Question

我不是训练有素的程序员。无论我从网上学到了什么。如果您发现我的代码和问题非常业余，请原谅。

我正在尝试将买家的匹配与来自数据库的卖家数据进行调用，并自动将他们的匹配邮件发送给他们。

当我使用EasyPhp在我的系统上运行此代码时，它会显示“查询为空”。当我在服务器上运行此代码时，它会显示"You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '1' at line 1 "我哪里出错？

<?php

include('adminmaster.htm');

Echo "<center>Mail Matching Properties</center><br><br>";

mysql_connect("localhost", "username","password") or die(mysql_error()); 


mysql_select_db("database") or die(mysql_error()); 

$query= 'SELECT*FROM clientdata WHERE email != "  " AND Transaction="Buyer"';


$result=mysql_query($query);


echo mysql_error();


if (!$result){ die("No Buy results");}

$matchrows=mysql_num_rows($result);

if($matchrows==0){ die("No Buy results");}


while($info = mysql_fetch_array($result))


$Price1= $info['Price']+($info['Price']*10/100);

$Price2 = $info['Price']-($info['Price']*10/100);

$una=$info['username'];

$query2='SELECT*FROM clientdata WHERE email!=" " AND Transaction="Seller"';


$result2=mysql_query($query2);


echo mysql_error();


$matchrows2=mysql_num_rows($result2);


if($matchrows2==0){ die("Sell Data Not Found");}


if(!$result2)

{die("Sell Data Not Found");}

while($info2=mysql_fetch_array($result2))

{

if ($info['Detail']==$info2['Detail'])

{

if ($info['Location']==$info2['Location'])

{

if ($Price1 >= $info2['Price'])
{

if ($Price2 <= $info2['Price'])

{

if ($info['username']!=$info2['username'])

{

echo mysql_error();

echo "<table width=600 border = 1 style='text-align:left';>

<tr>
<td><b>Clients</b></td>
<td><b><font color='maroon'>BUYER</font></b></td>
<td><b><font color='maroon'>SELLER</font></b></td>
</tr>

<tr>
<td><b>Date Posted:</b></td>
<td>$info[Date]</td>
<td>$info2[Date]</td>
</tr>

<tr>
<td><b>Title:</b></td>
<td>$info[propheading]</td>
<td>$info2[propheading]</td>
</tr>

<tr>
<td><b>Transaction:</b></td>
<td>$info[Transaction]</td>
<td>$info2[Transaction]</td>
</tr>
<tr>
<td style='background-color:lightgrey'><b>Detail:</b></td>
<td style='background-color:lightgrey'>$info[Detail]</td>
<td style='background-color:lightgrey'>$info2[Detail]</td>
</tr>
<tr>
<td style='background-color:lightgrey'><b>Price:</b></td>
<td style='background-color:lightgrey'>$info[Price]</td>
<td style='background-color:lightgrey'>$info2[Price]</td>
</tr>

<tr>
<td><b>Additional Data:</b></td>
<td>$info[AdditionalData]</td>
<td>$info2[AdditionalData]</td>
</tr>


<tr>
<td><b>Location:</b></td>
<td>$info[Location]</td>
<td>$info2[Location]</td>
</tr>
<tr>
<td><b>Agent/Individual:</b></td>
<td>$info[Agent_Ind]</td>
<td>$info2[Agent_Ind]</td>
</tr>
<tr>
<td><b>Name:</b></td>
<td>$info[Title] $info[firstname] $info[lastname]</td>
<td>$info2[Title] $info2[firstname] $info2[lastname]</td>
</tr>
<tr>
<td><b>Phone:</b></td>
<td>$info[Phone]</td>
<td>$info2[Phone]</td>
</tr>
<tr>
<td><b>Email:</b></td>
<td>$info[Email]</td>
<td>$info2[Email]</td></tr>

</table>";

$tomail=$info2['Email'];

if   ($tomail=="anitgopinath@gmail.com"|$tomail=="anit@landshoppe.com"|$tomail=="info@landshoppe.com")  {continue;}

$headers ="From:info@landshoppe.com"."\r\n";

$headers .='Bcc:anit@landshoppe.com'."\n";
$headers .= 'MIME-Version: 1.0'."\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1'."\r\n";
$subject ="You have a Property Match !";

