I am running a PHP script, and keep getting errors like:
*Notice: Undefined variable: result2 in D:\xampp-win32\htdocs\sites\bookstore\result_page.php on line 200
*warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, null given in D:\xampp-win32\htdocs\sites\bookstore\result_page.php on line 200
Line 200 looks like this:<?php while($row = mysqli_fetch_array($result2))
What do they mean?
Jump to Post@dyea.marcello\
Add $con to here:
From this:
<?php while($row = mysqli_fetch_array($result2)){ $id2 = $row["ID"];} ?>to this:
<?php while($row = mysqli_fetch_array($con,$result2)){ $id2 = $row["ID"];} ?>What error did you get now?
Jump to Postif both $author and $title are NULL, $result2 will be undefined.
Use isset() before using it.
put '@' before mysqli_fetch_array
after your code look like this
<?php while($row = @mysqli_fetch_array($result2))
Just using following code you solve this problem.If you use '@' this is used to hide an error its not a solution of this error.Just using mysl_num_rows () function you solved this problem eg.
<?php
$result2 =mysql_query($qry);
$numrow = mysql_num_rows($result2);
if($numrow >0)
{
while($row = mysqli_fetch_array($result2))
{
//Your code here.......
}
}
else
{
echo "Result Not Found !";
}
?>
this is my whole code
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<?php
require_once('auth.php');
$con=mysqli_connect("localhost","mag_install","mag123","mag_rocket");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$author = $_POST['Author'];
$title = $_POST['Title'];
$category = $_POST['Category'];
$result = mysqli_query($con,"SELECT * FROM category") or die("Error: ".mysqli_error($con));
if ($category != 'None') {
if ($title != NULL) {
$result2 = mysqli_query($con,"SELECT * FROM issue2 WHERE TITLE LIKE '%$title%' AND CATEGORY = '$category'") or die("Error: ".mysqli_error($con));
}
else if ($author != NULL) {
$result2 = mysqli_query($con,"SELECT * FROM issue2 WHERE NAME LIKE '%$author%' AND CATEGORY = '$category'") or die("Error: ".mysqli_error($con));
}
}
else {
if ($author != NULL) {
$result2 = mysqli_query($con,"SELECT * FROM issue2 WHERE NAME LIKE '%$author%'") or die("Error: ".mysqli_error($con));
}
else if ($title != NULL) {
$result2 = mysqli_query($con,"SELECT * FROM issue2 WHERE TITLE LIKE '%$title%'") or die("Error: ".mysqli_error($con));
}
}
$result4 = mysqli_query($con,"SELECT * FROM category");
?>
<html>
<head>
<title>Untitled</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link href="style.css" rel="stylesheet" type="text/css">
</head>
<body>
<table cellpadding="0" cellspacing="0" border="0" style="width:721px" align="center">
<tr>
<td>
<table cellpadding="0" cellspacing="0" border="0" style="height:30px; background :white; class="header">
</table>
</td>
</tr>
<tr>
<td>
<table cellpadding="0" cellspacing="0" border="0" style="height:565px; background:#ffffff ">
<tr>
<td><img alt="" src="images/spacer.gif" width="9" height="5"></td>
<td class="col_left">
<table cellpadding="0" cellspacing="0" border="0" class="box_width_left">
<tr>
<td>
<table cellpadding="0" cellspacing="0" border="0" class="box_heading_table">
<tr>
<td><img src="images/box_heading_tl.gif" alt="" border="0"></td>
<td style="width:100%" class="box_heading_tall_t"></td>
<td><img src="images/box_heading_tr.gif" alt="" border="0"></td>
</tr>
<tr>
<td class="box_heading_tall_l"><img src="images/box_heading_l.gif" alt="" border="0"></td>
<td style="width:100%" class="box_heading_td">Category</td>
<td class="box_heading_tall_r"><img src="images/box_heading_r.gif" alt="" border="0"></td>
</tr>
<tr>
<td><img src="images/box_heading_bl.gif" alt="" border="0"></td>
<td style="width:100%" class="box_heading_tall_b"></td>
<td><img src="images/box_heading_br.gif" alt="" border="0"></td>
