单击“提交”按钮，从数据库中选择数据
问题描述：
i have a table when i want to click a button it get data from database to table i try this code but i get error.
<div class="wrapper wrapper-content animated fadeInRight">
<div class="row">
<div class="col-lg-12">
<div class="ibox float-e-margins">
<div class="ibox-title">
<h5>Conference Table</h5>
<div class="ibox-tools">
<a class="collapse-link">
<i class="fa fa-chevron-up"></i>
</a>
<a class="dropdown-toggle" data-toggle="dropdown" href="table_data_tables.php#">
<i class="fa fa-wrench"></i>
</a>
<ul class="dropdown-menu dropdown-user">
<li><a href="table_data_tables.php#">Config option 1</a>
</li>
<li><a href="table_data_tables.php#">Config option 2</a>
</li>
</ul>
<a class="close-link">
<i class="fa fa-times"></i>
</a>
</div>
</div>
<div class="ibox-content">
<div class="form-group">
<div class="col-sm-4 col-sm-offset-5">
<button class="btn btn-white" type="submit">Cancel</button>
<button class="btn btn-primary" type="submit">Run Report</button>
</div>
</div>
<table class="table table-striped table-bordered table-hover dataTables-example" >
<thead>
<tr>
<th>No</th>
<th>Aim</th>
<th>Date</th>
<th>Funded</th>
<th>Male</th>
<th>Female</th>
<th>Disabled</th>
<th>Total</th>
<th>Comments</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<?php
$mysqli = new mysqli( 'localhost', 'user2', 'password', 'database' );
if (mysqli_connect_error()) {
echo mysqli_connect_error();
exit();
}
if (isset($_POST['submit'])) {
$query = 'SELECT * FROM conference';
$data = mysqli_query($mysqli, $query) ;
if (!$data) {
echo("Error description: " . mysqli_error($mysqli));
} else {
while ($row = mysqli_fetch_array($data)) {
echo "<tr>
<td>" . $row['NOTW'] . "</td>
<td>" . $row['Aim'] . "</td>
<td>" . $row['date'] . "</td>
<td>" . $row['Funded'] . "</td>
<td>" . $row['Male'] . "</td>
<td>" . $row['Female'] . "</td>
<td>" . $row['Disabled'] . "</td>
<td>" . $row['Total'] . "</td>
<td>" . $row['Comments'] . "</td>
<td> Edit Trush </td>
</tr>";
}
}
}
?>
</tbody>
<tfoot>
</tfoot>
</table>
</div>
</div>
</div>
the Error is
Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, null given in /home/cshrnaf/public_html/MIS_CSHRN/reporttest.php on line 265
265 line:
while($row = mysqli_fetch_array($data))
UPDATE
After Change code to:
<div class="ibox-content">
<table class="table table-striped table-bordered table-hover dataTables-example" >
<thead>
<tr>
<th>No</th>
<th>Aim</th>
<th>Date</th>
<th>Funded</th>
<th>Male</th>
<th>Female</th>
<th>Disabled</th>
<th>Total</th>
<th>Comments</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<?php
$mysqli = new mysqli( 'localhost', 'user2', 'password', 'database' );
if (mysqli_connect_error()) {
echo mysqli_connect_error();
exit();
}
/*
if(isset($_POST['submit']))
{
*/
$query = 'SELECT * FROM conference';
$data = mysqli_query($mysqli, $query);
while($row = mysqli_fetch_array($data))
{
echo " <tr>
<td>" . $row['NOTW'] . "</td>
<td>" . $row['Aim'] . "</td>
<td>" . $row['date'] . "</td>
<td>" . $row['Funded'] . "</td>
<td>" . $row['Male'] . "</td>
<td>" . $row['Female'] . "</td>
<td>" . $row['Disabled'] . "</td>
<td>" . $row['Total'] . "</td>
<td>" . $row['Comments'] . "</td>
<td> Edit Trush </td>
</tr>";
}
//}
?>
</tbody>
<tfoot>
</tfoot>
</table>
</div>
</div>
</div>
data will be loaded if the page will be loaded
答
If isset($_POST['submit']) Returns false the query is never executed and $data is null. But the while Loop will be executed. So Change your code to:
if (isset($_POST['submit'])) {
$query = 'SELECT * FROM conference';
$data = mysqli_query($mysqli, $query) ;
if (!$data) {
echo("Error description: " . mysqli_error($mysqli));
} else {
while ($row = mysqli_fetch_array($data)) {
echo "<tr>
<td>" . $row['NOTW'] . "</td>
<td>" . $row['Aim'] . "</td>
<td>" . $row['date'] . "</td>
<td>" . $row['Funded'] . "</td>
<td>" . $row['Male'] . "</td>
<td>" . $row['Female'] . "</td>
<td>" . $row['Disabled'] . "</td>
<td>" . $row['Total'] . "</td>
<td>" . $row['Comments'] . "</td>
<td> Edit Trush </td>
</tr>";
}
}
}
UPDATE
in $_POST the Name is used. not the type, so Change:
<button class="btn btn-primary" type="submit">Run Report</button>
to
<button class="btn btn-primary" type="submit" name="Report">Run Report</button>
and
if (isset($_POST['submit'])) {
to
if (isset($_POST['report'])) {
答
Use this its work Test link
<div class="ibox-content">
<table class="table table-striped table-bordered table-hover dataTables-example" >
<thead>
<tr>
<th>No</th>
<th>Aim</th>
<th>Date</th>
<th>Funded</th>
<th>Male</th>
<th>Female</th>
<th>Disabled</th>
<th>Total</th>
<th>Comments</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<?php
$mysqli = mysqli_connect( 'localhost', 'username', 'pass', 'mis_db');
if (mysqli_connect_error()) {
echo mysqli_connect_error();
exit();
}
/*
if(isset($_POST['submit']))
{
*/
$query = 'SELECT * FROM conference';
$data = mysqli_query($mysqli, $query);
while($row = mysqli_fetch_array($data))
{
echo " <tr>
<td>" . $row['NOTW'] . "</td>
<td>" . $row['Aim'] . "</td>
<td>" . $row['date'] . "</td>
<td>" . $row['Funded'] . "</td>
<td>" . $row['Male'] . "</td>
<td>" . $row['Female'] . "</td>
<td>" . $row['Disabled'] . "</td>
<td>" . $row['Total'] . "</td>
<td>" . $row['Comments'] . "</td>
<td> Edit Trush </td>
</tr>";
}
//}
?>
</tbody>
<tfoot>
</tfoot>
</table>
</div>
</div>
</div>
答
try this for connect database
$mysqli = mysqli_connect( 'localhost', 'username', 'pass', 'mis_db' );
may be thats why you got a error
答
Simply include while loop into if statement in order to be executed only when you submit the form:
if (isset($_POST['submit'])) {
$query = 'SELECT * FROM conference';
$data = mysqli_query($mysqli, $query);
while ($row = mysqli_fetch_array($data)) {
echo " <tr>
<td>" . $row['NOTW'] . "</td>
<td>" . $row['Aim'] . "</td>
<td>" . $row['date'] . "</td>
<td>" . $row['Funded'] . "</td>
<td>" . $row['Male'] . "</td>
<td>" . $row['Female'] . "</td>
<td>" . $row['Disabled'] . "</td>
<td>" . $row['Total'] . "</td>
<td>" . $row['Comments'] . "</td>
<td> Edit Trush </td>
</tr>";
}
}
答
You are passing null value to the mysqli_fetch_array() function.because the value of $data variable can not be identified at the function.make
$data="" ;
at the beginning of the php code.
try this code
<div class="ibox-content">
<table class="table table-striped table-bordered table-hover dataTables-example">
<thead>
<tr>
<th>No</th>
<th>Aim</th>
<th>Date</th>
<th>Funded</th>
<th>Male</th>
<th>Female</th>
<th>Disabled</th>
<th>Total</th>
<th>Comments</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<?php
$data="";
$mysqli = new mysqli('localhost', 'username', 'pass', 'mis_db');
if (mysqli_connect_error()) {
die('Connect Error (' . mysqli_connect_errno() . ') '
. mysqli_connect_error());
}
if (isset($_POST['submit'])) {
$query = 'SELECT * FROM conference';
$data = mysqli_query($mysqli, $query);
}
while ($row = mysqli_fetch_array($data)) {
echo " <tr>
<td>" . $row['NOTW'] . "</td>
<td>" . $row['Aim'] . "</td>
<td>" . $row['date'] . "</td>
<td>" . $row['Funded'] . "</td>
<td>" . $row['Male'] . "</td>
<td>" . $row['Female'] . "</td>
<td>" . $row['Disabled'] . "</td>
<td>" . $row['Total'] . "</td>
<td>" . $row['Comments'] . "</td>
<td> Edit Trush </td>
</tr>";
}
?>
</tbody>
<tfoot>
</tfoot>
</table>
</div>
答
After you showed us the "submit" button, the below code should work on 'Run Report' button is pressed:
This is the complete solution to your question:
<div class="wrapper wrapper-content animated fadeInRight">
<div class="row">
<div class="col-lg-12">
<div class="ibox float-e-margins">
<div class="ibox-title">
<h5>Conference Table</h5>
<div class="ibox-tools">
<a class="collapse-link">
