php数组中的多个数据库值

Question

假设你有这个：

while ($record = mysql_fetch_assoc($dbquery)) {
    $arr[] = $record['$columnvalue1'];
}
$arraycount = count($arr);

并且您希望数组中的多个列如何完成？

while ($record = mysql_fetch_assoc($dbquery)) {
    $arr[] = array($record['$columnvalue1'],$record['$columnvalue2']);
}
$arraycount = count($arr);

以上代码错误：

Warning: array_count_values(): Can only count STRING and INTEGER values! 

Answer 1

将多个列值添加到数组

$arr = array();
while ($record = mysql_fetch_array($dbquery)) {
    array_push($arr,$record['$columnvalue1'],$record['$columnvalue2']);
}

查找数组的总和

$arraycount = array_sum($arr); //to find the sum of the array
$num = sizeof($arr); //to find the size of the array