PHP到MySQL数据检索
我正在尝试从具有4行的mysql数据库中检索数据。我需要使用php将其作为表格发送到电子邮件中。我为此构建了一个脚本，但是问题是该脚本不是通过电子邮件发送所有行，而是通过电子邮件发送最后一行，或者如果我在数据库查询中使用“ where”传递了特定参数。
感谢任何人的帮助。预先谢谢你。
还附带了db输出和php代码。
<?php
date_default_timezone_set('America/Los_Angeles');
$today = date("j-F-Y g:i:s a"); // March 10, 2001, 5:16 pm
// DB Connect.
$db_host = 'localhost'; // Server Name
$db_user = 'root'; // Username
$db_pass = 'test123#'; // Password
$db_name = 'util'; // Database Name
$conn = mysqli_connect($db_host, $db_user, $db_pass, $db_name);
if (!$conn) {
die ('Failed to connect to MySQL: ' . mysqli_connect_error());
}
$sql = "select * from srvr1";
$result = mysqli_query($conn, $sql);
if (!$result) {
die ('SQL Error: ' . mysqli_error($conn));
}
if(mysqli_num_rows($result) > 0){
while($row = mysqli_fetch_array($result)){
$File_system = $row[0];
$IP = $row[1];
$Capacity = $row[2];
$Available = $row[3];
$Used = $row[4];
$Percentage = $row[5];
# Compare Percentage and alert.
$subject = "Critical | FH NetApp-NetBackup Space Utilization..!";
$message1 = "
<html>
<body>
<p> Hi Team,<br><br> The Server utilization is <b style='color:red'> critical</b>. Please find the below utilization details.</p>
<table>
<tr>
<th> File_System </th>
<th> IP </th>
<th> Total_capacity </th>
<th> Available_Capacity </th>
<th> Used_Capacity </th>
<th> Percentage </th>
</tr>
<tr>
<td> $File_system </td>
<td> $IP </td>
<td> $Capacity </td>
<td> $Available </td>
<td> $Used </td>
<td> $Percentage </td>
</tr>
</table>
<p style='font-size:15px'> Data generated at:<b> $today EST.</b><p>
<p>Regards, <br>
Backup Team. </p>
</body>
</html>";
$headers[] = 'From: Srvr19utilization@util.com'; // Sender's Email
$headers[] = 'Cc: santosh.kowshik20@gmail.com'; // Carbon copy to Sender
$headers[] = 'MIME-Version: 1.0 charset=".$encoding."';
$headers[] = 'Content-type: text/html; charset=iso-8859-1';
// Message lines should not exceed 70 characters (PHP rule), so wrap it
$message = wordwrap($message1, 70);
// Send Mail By PHP Mail Function
mail($to, $subject, $message, implode("\r\n", $headers));
}
}
?>
我一直在尝试在代码中循环，这无济于事。
3 个答案:
答案 0 :(得分：1)
尝试重新整理一下代码。首先创建html的“顶部”，然后遍历所有结果并将其附加到html，然后完成html。
我还没有测试下面的代码，但是它应该可以工作：-）
<?php
date_default_timezone_set('America/Los_Angeles');
$today = date("j-F-Y g:i:s a"); // March 10, 2001, 5:16 pm
// DB Connect.
$db_host = 'localhost'; // Server Name
$db_user = 'root'; // Username
$db_pass = 'test123#'; // Password
$db_name = 'util'; // Database Name
$conn = mysqli_connect($db_host, $db_user, $db_pass, $db_name);
if (!$conn) {
die('Failed to connect to MySQL: ' . mysqli_connect_error());
}
$sql = "select * from srvr1";
$result = mysqli_query($conn, $sql);
if (!$result) {
die('SQL Error: ' . mysqli_error($conn));
}
if (mysqli_num_rows($result) > 0) {
$subject = "Critical | FH NetApp-NetBackup Space Utilization..!";
$message1 = "
<html>
<body>
<p> Hi Team,<br><br> The Server utilization is <b style='color:red'> critical</b>. Please find the below utilization details.</p>
<table>
<tr>
<th> File_System </th>
<th> IP </th>
<th> Total_capacity </th>
<th> Available_Capacity </th>
<th> Used_Capacity </th>
<th> Percentage </th>
</tr>";
while ($row = mysqli_fetch_array($result)) {
$File_system = $row[0];
$IP = $row[1];
$Capacity = $row[2];
$Available = $row[3];
$Used = $row[4];
$Percentage = $row[5];
# Compare Percentage and alert.
$message1 .= "
<tr>
<td> $File_system </td>
<td> $IP </td>
<td> $Capacity </td>
<td> $Available </td>
<td> $Used </td>
<td> $Percentage </td>
</tr>";
}
$message1 .= "</table>";
$message1 .= "<p style='font-size:15px'> Data generated at:<b> $today EST.</b><p>
<p>Regards, <br>
Backup Team. </p>
</body>
</html>";
$headers[] = 'From: Srvr19utilization@util.com'; // Sender's Email
$headers[] = 'Cc: santosh.kowshik20@gmail.com'; // Carbon copy to Sender
$headers[] = 'MIME-Version: 1.0 charset=".$encoding."';
$headers[] = 'Content-type: text/html; charset=iso-8859-1';
// Message lines should not exceed 70 characters (PHP rule), so wrap it
$message = wordwrap($message1, 70);
// Send Mail By PHP Mail Function
mail($to, $subject, $message, implode("\r\n", $headers));
}
?>
关于条件格式
不用担心。您可以尝试使用嵌套的三元（if / else的简写：-））
上述代码的示例片段：
...
$Percentage = $row[5];
$color = ($Percentage > 90) ? '#FCE901' : (($Percentage > 85) ? '#FF0000' : '#00E526');
# Compare Percentage and alert.
$message1 .= "
<tr>
<td> $File_system </td>
<td> $IP </td>
<td> $Capacity </td>
<td> $Available </td>
<td> $Used </td>
<td style=\"background-color:$color\"> $Percentage </td>
</tr>";
答案 1 :(得分：0)
问题出在数据库端。根据您的var_dump输出：
object(mysqli_result)#2 (5) { ["current_field"]=> int(0) ["field_count"]=> int(6) ["lengths"]=> NULL ["num_rows"]=> int(1) ["type"]=> int(0) }
您仅返回1个结果。您应该从这里开始。也许您未引用自己认为的表。谁知道，但您php看起来不错。调查您的数据库
答案 2 :(得分：0)
您的PHP不好，您给了答案
<?php
date_default_timezone_set('America/Los_Angeles');
$today = date("j-F-Y g:i:s a"); // March 10, 2001, 5:16 pm
// DB Connect.
$db_host = 'localhost'; // Server Name
$db_user = 'root'; // Username
$db_pass = 'test123#'; // Password
$db_name = 'util'; // Database Name
$conn = mysqli_connect($db_host, $db_user, $db_pass, $db_name);
if (!$conn)
{
die ('Failed to connect to MySQL: ' . mysqli_connect_error());
}
$sql = "select * from srvr1";
$result = mysqli_query($conn, $sql);
if (!$result)
{
die ('SQL Error: ' . mysqli_error($conn));
}
if(mysqli_num_rows($result) > 0)
{
while($row = mysqli_fetch_array($result))
{
$File_system = $row[0];
$IP = $row[1];
$Capacity = $row[2];
$Available = $row[3];
$Used = $row[4];
$Percentage = $row[5];
以上您有1行数据的百分比 在下面，您可以使用它来确定电子邮件主题-每封电子邮件仅1个主题-因此每封电子邮件1行数据
# Compare Percentage and alert.
if($Percentage > 90)
{
$subject = "Critical | FH NetApp-NetBackup Space Utilization..!";
$message1 = "
<html>
<head>
<style>
body,h6 {
font-family: Segoe UI,Helvetica,courier;
}
th {
border: 1px solid black;
border-collapse: collapse;
background-color: #04D1E8;
padding: 10px;
text-align: center;
}
td {
border: 1px solid black;
border-collapse: collapse;
padding: 10px;
text-align: center;
}
.cri {
background-color: #FF0000;
}
</style>
</head>
<body>
<p> Hi Team,<br><br> The Server utilization is <b style='color:red'> critical</b>. Please find the below utilization details.</p>
<table>
<tr>
<th> File_System </th>
<th> IP </th>
<th> Total_capacity </th>
<th> Available_Capacity </th>
<th> Used_Capacity </th>
<th> Percentage </th>
</tr>
<tr>
<td> $File_system </td>
<td> $IP </td>
<td> $Capacity </td>
<td> $Available </td>
<td> $Used </td>
<td class='cri'> $Percentage </td>
</tr>
</table>
<p style='font-size:15px'> Data generated at:<b> $today EST.</b><p>
<p>
Regards, <br>
Backup Team.
