任何想法如何在$ row [] mysqli_query中包含变量?
我迄今为止尝试的是:
1
$result = mysqli_query($connection, "SELECT ".$var." AS Variables, COUNT(*) FROM data GROUP BY '$var'");
while($row = mysqli_fetch_array($result)) {
echo $row['Variables'];
echo $row['COUNT(*)'];
}
2
$result = mysqli_query($connection, "SELECT '$var', COUNT(*) FROM data GROUP BY '$var'");
while($row = mysqli_fetch_array($result)) {
echo $row[$var];
echo $row['COUNT(*)'];
}
另外,我尝试了所有组合
echo $row[$var];
echo $row["$var"];
echo $row['$var'];
尝试以下:
$result = mysqli_query($connection, "SELECT ".$var." AS Variables,
COUNT(*) AS count FROM data GROUP BY '$var'");
while($row = mysqli_fetch_array($result)) {
echo $row['Variables'];
echo $row['count'];
}