【发布时间】：2015-12-08 03:23:39
【问题描述】：
请帮忙，我正在尝试创建 php 分页。我第一次运行它显示我指定的行的确切 10 条记录，但是一旦我单击下一步以获得另外 10 条记录，它就会返回：
注意：未定义索引：C:\wamp\www\seore\1.em\r\recordsbycourse.php 第 7 行中的课程 注意：未定义索引：第 8 行 C:\wamp\www\seore\1.em\r\recordsbycourse.php 中的课程 注意：未定义索引：C:\wamp\www\seore\1.em\r\recordsbycourse.php 第 9 行中的课程
代码如下：
<?php
include_once("mysession.php");
include_once("connect.php");
?>
<?php
$course_code = $_POST['course'];
$semester = $_POST['semester'];
$level = $_POST['level'];
$result1 = mysqli_query($con, "SELECT *
FROM srcoe_nce_courses_registration
WHERE course_code = '$course_code'
AND semester = '$semester'")
or die(mysqli_error($con));
$row1=mysqli_fetch_array($result1);
$regno= $row1['regno'];
?>
HTML：
<html>
<head>
<meta http-equiv="Content-Language" content="en-us">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>SRCOE</title>
</head>
<style>
body{ font-family:"Trebuchet MS", Arial, Helvetica, sans-serif;}
a{color:#666;}
#table{
margin: 0 auto;
background: #333;
box-shadow: 5px 5px 5px #888888;
border-radius: 6px 0px 31px 17px;
color: #0C0;
padding: 1px;
}
#table1{margin:0 auto;}
</style>
<center>
<body>
<table border="1" width="950" cellspacing="1">
<tr>
<td width="98%" bordercolorlight="#000080"
bordercolordark="#000080">
<table border="1" width="942" cellspacing="0" cellpadding="0" height="10">
<tr>
<td width="100%" bgcolor="#008000" align="center" height="17"
style="border-style: solid; border-width: 1px" bordercolorlight="#FFFFFF"
bordercolordark="#FFFFFF" nowrap>
<font face="Trebuchet MS">
<img border="0" src="header1.jpg" width="938"
height="100"></font>
</td>
</tr>
</table>
<table border="1" width="100%" cellspacing="0" cellpadding="0" height="32"
id="table1">
<tr>
<td width="99%" bgcolor="#008000" align="center" height="30"
style="border-style: solid; border-width: 1px" bordercolorlight="#FFFFFF"
bordercolordark="#FFFFFF" nowrap>
<?php
include_once("academic_menu.php");
?>
</td>
</tr>
</table>
<tr>
<td align="center" width="98%" bgcolor="#FFFFFF" height="20">
<font size=2 name="Times New Roman" color="Black" border="0" >
<table border="1" cellpadding="5" id="table" bordercolordark="#008000"
style="border-collapse: collapse" width="100%">
<tr>
<th bgcolor="#008000" style="border-left-style: solid; border-left-width: 1px;
border-right-style: solid; border-right-width: 1px; border-top-style: solid;
border-top-width: 1px" >
<font size=2 name="Times New Roman" color="Black" border="0" >
<span style="text-transform: capitalize; text-decoration: none">
<font face="Trebuchet MS" color="#000080">Students Records by
Course</font></span></font>
</th>
</tr>
</table>
<table border="1" cellspacing="0" cellpadding="0" id="table"
bordercolorlight="#FFFFFF" bordercolordark="#008000" style="border-collapse:
collapse" width="100%">
<tr>
<td bgcolor="#FFFFFF" align="left" style="border-style: solid; border-width:
1px; ; padding-left:4px; padding-right:4px; padding-top:1px; padding-bottom:1px"
bordercolorlight="#00FF00" bordercolordark="#008000" bordercolor="#008000">
<font size=2 name="Times New Roman" color="Black" border="0" >
<center>
<form enctype="multipart/form-data" action="marksby_course.php" name="form"
method="post">
<table width="100%">
<tr>
<td width="167" height="24" align="right"
style="border:1px solid #000000; border-
left-style: solid; padding-left:4px; padding-right:4px; padding-top:1px;
