嗯,我一直在仅基于通过GET方法提供的Regno和Subcode检索数据。
我只是通过使用printf stmt尝试了没有表格式的输出。
<?php
$regNo=$_GET['Regno'];
$Subjectcode=$_GET['Subjectcode'];
(然后是连接部分)
$sql="SELECT Co1,Co2, Co3, Co4, Co5, Co6 FROM ab where Regno='$regNo' and
Subcode='$Subjectcode'";
$result=mysqli_query($con,$sql);
// Associative array
$row=mysqli_fetch_array($result,MYSQLI_ASSOC);
?>
<div>
<table >
<tr>
<th>Co1</th>
<th>Co2</th>
<th>Co3</th> // these get displayed
<th>Co4</th>
<th>Co5</th>
<th>Co6</th>
</tr>
<?php
If (mysqli_num_rows($result) > 0) {
while ($row = mysqli_fetch_array($result)) {
?>
<tr>
<td><?php echo $row['Co1']; ?></td>
<td><?php echo $row['Co2']; ?></td>
<td><?php echo $row['Co3']; ?></td> // these don't get displayed
<td><?php echo $row['Co4']; ?></td>
<td><?php echo $row['Co5']; ?></td>
<td><?php echo $row['Co6']; ?></td>
</tr>
<?php
}
}
?>
</tr>
</table>
</div>
输出应为以表格格式显示的数据。但是我得到的输出却什么都没有!
编辑1
我也尝试过此代码
<?php
error_reporting(E_ALL ^ E_DEPRECATED);
// 1. Enter Database details
$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$dbname = 'all';
// Create connection
$conn = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$reg_no = isset($_POST['Regno']) ? $_POST['Regno'] : '';
$sql = "SELECT * FROM ab WHERE Regno='".$reg_no."'";
while ($rows = mysqli_fetch_array($sql)) {
$Sem = $rows['Sem'];
$Co1 = $rows['Co1'];
$Co2 = $rows['Co2'];
$Co3 = $rows['Co3'];
$Co4 = $rows['Co4'];
$Co5 = $rows['Co5'];
$Co6 = $rows['Co6'];
$Subname = $rows['Subname'];
$Externalmarks = $rows['Externalmarks'];
echo
"$Subname<br>$Sem<br>$Co1<br>$Co2<br>$Co3<br>$Co4<br>$Co5<br>$Co6<br>
$Externalmarks<br><br>";
}
?>
答案 0 :(得分:-1)
好的,因此在您进行编辑时,在将SQL传递到mysqli_fetch_array()之前,您没有使用mysqli_query(),因此它不会返回任何结果。
以下是一些参考资料: http://php.net/manual/en/mysqli-result.fetch-array.php
<?php
error_reporting(E_ALL ^ E_DEPRECATED);
// 1. Enter Database details
$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$dbname = 'all';
// Create connection
$conn = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
// Get the variable needed for the query. URL should look like ex: something.com/thispage.php?Regno=1220
$reg_no = isset($_GET['Regno']) ? $_GET['Regno'] : '';
$sql = "SELECT * FROM ab WHERE Regno='" . $reg_no . "'";
$query = $conn->query($sql);
?>
<div>
<table >
<tr>
<th>Co1</th>
<th>Co2</th>
<th>Co3</th>
<th>Co4</th>
<th>Co5</th>
<th>Co6</th>
</tr>
<?php
// Place each result into an array.
$rows = array();
while($row = $query->fetch_array()){
$rows[] = $row;
}
// Loop through the array and structure the table.
foreach($rows as $row){
echo "<tr>";
echo "<td>" . $row['Co1'] . "</td>";
echo "<td>" . $row['Co2'] . "</td>";
echo "<td>" . $row['Co3'] . "</td>";
echo "<td>" . $row['Co4'] . "</td>";
echo "<td>" . $row['Co5'] . "</td>";
echo "<td>" . $row['Co6'] . "</td>";
echo "</tr>";
}
// Free the result set.
$query->close();
// Close the connection.
$conn->close();
?>
</table>
</div>
我希望这会有所帮助!