<i class="fa fa-chevron-up"></i>
</a>
<a class="dropdown-toggle" data-toggle="dropdown" href="table_data_tables.php#">
<i class="fa fa-wrench"></i>
</a>
<ul class="dropdown-menu dropdown-user">
<li><a href="table_data_tables.php#">Config option 1</a>
</li>
<li><a href="table_data_tables.php#">Config option 2</a>
</li>
</ul>
<a class="close-link">
<i class="fa fa-times"></i>
</a>
</div>
</div>
<div class="ibox-content">
<div class="form-group">
<div class="col-sm-4 col-sm-offset-5">
<button class="btn btn-white" type="submit">Cancel</button>
<form action="" method="post">
<button class="btn btn-primary" type="submit">Run Report</button><input type="hidden" name="submit" value="true"/>
</form>
</div>
</div>
<table class="table table-striped table-bordered table-hover dataTables-example" >
<thead>
<tr>
<th>No</th>
<th>Aim</th>
<th>Date</th>
<th>Funded</th>
<th>Male</th>
<th>Female</th>
<th>Disabled</th>
<th>Total</th>
<th>Comments</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<?php
$mysqli = new mysqli('localhost', 'cshrnaf_user2', '=cXlIBsdMkdr', 'cshrnaf_mis_db');
if (isset($_POST['submit'])) {
if (mysqli_connect_error()) {
echo mysqli_connect_error();
exit();
}
$query = 'SELECT * FROM conference';
$data = mysqli_query($mysqli, $query);
if (!$data) {
echo("Error description: " . mysqli_error($mysqli));
} else {
while ($row = mysqli_fetch_array($data)) {
echo "<tr>
<td>" . $row['NOTW'] . "</td>
<td>" . $row['Aim'] . "</td>
<td>" . $row['date'] . "</td>
<td>" . $row['Funded'] . "</td>
<td>" . $row['Male'] . "</td>
<td>" . $row['Female'] . "</td>
<td>" . $row['Disabled'] . "</td>
<td>" . $row['Total'] . "</td>
<td>" . $row['Comments'] . "</td>
<td> Edit Trush </td>
</tr>";
}
}
}
?>
</tbody>
<tfoot>
</tfoot>
</table>
</div>
</div>
</div>
</div>
</div>
答
you called ($row = mysqli_fetch_array($data))
using ($row = mysqli_fetch_assoc($data))
this code i used to test for tou with dreamweaver ADOBE
its work fine
<?php require_once('Connections/test.php'); ?>
<?php
mysql_select_db($database_test, $test);
$query_table = "SELECT * FROM `table`";
$table = mysql_query($query_table, $test) or die(mysql_error());
$row_table = mysql_fetch_assoc($table);
$totalRows_table = mysql_num_rows($table);
?>
<html>
<head>
<title>test</title>
</head>
<body>
<table width="200" border="1">
<tbody>
<tr>
<?php do { ?>
<th scope="col"><?php echo $row_table['col1']; ?></th>
<th scope="col"><?php echo $row_table['col2']; ?></th>
<th scope="col"><?php echo $row_table['col3']; ?></th>
<th scope="col"><?php echo $row_table['col4']; ?></th>
<th scope="col"><?php echo $row_table['col5']; ?></th>
<th scope="col"><?php echo $row_table['col6']; ?></th>
<th scope="col"><?php echo $row_table['col7']; ?></th>
<th scope="col"><?php echo $row_table['col8']; ?></th>
<th scope="col"><?php echo $row_table['col9']; ?></th>
<th scope="col"><?php echo $row_table['col10']; ?></th></tr><br>
<?php } while ($row_table = mysql_fetch_assoc($table)); ?>
</tr>
</tbody>
</table>
</body>
</html>
<?php
mysql_free_result($table);
?>
//OUTPUT
<html>
<head>
<title>test</title>
</head>
<body>
<table width="200" border="1">
<tbody>
<tr>
<th scope="col">insert1col1</th>
<th scope="col">insert1col2</th>
<th scope="col">insert1col3</th>
<th scope="col">insert1col4</th>
<th scope="col">insert1col5</th>
<th scope="col">insert1col6</th>
<th scope="col">insert1col7</th>
<th scope="col">insert1col8</th>
<th scope="col">insert1col9</th>
<th scope="col">insert1col10</th></tr><br>
<th scope="col">insert2col1</th>
<th scope="col">insert2col2</th>
<th scope="col">insert2col3</th>
<th scope="col">insert2col4</th>
<th scope="col">insert2col5</th>
<th scope="col">insert2col6</th>
<th scope="col">insert2col7</th>
<th scope="col">insert2col8</th>
<th scope="col">insert2col9</th>
<th scope="col">insert2col10</th></tr><br>
</tr>
</tbody>
</table>
</body>
</html>