底部是我的代码。我的数据库有8列SKU,价格1,价格2,价格3,最低价格,数量1,数量2,数量3
我想在我的脚本中添加一些if语句来检查三个参数。如果是qty>0
目前,我正在从价格1-3导出最小的数字,但它不检查是否存在任何大于0的数量。
这是我的代码:
<?php
if (isset($_SERVER['REMOTE_ADDR'])) {
die(':)');
}
echo "Cron is running";
$hostname = 'localhost';
$username = 'user';
$password = 'pass';
$myDatabase = 'database';
/**
* Defines the name of the table where data is to be inserted
*/
$table = 'mytable';
try {
$conn = new PDO('mysql:host=localhost;dbname='.$myDatabase, $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$stmt = $conn->prepare("SELECT mytable.SKU AS SKU, LEAST(price, price2, price3) AS 'Lowest2'
FROM mytable
");
$stmt->execute();
$filelocation = 'assets/exports/';
$filename = 'export-'.date('Y-m-d H.i.s').'.csv';
$file_export = $filelocation . $filename;
$data = fopen($file_export, 'w');
$csv_fields = array();
$csv_fields[] = 'SKU';
$csv_fields[] = 'Lowest2';
fputcsv($data, $csv_fields);
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
fputcsv($data, $row);
}
} catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage();
}
发布于 2018-08-28 07:52:22
您可以将查询更改为类似以下内容:
SELECT mytable.SKU AS SKU,
LEAST(CASE WHEN qty > 0 THEN price ELSE 99999999999 END,
CASE WHEN qty2 > 0 THEN price2 ELSE 99999999999 END,
CASE WHEN qty3 > 0 THEN price3 ELSE 99999999999 END) AS 'Lowest2'
FROM mytable
我假设所有的价格都在99999999999以下...
https://stackoverflow.com/questions/52048302
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