Question

我是PHP的新手，请原谅我的烂摊子。对于像我这样的人来说，这是一个非常复杂的查询。

请参阅下面的查询。现在所有结果都显示在$ row ['Post']中;相反，我希望能够做到这样的事情：

$ somerow = $ row ['some_row']; $ somerow2 = $ row ['some_row2'];

然后能够在任何地方使用上面使用的$变量。

我尝试使用以下内容，但它不起作用：

if($rows == 0)
{
print("");

}
elseif($rows > 0)
{
while($row = mysql_fetch_array($query))
{

$postid = htmlspecialchars($row['post_id']);
$postname = htmlspecialchars($row['post_name']);


print("$postname and the id is $postid");
}

}

我怎样才能实现这个目标？

完整查询：

$denied = "Denied";
$userid = Drawn from db for user viewing;

$sql = "SELECT  concat(  (select client_name from user_accounts where 
User_id = tv.User_id), ' commanded ' , title_1  ,' on ', CAST(other_date AS 
CHAR(10)) ) AS Post FROM client_visits tv where User_id in (select contact_id 
from contacts where User_id = '$userid' ) and user_allowed = '$denied'
or User_id in (select User_id from contacts where contact_id = '$userid')
and user_allowed = '$denied'
union
SELECT  concat(  (select client_name from user_accounts where User_id 
= tv.User_id), ' commanded ' , title_2  ,' on ', CAST(other_date AS CHAR(10)) )
AS Post FROM client_notes tv where User_id in (select contact_id from 
contacts where User_id = '$userid' ) and user_allowed = '$denied'
or User_id in (select User_id from contacts where contact_id = '$userid')
and user_allowed = '$denied'
union
SELECT  concat(  (select client_name from user_accounts where User_id 
= tv.User_id), ' commanded ' , title_3  ,' on ', CAST(other_date AS CHAR(10)) )
AS Post FROM client_media tv where User_id in (select contact_id 
from contacts where User_id = '$userid' ) and user_allowed = '$denied'
or User_id in (select User_id from contacts where contact_id = '$userid')
and user_allowed = '$denied'
union
SELECT  concat(  (select client_name from user_accounts where User_id 
= tv.User_id), ' commanded ' , title_4  ,' on ', CAST(other_date AS CHAR(10)) )
AS Post FROM client_stats tv where User_id in (select contact_id from 
contacts where User_id = '$userid' ) and user_allowed = '$denied'
or User_id in (select User_id from contacts where contact_id = '$userid')
and user_allowed = '$denied'
union
SELECT  concat(  (select client_name from user_accounts where User_id 
= tv.User_id), ' commanded ' , title_5 ,' on ', CAST(other_date AS CHAR(10)) )
AS Post FROM client_current_list  tv
where User_id in (select contact_id from contacts where User_id = '$userid' )
and user_allowed = '$denied'
or User_id in (select User_id from contacts where contact_id = '$userid')
and user_allowed = '$denied'
union
SELECT  concat(  (select client_name from user_accounts where User_id 
= tv.User_id), ' commanded ' , title_6 ,' on ', CAST(other_date AS CHAR(10)) )
AS Post FROM client_past  tv
where User_id in (select contact_id from contacts where User_id = '$userid' )
and user_allowed = '$denied'
or User_id in (select User_id from contacts where contact_id = '$userid')
and user_allowed = '$denied'
union
SELECT  concat(  (select client_name from user_accounts where User_id 
= tv.User_id), ' commanded ' , title_7  ,' on ', CAST(other_date AS CHAR(10)) )
AS Post FROM  client_listers  tv
where User_id in (select contact_id from contacts where User_id = '$userid' )
and user_allowed = '$denied'
or User_id in (select User_id from contacts where contact_id = '$userid')
and user_allowed = '$denied'
union
SELECT  concat(  (select client_name from user_accounts where User_id 
= tv.User_id), ' commanded ' , title_8  ,' on ', CAST(other_date AS CHAR(10)) )
AS Post FROM    client_events  tv
where User_id in (select contact_id from contacts where User_id = '$userid' )
and user_allowed = '$denied'
or User_id in (select User_id from contacts where contact_id = '$userid')
and user_allowed = '$denied'
union
SELECT  concat(  (select client_name from user_accounts where User_id 
= tv.User_id), ' commanded ' , title_9  ,' on ', CAST(other_date AS CHAR(10)) )
AS Post FROM    client_admissions  tv
where User_id in (select contact_id from contacts where User_id = '$userid' )
and user_allowed = '$denied'
or User_id in (select User_id from contacts where contact_id = '$userid')
and user_allowed = '$denied'
union
SELECT  concat(  (select client_name from user_accounts where User_id 
= tv.User_id), ' commanded ' , title_10  ,' on ', CAST(other_date AS CHAR(10)) )
AS Post FROM    client_immu  tv
where User_id in (select contact_id from contacts where User_id = '$userid' )
and user_allowed = '$denied'
or User_id in (select User_id from contacts where contact_id = '$userid')
and user_allowed = '$denied'";

$query = mysql_query($sql) or die ("Error: ".mysql_error());

$result = mysql_query($sql);

if ($result == "")
{
echo "";
}
echo "";


$rows = mysql_num_rows($result);

if($rows == 0)
{
print("");

}
elseif($rows > 0)
{
while($row = mysql_fetch_array($query))
{

print($row['Post']);
}
}

Answer 1

您可以将每一行存储在一个数组中，然后选择要使用的行。

if($rows == 0)
{
    print("I have no rows!");
}
else
{
   $allrows = array();
   while($row = mysql_fetch_array($query))
   {
       $allrows[] = $row;
   }
   $row1 = $allrows[0];
   $row2 = $allrows[1];
   echo $row1['Post']; // Print out first row
   echo $row2['Post']; // Print out second row
   var_dump($allrows); // Print out all the rows and the structure of this array
}

如果你想在任何地方使用这些变量，你需要将它们设置为全局变量，但是我建议不要使用全局变量来处理这类事情或一般事物的任何事情。

如何通过创建变量来显示结果？

1 个答案: