Name |    Date       |
 ----------------------
| Bob  |  2016-09-16   |
| Ben  |  2016-10-03   |
| Sam  |  2016-10-03   |

使用以下内容：

SELECT 
case  
    when datediff( CURDATE(), `the_date`)  = 3 then '3 Days'
    when datediff( CURDATE(), `the_date`)  between 4 and 6 then '4-6 Days'
    when datediff( CURDATE(), `the_date`)  > 6 then  '7 or more days'
end as days,
sum( case  
    when datediff( CURDATE(), `the_date`)  <= 3 then 1 
    when datediff( CURDATE(), `the_date`)  between 4 and 6 then 1
    when datediff( CURDATE(), `the_date`)  > 6 then 1
else 0 
end  ) as tot 
FROM my_table 
GROUP BY
case  
    when datediff( CURDATE(), `the_date`)  <= 3 then '3 Days'
    when datediff( CURDATE(), `the_date`)  between 4 and 6 then '4-6 Days'
    when datediff( CURDATE(),`the_date`) > 6 then  '7 or more days'
end ;

然后使用

echo '<p>'.$row['tot'].'</p>';

我得到以下结果，将行排序为行是否少于3天，4到6天或超过7天。

1
2

理想情况下，我想将一个类应用于p标签，例如class =＆＃34; urgent＆＃34;对于7天以上的橙色，4至6天的橙色，然后绿色长达3天。然后，我想用＃34等唯一文字包装数字;您迫切需要回复结果应用程序＆＃34;

Answer 1

我测试您要查找的值的数据结果，并根据值有条件地指定一个类名。

if ($row['days'] == '7 or more days') {
    $css_class = 'urgent';
} else {
    $css_class = 'normal';
}

printf("<p class='%s'>%s</p>", $css_class, $row['tot']);

我不建议在查询中硬编码您的css类名。不要将数据库查询与表示层混合在一起，这只会在代码中造成混淆和不恰当的耦合。

Answer 2

您可以在查询中添加一列（my_class），并将结果添加到您的p标记

中

SELECT 
case  
    when datediff( CURDATE(), `the_date`)  = 3 then '3 Days'
    when datediff( CURDATE(), `the_date`)  between 4 and 6 then '4-6 Days'
    when datediff( CURDATE(), `the_date`)  > 6 then  '7 or more days'
end as days,
sum( case  
    when datediff( CURDATE(), `the_date`)  <= 3 then 1 
    when datediff( CURDATE(), `the_date`)  between 4 and 6 then 1
    when datediff( CURDATE(), `the_date`)  > 6 then 1
else 0 
end  ) as tot ,
case  
    when datediff( CURDATE(), `the_date`)  = 3 then 'green'
    when datediff( CURDATE(), `the_date`)  between 4 and 6 then 'orange'
    when datediff( CURDATE(), `the_date`)  > 6 then  'red'
end as my_class 


FROM my_table 
GROUP BY
case  
    when datediff( CURDATE(), `the_date`)  <= 3 then '3 Days'
    when datediff( CURDATE(), `the_date`)  between 4 and 6 then '4-6 Days'
    when datediff( CURDATE(),`the_date`) > 6 then  '7 or more days'
end ;  


echo '<p  class="'. $row['my_class'] . '" >'.$row['tot'].'</p>'; your query with the proper class a

将不同的类应用于不同的日期结果

2 个答案: