我在mysql上有这个代码，我想调试并将其转换为更新的mysqli。除了这个特殊的mysql函数 mysql_result（）; 之外，我几乎所有人都成功了。我尝试编辑它但它没有工作，所以我只是按原样离开它，但它仍然给我错误。非常感谢您的一点帮助。 这是整个PHP代码。
<?php
session_start();
if($_SESSION['isvalid'] != "true"){
header("location:index.php");
}
require('functions.php');
require('htmls.php');
headhtml();
categoryadd();
?>
<body>
<div id="container">
<div id="bgwrap">
<div id="primary_left">
<div id="menu"> <!-- navigation menu -->
<ul>
<li><a href="notifications.php"><img src="icons/73.png"
alt /><span>Notifications</span></a></li>
<li><a href="bids.php" class="dashboard"><img
src="icons/2.png" alt /><span class="current">Bids</span></a></li>
<li class='showme current'><a href="#"><img
src="icons/36.png" alt /><span>Products</span></a>
<ul class='showoff'>
<li><a href="add_prodven.php">New Product</a>
</li>
<li><a href="addcategory.php">New Product
Category</a></li>
</ul>
</li>
<li class='showme'><a href="#"><img
src="./assets/icons/small_icons_3/settings.png" alt /><span>Account</span>
</a>
<ul class='showoff'>
<li><a href="logout.php">Logout</a></li>
</ul>
</li>
</ul>
</div> <!-- navigation menu end -->
</div>
<div id="primary_right">
<div class="inner">
<h1>Welcome Administrator</h1>
<div class="two_third column">
<h5>Add New Product Category</h5>
<div id="bodycon">
<form method="post" name="prodform" id="prodform"
action="" enctype='multipart/form-data'>
<div id="textcon">
Category Name:
<input name="categoryname" type="text"
id="categoryname" class="namewidth" />
<input type="file" name="catimage"
id="catimage" class="namewidth" accept="images/*" />
<input name="cmdadd" type="submit"
id="cmdadd" value="Add New" class="namewidth" />
<input name="cmdcancel" type="submit"
id="cmdcancel" value="Cancel" class="namewidth"/>
</div>
<div id="inputcon1">
<table width="554" border="0">
<tr>
<td width="22"> </td>
<td width="129" bgcolor="#CCCCCC">
<strong>Category number</strong></td>
<td width="189" bgcolor="#CCCCCC">
<strong>Category Name</strong></td>
<td width="100" bgcolor="#CCCCCC">
<strong>Category Image</strong></td>
<td width="44" bgcolor="#CCCCCC">
<strong>Edit</strong></td>
<td width="48" bgcolor="#CCCCCC">
<strong>Delete</strong></td>
</tr>
<?php
$result = $mysqli->query("SELECT * FROM
categories ORDER BY id");
if (!$result)
{
die("Query to show fields from table
failed");
}
$numberOfRows = mysqli_num_rows($result);
if ($numberOfRows == 0)
{
echo 'Sorry No Record Found!';
}
else if ($numberOfRows > 0) {
$i=1;
while ($i<$numberOfRows) {
if(($i%2)==0)
{
$bgcolor ='#FFFFFF';
}
else
{
$bgcolor ='@C0C0C0';
}
$this_CategoryID =
mysql_result($result,$i,"id");//this is the line
$this_CategoryName =
mysql_result($result,$i,"name");//this is another line
$image =
mysql_result($result,$i,"cat_img");//this is another line
?>
</tr>
<tr>
<td> </td>
<td><?php echo $i; ?></td>
<td><?php echo $this_CategoryName; ?></td>
<td><img src="images/category/<?php echo $image;
?>" width="75" height="75" /></td>
<td><a href="edit.category.php?CategoryID= <?php
echo $this_CategoryID; ?>"><img src="backgrounds/contact_grey_edit.png"
alt="" width="20" height="20" /></a></td>
<td><a href="delete_category.php?CategoryID=<?php echo
$this_CategoryID; ?>"><img src="backgrounds/contact_grey_remove.png"
alt="delete record" onClick="return confirm('Are you sure you want to
delete
<?php echo $this_CategoryID; ?>');" width="20" height="20" /></a></td>
</tr>
<?php
$i++;
}$i;
}
?>
</table>
</div>
</form>
</div>
</div>
<div class="one_third last column">
<h5></h5>
</div>
<hr />
<HR>
<HR/>
<div class="clearboth"></div>
</div><!-- three_fourth last -->
</div>
<div class="clearboth" style="padding-bottom:20px;"></div>
</div> <!-- inner -->
</div> <!-- primary_right -->
</div> <!-- bgwrap -->
</div> <!-- container -->
</body>
</html>
<script type='text/javascript'>
jQuery(document).ready( function() {
jQuery('.notif').hide();
jQuery('#number').click( function() {
jQuery('.notif').toggle('slow');
});
jQuery(".notif").click( function() {
var id = $(this).attr("id");
jQuery.ajax({
type: "POST",
data: ({id: id}),
url: "bidupdate.php",
success: function(response) {
jQuery(".id" + id).hide();
jQuery("#num_result").fadeIn().html(response);
}
});
})
jQuery(document).ready( function() {
jQuery('.showoff').hide();
jQuery('.showme').click( function() {
jQuery('.showoff').hide();
jQuery(this).find('ul').toggle('slow');
});
});
});
</script>