padding-bottom:1px" bordercolorlight="#000000"
bordercolordark="#000000" bgcolor="#FFFFFF">
<p style="margin-top: 0; margin-bottom: 0">
<font face="calibri">
<b style="font-family: Trebuchet MS; font-size:
12pt; font-style: normal; font-variant: normal; letter-spacing: normal; line-
height: normal; orphans: auto; text-align: -webkit-center; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -
webkit-text-stroke-width: 0px">
Course Code:</b></font>
</td>
<td width="739" height="24" align="right"
style="border:1px solid #000000; border-
left-style: solid; padding-left:4px; padding-right:4px; padding-top:1px;
padding-bottom:1px" bordercolorlight="#000000"
bordercolordark="#000000" bgcolor="#FFFFFF">
<p align="left"><font face="Trebuchet
MS"><b><span style="font-size: 12pt"><?php echo $row1['course_code']; ?>
</span></b></font><font size=2 name="Times New Roman" color="Black" border="0" >
<input type="hidden" id="dep2" name="course_code"
size="5" value="<?php echo $row1["course_code"]; ?>">
</font>
</td>
</tr>
<tr>
<td width="167" height="24" align="right"
style="border:1px solid #000000; border-
left-style: solid; padding-left:4px; padding-right:4px; padding-top:1px;
padding-bottom:1px" bordercolorlight="#000000"
bordercolordark="#000000" bgcolor="#FFFFFF">
<p style="margin-top: 0; margin-bottom: 0">
<font face="calibri">
<b style="font-family: Trebuchet MS; font-size:
12pt; font-style: normal; font-variant: normal; letter-spacing: normal; line-
height: normal; orphans: auto; text-align: -webkit-center; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -
webkit-text-stroke-width: 0px">
Course Title:</b></font>
</td>
<td width="739" height="24" align="right"
style="border:1px solid #000000; border-
left-style: solid; padding-left:4px; padding-right:4px; padding-top:1px;
padding-bottom:1px" bordercolorlight="#000000"
bordercolordark="#000000" bgcolor="#FFFFFF">
<p align="left"><font face="Trebuchet
MS"><b><span style="font-size: 12pt"><?php echo $row1['course_title']; ?></span></b></font><font size=2 name="Times New Roman" color="Black" border="0" >
</font>
</td>
</tr>
<tr>
<td width="167" height="24" align="right"
style="border:1px solid #000000; border-
left-style: solid; padding-left:4px; padding-right:4px; padding-top:1px;
padding-bottom:1px" bordercolorlight="#000000"
bordercolordark="#000000" bgcolor="#FFFFFF">
<font face="calibri" size="2" name="Times New
Roman" color="Black" border="0">
<b style="font-family: Trebuchet MS; font-size:
12pt; font-style: normal; font-variant: normal; letter-spacing: normal; line-
height: normal; orphans: auto; text-align: -webkit-center; text-indent: 0px;
text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -
webkit-text-stroke-width: 0px">
Semester: </b></font>
</td>
<td width="739" height="24" align="right"
style="border:1px solid #000000; border-
left-style: solid; padding-left:4px; padding-right:4px; padding-top:1px;
padding-bottom:1px" bordercolorlight="#000000"
bordercolordark="#000000" bgcolor="#FFFFFF">
<p align="left"><font face="Trebuchet MS"><b>
<span style="font-size: 12pt"><?php
if ($row1['semester'] ==1 ){
echo "First";
}
if ($row1['semester'] ==2) {
echo "Second";
}
?></span></b></font>
</td>
</tr>
<tr>
<td width="167" height="24" align="right"
style="border:1px solid #000000; border-
