[英]fetch a result of an alias in a query
i have the following query:我有以下查询:
$timecheck = $db->query("SELECT (B <= NOW()) AS var FROM table1 WHERE x='$x'");
while ($row = $db->fetch_object()){
if ($row->var != 0){
$updatestatus = $db->query("UPDATE table2 SET abc='1' WHERE x='$x'");
}
}
and get the following errormessage:并得到以下错误信息:
Fatal error: Call to undefined method mysqli::fetch_object()
that relates to this line:与这一行有关:
while ($row = $db->fetch_object()){
i also was trying to use:我也试图使用:
while ($row = $db->fetch_object($timecheck)){
without any success.没有任何成功。 So in the manual is nothing written about how to use an alias by fetch-method.所以在手册中没有写任何关于如何通过获取方法使用别名的内容。
it would be great if there is someone who could tell me what am i doing wrong.如果有人可以告诉我我做错了什么,那就太好了。 thanks a lot.多谢。
Try this试试这个
Mysqli::query
does not have fetch_object
method it would return mysqli_result::fetch_assoc
for more information please look at Mysqli::query
没有fetch_object
方法,它会返回mysqli_result::fetch_assoc
有关更多信息,请查看
http://www.php.net/manual/en/mysqli.query.php http://www.php.net/manual/en/mysqli.query.php
http://php.net/manual/en/mysqli-result.fetch-assoc.php http://php.net/manual/en/mysqli-result.fetch-assoc.php
http://www.php.net/manual/en/mysqli-result.fetch-object.php http://www.php.net/manual/en/mysqli-result.fetch-object.php
Example:例子:
$result = $db->query ( "SELECT (B <= NOW()) AS var FROM table1 WHERE x='$x'" );
while ( $row = $result->fetch_object () ) {
if ($row->var != 0) {
$updatestatus = $db->query ( "UPDATE table2 SET abc='1' WHERE x='$x'" );
}
}
Thanks谢谢
:) :)
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