<marquee behavior="alternate" scrolldelay="1" scrollamount="2">
<?php do { ?>
<?php echo $row_Recordset1['Name']; ?>:
<?php echo $row_Recordset1['Text']; ?>
•
<?php } while ($row_Recordset1 = mysql_fetch_assoc($Recordset1)); ?>
</marquee>
<?php mysql_free_result($Recordset1); ?>
打印一个友好的信息给用户，而不是NULL：
<?php echo (NULL === $row_Recordset1['Text']) ? "No value" : $row_Recordset1['Text']; ?>
由于xil3所示，您也可以使用此模式（from the docs）：
// While a row of data exists, put that row in $row as an associative array
// Note: If you're expecting just one row, no need to use a loop
// Note: If you put extract($row); inside the following loop, you'll
// then create $userid, $fullname, and $userstatus
while ($row = mysql_fetch_assoc($result)) {
echo $row["userid"];
echo $row["fullname"];
echo $row["userstatus"];
}
'（$ row_Recordset1 ['Text']！='NULL'）'这是错的！这是正确的：'（$ row_Recordset1 ['Text']！== NULL）'见：http：//php.net/manual/en/language.operators.comparison.php – Dolph 2010-07-06 21:40:38
你有它编写方式现在，$ row_Recordset1在第一次进入循环时将为空。
我已经改写为你：
<marquee behavior="alternate" scrolldelay="1" scrollamount="2">
<?php while($row_Recordset1 = mysql_fetch_assoc($Recordset1)) { ?>
<?php echo (($row_Recordset1['Name'] != null) ? $row_Recordset1['Name'] : 'n/a'); ?>:
<?php echo (($row_Recordset1['Text'] != null) ? $row_Recordset1['Text'] : 'n/a'); ?>
•
<?php } ?>
</marquee>
<?php mysql_free_result($Recordset1); ?>
不是一个真正的问题？怎么会这样？正确的NULL值处理似乎很真实... – EFraim 2010-07-06 21:34:30
[
@EFraim我相信他们指的是$ row_Recordset1 ['Text']，在这种情况下，如果它是NULL，它最终可能只打印一个名称而没有后续文本。问题是关于怎么做，然后我猜... – 2010-07-06 21:36:37