left-style: solid; padding-left:4px; padding-right:4px; padding-top:1px;
padding-bottom:1px" bordercolorlight="#000000"
bordercolordark="#000000" bgcolor="#FFFFFF">
<span style="font-size: 12pt; letter-spacing:
normal"><b>
<span style="font-family: Trebuchet
MS">Session</span></b></span><font face="calibri" size="2" name="Times New Roman"
color="Black" border="0"><b style="font-family: Trebuchet MS; font-size: 12pt;
font-style: normal; font-variant: normal; letter-spacing: normal; line-height:
normal; orphans: auto; text-align: -webkit-center; text-indent: 0px; text-
transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-
text-stroke-width: 0px">:</b></font>
</td>
<td width="739" height="24" align="right"
style="border:1px solid #000000; border-
left-style: solid; padding-left:4px; padding-right:4px; padding-top:1px;
padding-bottom:1px" bordercolorlight="#000000"
bordercolordark="#000000" bgcolor="#FFFFFF">
<p align="left">
<font face="calibri" size="2" name="Times New
Roman" color="Black" border="0">
<span style="font-family: Trebuchet MS; font-
size: 12pt; font-variant: normal; letter-spacing: normal; line-height: normal;
orphans: auto; text-align: -webkit-center; text-indent: 0px; text-transform:
none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-
width: 0px; font-weight:700">
2013/2014</span></font>
</td>
</tr>
</table>
<table border="1" cellspacing="0" cellpadding="0" id="table"
bordercolorlight="#FFFFFF" bordercolordark="#008000" style="border-collapse:
collapse" width="100%">
</table>
<table width="100%" style="border-bottom-width: 0px">
<tr>
<td height="21" width="39" bordercolorlight="#000000"
bordercolordark="#000000" style="border:1px solid #000000; padding-left:4px;
padding-right:4px; padding-top:1px; padding-bottom:1px" align="center"
bordercolor="#C0C0C0" bgcolor="#008000" nowrap><b>
<span style="font-size: 11pt">S/No.</span></b>
</td>
<td width="236" height="21" align="left"
bordercolorlight="#000000"
bordercolordark="#000000" style="border:1px solid #000000; padding-left:4px;
padding-right:4px; padding-top:1px; padding-bottom:1px" bgcolor="#008000" nowrap>
<b style="font-size: 11pt; font-style: normal; font-variant: normal; letter-
spacing: normal; line-height: normal; orphans: auto; text-align: -webkit-center;
text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-
spacing: 0px; -webkit-text-stroke-width: 0px">
<font color="#000000" name="Times New Roman" border="0">
Registration No.</font></b>
</td>
<td width="529" height="21" align="left"
bordercolorlight="#000000"
bordercolordark="#000000" style="border:1px solid #000000; padding-left:4px;
padding-right:4px; padding-top:1px; padding-bottom:1px" bgcolor="#008000" nowrap>
<span style="font-size: 11pt"><b>Student's Full
Name</b></span>
</td>
<td width="60" height="21" align="center"
bordercolorlight="#000000"
bordercolordark="#000000" style="border:1px solid #000000; padding-left:4px;
padding-right:4px; padding-top:1px; padding-bottom:1px" bgcolor="#008000" nowrap>
<span style="font-size: 11pt"><b>Level</b></span>
</td>
</tr>
<?PHP
//check if the starting row variable was passed in the URL or not
if (!isset($_GET['startrow']) or !is_numeric($_GET['startrow'])) {
//we give the value of the starting row to 0 because nothing was found in URL
$startrow = 0;
//otherwise we take the value from the URL
