所以我试图让用户更新此表,但如果该字段留空,我想数据被单独留下,而不是将其更改为空白字段或空,任何想法?需要保持空白字段与表
<?
elseif ($Code == "U")
{
$sql = "UPDATE movieDATA SET Name = '$Name', Genre = '$Genre', Starring = '$Starring', Year = '$Year', BoxOffice = '$BoxOffice' where IDNO = '$idno'";
$result= mysqli_query($link,$sql) or die(mysqli_error($link));
$showresult = mysqli_query($link,"SELECT * from movieDATA") or die("Invalid query: " . mysqli_error($link));
while ($row = mysqli_fetch_array($showresult))
{
echo ("<br> ID = ". $row["IDNO"] . "<br> NAME = " . $row["Name"] . "<br>");
echo("Genre = " . $row["Genre"] . "<br> Starring = " . $row["Starring"] . "<br>");
echo("Year = " . $row["Year"] . "<br> Box Office = " . $row["BoxOffice"] . "<br>");
}
}
?>
不清楚你的问题。请描述或给出欲望输出。 – RJParikh
我正在更新一个表格,当用户将一个字段留空时,代码会将表格更新为一个空白字段,我希望表格能够保留它所拥有的数据,而不会被空白覆盖! –