</p>
</body>
</html>
";
$headers[] = 'From: Srvr19utilization@util.com'; // Sender's Email
$headers[] = 'Cc: santosh.kowshik20@gmail.com'; // Carbon copy to Sender
$headers[] = 'MIME-Version: 1.0 charset=".$encoding."';
$headers[] = 'Content-type: text/html; charset=iso-8859-1';
// Message lines should not exceed 70 characters (PHP rule), so wrap it
$message = wordwrap($message1, 70);
// Send Mail By PHP Mail Function
mail($to, $subject, $message, implode("\r\n", $headers));
}
else if($Percentage > 85)
{
$subject = "Warning | FH NetApp-NetBackup Space Utilization..!";
$message1 = "
<html>
<head>
<style>
body,h6{
font-family: Segoe UI,Helvetica,courier;
}
th {
border: 1px solid black;
border-collapse: collapse;
background-color: #04D1E8;
padding: 10px;
text-align: center;
}
td {
border: 1px solid black;
border-collapse: collapse;
padding: 10px;
text-align: center;
}
.war {
background-color: #FCE901;
}
</style>
</head>
<body>
<p> Hi Team,<br><br> The Server utilization is <b style='color:yellow'> above normal</b>. Please find the below utilization details.</p>
<table>
<tr>
<th> File_System </th>
<th> IP </th>
<th> Total_capacity </th>
<th> Available_Capacity </th>
<th> Used_Capacity </th>
<th> Percentage </th>
</tr>
<tr>
<td> $File_system </td>
<td> $IP </td>
<td> $Capacity </td>
<td> $Available </td>
<td> $Used </td>
<td class='war'> $Percentage </td>
</tr>
</table>
<p style='font-size:15px'> Data generated at:<b> $today EST.</b></p>
<p>
Regards, <br>
Backup Team.
</p>
</body>
</html>
";
$headers[] = 'From: Srvr19utilization@util.com'; // Sender's Email
$headers[] = 'Cc: santosh.kowshik20@gmail.com'; // Carbon copy to Sender
$headers[] = 'MIME-Version: 1.0 charset=".$encoding."';
$headers[] = 'Content-type: text/html; charset=iso-8859-1';
// Message lines should not exceed 70 characters (PHP rule), so wrap it
$message = wordwrap($message1, 70);
// Send Mail By PHP Mail Function
mail($to, $subject, $message, implode("\r\n", $headers));
}
else
{
$subject = "Normal | FH NetApp-NetBackup Space Utilization..!";
$message1 = "
<html>
<head>
<style>
body,h6{
font-family: Segoe UI,Helvetica,courier;
}
th {
border: 1px solid black;
border-collapse: collapse;
background-color: #04D1E8;
padding: 10px;
text-align: center;
}
td {
border: 1px solid black;
border-collapse: collapse;
padding: 10px;
text-align: center;
}
.nor {
background-color: #00E526;
}
</style>
</head>
<body>
<p> Hi Team,<br><br> The Server utilization is <b style='color:green'> normal. </b>Please find the below utilization details.</p>
<table>
<tr>
<th> File_System </th>
<th> IP </th>
<th> Total_capacity </th>
<th> Available_Capacity </th>
<th> Used_Capacity </th>
<th> Percentage </th>
</tr>
<tr>
<td> $File_system </td>
<td> $IP </td>
<td> $Capacity </td>
<td> $Available </td>
<td> $Used </td>
<td class='nor'> $Percentage </td>
</tr>
</table>
<p style='font-size:15px'> Data generated at:<b> $today EST.</b></p>
<p>
Regards, <br>
Backup Team.
</p>
</body>
</html>
";
$headers[] = 'From: Srvr19utilization@util.com'; // Sender's Email
$headers[] = 'Cc: santosh.kowshik20@gmail.com'; // Carbon copy to Sender
$headers[] = 'MIME-Version: 1.0 charset=".$encoding."';
$headers[] = 'Content-type: text/html; charset=iso-8859-1';
// Message lines should not exceed 70 characters (PHP rule), so wrap it
$message = wordwrap($message1, 70);
// Send Mail By PHP Mail Function
mail($to, $subject, $message, implode("\r\n", $headers));
}
}
}
?>
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