} else {
$startrow = (int)$_GET['startrow'];
}
?>
<?php
$query = "SELECT * from srcoe_nce_courses_registration
where
srcoe_nce_courses_registration.course_code='$course_code'
and
srcoe_nce_courses_registration.semester='$semester'
and
srcoe_nce_courses_registration.level='$level'
order by regno, level asc LIMIT $startrow, 10";
$result = mysqli_query($con, $query) or die(mysqli_error($con));
$sri=0;
// Print out the contents of each row into a table
while($row =mysqli_fetch_assoc($result)){
//}
$sri+=1;
?>
<tr>
<td width="39" bordercolorlight="#000000" bordercolordark="#000000"
style="border:1px solid #000000; border-
style: solid; padding-left:4px; padding-right:4px; padding-top:1px; padding-
bottom:1px" align="center" bordercolor="#C0C0C0" bgcolor="#C0C0C0" nowrap>
<span style="font-size: 11pt"><?php echo $sri ; ?>.</span>
</td>
<td width="236" align="left" bordercolorlight="#000000"
bordercolordark="#000000"
style="border:1px solid #000000; padding-left:4px; padding-right:4px; padding-
top:1px; padding-bottom:1px" nowrap>
<font size=2 name="Times New Roman" border="0" color="#000000" >
<span style="margin-top: 0; margin-bottom: 0">
<b style="font-size: 10pt; font-style: normal; font-variant: normal;
letter-spacing: normal; line-height: normal; orphans: auto; text-align: -webkit-
center; text-indent: 0px; text-transform: none; white-space: normal; widows:
auto; word-spacing: 0px; -webkit-text-stroke-width: 0px"><?php echo $row
['regno']; ?></b></span></font>
</td>
<td width="529" align="left" bordercolorlight="#000000"
bordercolordark="#000000"
style="border:1px solid #000000; padding-left:4px; padding-right:4px; padding-
top:1px; padding-bottom:1px" bgcolor="#C0C0C0" nowrap>
<p>
<span style="font-size: 11pt">
<?php echo $row['fullname']; ?></span>
</td>
<td width="60" bordercolorlight="#000000" bordercolordark="#000000"
style="border:1px solid #000000; border-
style: solid; padding-left:4px; padding-right:4px; padding-top:1px; padding-
bottom:1px" align="center" bgcolor="#FFFFFF" nowrap>
<?php echo $row['level']; ?>
</td>
</tr>
<?php
}//end whil loop
?>
</table>
</center>
</font>
</td>
</tr>
<tr>
<td bgcolor="#008000" align="left" bordercolor="#008000" style="border-style:
solid; border-width: 1px; ; padding-left:4px; padding-right:4px; padding-top:1px;
padding-bottom:1px">
<p align="center">
<font size=2 name="Times New Roman" color="Black" border="0" face="Trebuchet MS"
>
<b><font color="#FFFFFF">Copyright </font><font color="#FF0000">(c)
</font><font color="#FFFFFF">
2014 Sa'adatu Rimi College of Education, Kumbotso-Kano. All Rights
Reserved.</font></b></font></td></form>
</tr>
</table>
</font>
</td>
</tr>
</table>
<font face="Trebuchet MS">
</td>
</tr>
</table>
</font>
</font>
<table>
<tr>
<td><?PHP
$prev = $startrow - 10;
//only print a "Previous" link if a "Next" was clicked
if ($prev >= 0)
echo '<a href="'.$_SERVER['PHP_SELF'].'?startrow='.$prev.'">Previous</a>';
?></td>
<td> <?PHP
//now this is the link..
echo '<a href="'.$_SERVER['PHP_SELF'].'?startrow='.($startrow+10).'">Next</a>';
?></td>
</tr>
</table>
</body>
</center>
</html
【问题讨论】：
-
你不会通过分页发送POST数据。
-
您应该将该代码剥离到它的基本部分。
-
这是我遇到问题的地方 $course_code=$_POST['course']; $semester=$_POST['学期']; $level=$_POST['level'];
-
你在哪里发布“课程”变量？当您单击分页链接时，那些已发布的变量不会重新发布，因此是“未定义的”。
标签： php pagination