我想发送邮件，当产品从之前、日期和之后过期时，在 php 中，我在 php 中使用了 datediff mysql 函数，但如果产品过期日期类似于 31-1-2012 ，则不同值是不适合我的编码，请帮助如何解决它， 这是我的编码
<?php
$sql = mysql_query("SELECT * FROM supplier_product_det");
$results = mysql_num_rows($sql);
//echo '<script>alert("'.$results.'")</script>';
if ($results > 0)
{
for($i=0;$i<$results;$i++)
{
while($rows = mysql_fetch_array($sql))
{
/* print_r($rows['expired_on']);?><br /> <?*/
$exdate = $rows['expired_on'];
$curdate = date('Y-m-d');
$datedif = mysql_query("select datediff('".$curdate."','".$exdate."')");
while( $date = mysql_fetch_array($datedif) )
{
//echo $date['0'];
//echo $rows['pro_code'];
if (($date['0'])== 1)
{
if(($rows['mailcount'])!== $curdate)
{
$to = $rows['supplier'];
$subject = "Product Expire Intimation";
$message = "Dear Mr/Miss/Mrs
The Following Your Product Expired
Product Code:".$rows['pro_code']."
Product Name:".$rows['product_name']."
Product Expire Date:".$rows['expired_on']."";
$from = "tone@bgrow.com";
$headers = "From:" . $from;
mail($to,$subject,$message,$headers);
$checkdate = mysql_query("update supplier_product_det set mailcount ='".$curdate."' where id='".$rows['id']."'") or die(mysql_error());
}
//echo $rows['supplier'];
}
if (($date['0'])== 0)
{
if(($rows['mailcount'])!== $curdate)
{
$to = $rows['supplier'];
$subject = "Product Expire Intimation";
$message = "Dear Mr/Miss/Mrs
The Following Your Product Expired
Product Code:".$rows['pro_code']."
Product Name:".$rows['product_name']."
Product Expire Date:".$rows['expired_on']."";
$from = "tone@bgrow.com";
$headers = "From:" . $from;
mail($to,$subject,$message,$headers);
$checkdate = mysql_query("update supplier_product_det set mailcount ='".$curdate."' where id='".$rows['id']."'") or die(mysql_error());
}
//echo $rows['supplier'];
}
if (($date['0'])== -1)
{
if(($rows['mailcount'])!== $curdate)
{
$to = $rows['supplier'];
$subject = "Product Expire Intimation";
$message = "Dear Mr/Miss/Mrs
The Following Your Product will Expire Today
Product Code:".$rows['pro_code']."
Product Name:".$rows['product_name']."
Product Expire Date:".$rows['expired_on']."";
$from = "tone@bgrow.com";
$headers = "From:" . $from;
mail($to,$subject,$message,$headers);
$checkdate = mysql_query("update supplier_product_det set mailcount ='".$curdate."' where id='".$rows['id']."'") or die(mysql_error());
}
//echo $rows['supplier'];
}
}
}
}
}
?>
最佳答案
按如下方式编写第二个选择查询
SELECT DATEDIFF($exdate, CURRENT_DATE) as diff;
此外，无需编写单独的选择查询，您可以在第一个查询本身中获得相同的列
SELECT column1, column2, column3, DATEDIFF(expired_on, CURRENT_DATE) as diff
FROM supplier_product_det
您可能需要更改 expired_on 和 CURRENT_DATE 的位置才能获得正确的差异值
关于产品过期时发送 PHP 邮件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/9076663/