第一种：数组
$allbrand = array();
while ($testingrow = mysqli_fetch_array ($testingquery)) {
$allbrand[] = $testingrow[2];
}
第二种：字符串
$allbrand = '';
while ($testingrow = mysqli_fetch_array ($testingquery)) {
$allbrand .= $testingrow[2]."
";
}
请采纳，谢谢
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