$message="<html></head><body>

<table width=600 border = 1 style='text-align:left';>

<caption><b><font color='maroon'>YOUR PROPERTY MATCH!</font></b></caption>

<tr>
<td><b>Date Posted:</b></td>
<td>$info[Date]</td>
</tr>

<tr>
<td><b>Title:</b></td>
<td>$info[propheading]</td>
</tr>
<tr>
<td><b>Transaction:</b></td>
<td>$info[Transaction]</td>
</tr>
<tr>
<td style='background-color:lightgrey'><b>Detail:</b></td>
<td style='background-color:lightgrey'>$info[Detail]</td>
</tr>
<tr>
<td style='background-color:lightgrey'><b>Price:</b></td>
<td style='background-color:lightgrey'>$info[Price]</td>
</tr>

<tr><td><b>Additional Data:</b></td><td>$info[AdditionalData]</td></tr>
<tr><td><b>Location:</b></td><td>$info[Location]</td></tr>
<tr><td><b>Agent/Individual:</b></td><td>$info[Agent_Ind]</td></tr>
<tr><td><b>Name:</b></td><td>$info[Title] $info[firstname] $info[lastname]</td></tr>
<tr><td><b>Phone:</b></td><td>$info[Phone]</td></tr>
<tr><td><b>Email:</b></td><td>$info[Email]</td></tr>

</table></body><html>";

echo $tomail."<br>";
echo "$message"."<br>";

$mailresult=mysql_query(mail($tomail,$subject,$message,$headers));

if ($mailresult){echo "Mailed<br>";}else{echo "Not Mailed !<br>";}

echo "**********************************Seller Match**************************************************<br>";


$tomail2=$info['Email'];

if   ($tomail2=="anitgopinath@gmail.com"|$tomail2=="anit@landshoppe.com"|$tomail2=="info@landshoppe.com"){continue;}

$headers ="From:info@landshoppe.com"."\r\n";

$headers .='Bcc:anit@landshoppe.com'."\n";
$headers .= 'MIME-Version: 1.0'."\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1'."\r\n";
$subject ="You have a Property Match !";

$message="<html></head><body>

<table width=600 border = 1 style='text-align:left';>

<caption><b><font color='maroon'>YOUR PROPERTY MATCH!</font></b></caption>

<tr>
<td><b>Date Posted:</b></td>
<td>$info2[Date]</td>
</tr>

<tr>
<td><b>Title:</b></td>
<td>$info2[propheading]</td>
</tr>

<tr>
<td><b>Transaction:</b></td>
<td>$info2[Transaction]</td>
</tr>
<tr>
<td style='background-color:lightgrey'><b>Detail:</b></td>
<td style='background-color:lightgrey'>$info2[Detail]</td>
</tr>
<tr>
<td style='background-color:lightgrey'><b>Price:</b></td>
<td style='background-color:lightgrey'>$info2[Price]</td>
</tr>

<tr>
<td><b>Additional Data:</b></td>
<td>$info2[AdditionalData]</td>
</tr>

<tr>
<td><b>Location:</b></td>
<td>$info2[Location]</td>
</tr>
<tr>
<td><b>Agent/Individual:</b></td>
<td>$info2[Agent_Ind]</td>
</tr>
<tr>
<td><b>Name:</b></td>
<td>$info2[Title] $info2[firstname] $info2[lastname]</td>
</tr>
<tr>
<td><b>Phone:</b></td>
<td>$info2[Phone]</td>
</tr>
<tr>
<td><b>Email:</b></td>
<td>$info2[Email]</td>
</tr>

</table></body><html>";

echo $tomail2."<br>";
echo "$message"."<br>";

$mailresult2=mysql_query(mail($tomail2,$subject,$message,$headers));

if ($mailresult2){echo "Mailed<br>";}else{echo "Not Mailed !<br>";}

echo "**********************************Buyer Match**************************************************<br>";

}
}
}
}
}
}
}
?>

Answer 1

首先，在SQL请求中指定字符串文字时，您应该使用单个qoutes：

$query= "SELECT*FROM clientdata WHERE email != '  ' AND Transaction='Buyer'";

Answer 2

不想听起来很粗鲁，但你最好重新设计你的代码，现在就乱了。从一个简单的“分而治之”方法开始：标记执行ONE且只有一件事的每个代码块 - 并分成单个函数（仅在主脚本中保留其调用）。您会立即注意到它在读取和更新代码时会产生的差异。

您谈到的错误是由以下行引起的：

$mailresult=mysql_query(mail($tomail,$subject,$message,$headers));

... mail函数的结果是boolean。当通过mysql_query转换为字符串时，它是一个空字符串或'1';当然，它们都不是有效的查询。如果你需要检查结果，那只是......

$mailresult=mail($tomail,$subject,$message,$headers);

同样，错误本身很简单 - 但它隐藏在您的代码中，以至于五个或更多SO用户未能找到它。这就是代码需要重组的原因。

sql错误'查询为空'

2 个答案: