php - 使用 PHP 从 SQL 收集本月数据

Question

如何使用本月的 PHP（不是过去 30 天）从 SQL 获取数据。如果这是 1 月 10 日，我想收集 1 月 1 日到 1 月 10 日的数据。

我尝试了以下代码，但它似乎也在获取上个月的数据！

$sql = "SELECT SUM(earnings) 
        FROM tablename 
        WHERE username='$membername' 
        AND date > DATE_SUB(NOW(), INTERVAL 1 MONTH)";

在以下列格式保存的数据库日期中2020-12-26 10:02:41

Answer 1

// set TimeZone, Local or UTC (can make a difference for edge cases)
$month = date('m');
$year = date('Y');
$sql = "SELECT SUM(earnings) FROM tablename
        WHERE username='$membername' AND MONTH(date) = $month
        AND YEAR(date) = $year";

Answer 2

$sql = 'SELECT SUM(earnings)  FROM tablename WHERE username="$membername" and date LIKE 
 CONCAT(YEAR(CURDATE()),"-", MONTH(CURDATE()),"-%")'