计算列中所有数字的总和 [英] calculate sum total of all the figures in a column

问题描述

我有一个表，我想计算价格"列中所有值的总和，并回显结果.我已经看到MySQL语句SELECT sum(column)FROM table，但是我发现很难在PHP中使用它并回显结果.

I have a table that I want to calculate the sum total of all the values in column "Price" and echo the results. I have seen MySQL statement SELECT sum(column) FROM table but I am finding it difficult to use it in PHP and echo the results.

推荐答案

mysql_connect($hostname, $username, $password);
mysql_select_db($db);

$sql = "select sum(column) from table";
$q = mysql_query($sql);
$row = mysql_fetch_array($q);

echo 'Sum: ' . $row[0];

根据需要替换变量名称和表/列名称.

Replace variable names and table/column names as needed.

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