</tr>
</table>
<table cellpadding="0" cellspacing="0" border="0" class="box_body_table">
<tr>
<td style="width:100%" class="box_body">
<br style="line-height:11px">
<ul>
<li class="bg_list">
<?php while($row = mysqli_fetch_array($result))
{
$name = $row["Name"];
$id2 = $row["Id"];
?>
<a href="/sites/bookstore/features_products.php?category=<?php echo $id2; ?>">
<?php echo $name;
echo "<br>"; } ?></a>
<a href="/sites/bookstore/main_page.php">See all</a>
</li>
</ul>
<br style="line-height:9px">
</td>
</tr>
</table>
<img alt="" src="images/line1.gif"><br><br style="line-height:11px">
<br style="line-height:9px">
<table cellpadding="0" cellspacing="0" border="0" class="box_heading_table_2">
<tr>
<td><img src="images/box_heading_tl_2.gif" alt="" border="0"></td>
<td style="width:100%" class="box_heading_tall_t_2"></td>
<td><img src="images/box_heading_tr_2.gif" alt="" border="0"></td>
</tr>
<tr>
<td class="box_heading_tall_l_2"><img src="images/box_heading_l_2.gif" alt="" border="0"></td>
<td style="width:100%" class="box_heading_td_2">Advance Search</td>
<td class="box_heading_tall_r_2"><img src="images/box_heading_r_2.gif" alt="" border="0"></td>
</tr>
<tr>
<td><img src="images/box_heading_bl_2.gif" alt="" border="0"></td>
<td style="width:100%" class="box_heading_tall_b_2"></td>
<td><img src="images/box_heading_br_2.gif" alt="" border="0"></td>
</tr>
</table>
<table cellpadding="0" cellspacing="15" border="0" class="box_body_table_2">
<tr>
<td>
<form action="result_page.php" method="POST">
<b>By Author :</b> <br> <input type="text" name="Author" size="20"> <br><br>
<b>By Title :</b> <br> <input type="text" name="Title" size="20"> <br><br>
<b>Which Category?</b><br><br>
<select name="Category">
<option value="None">None</option>
<?php while($row = mysqli_fetch_array($result4)) {
$name = $row["Name"];
?>
<option value="<?php echo $name ?>"><?php echo $name ?></option>
<?php } ?>
</select>
<br><br>
<input type="submit" value="Search">
</form>
</td>
</tr>
</table>
<img alt="" src="images/line2.gif"><br>
</td>
</tr>
</table>
</td>
<td><img alt="" src="images/spacer.gif" width="9" height="1"></td>
<td><img alt="" src="images/spacer.gif" width="9" height="1"></td>
<td class="col_center">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td>
<table cellpadding="0" cellspacing="0" border="0" class="cont_heading_table">
<tr>
<td><img src="images/cont_heading_tl.gif" alt="" border="0"></td>
<td style="width:100%" class="cont_heading_t"></td>
<td><img src="images/cont_heading_tr.gif" alt="" border="0"></td>
</tr>
<tr>
<td class="cont_heading_l"><img alt="" src="images/cont_heading_l.gif"></td>
<td style="width:100%" class="cont_heading_td cont_heading_td">Featured Products</td>
<td class="cont_heading_r"><img alt="" src="images/cont_heading_r.gif"></td>
</tr>
<tr>
<td><img src="images/cont_heading_bl.gif" alt="" border="0"></td>
<td style="width:100%" class="cont_heading_b"></td>
<td><img src="images/cont_heading_br.gif" alt="" border="0"></td>
</tr>
</table>
<br style="line-height:20px">
<table>
<?php while($row = mysqli_fetch_array($result2))
{
$id2 = $row["ID"];
?>
<div id= 'item'>
<P><class="vam"><a href="/sites/bookstore/product_info.php?ID=<?php echo $id2; ?>"><?php echo $row["TITLE"]; ?></a></p>
<p>By <?php echo $row["NAME"] ?></p>
<p><class="vam"><a href="/sites/bookstore/product_info.php?ID=<?php echo $id2; ?>"><img border = "0" alt = "" src="/sites/bookstore/magrocket/backend/source//media/images/<?php echo $row["COVER"]; ?>"></a></P>
<p>RM<?php echo $row["PRICING"] ?></p>
<p>Download File :<br><class="vam"><a href="/sites/bookstore/magrocket/backend/source//media/images<?php echo $row["DOWNLOAD"] ?>">Click Here</a></p>
<?php
$data = range(" "," ");
for($count = 0; $count < count($data);)
{
echo "<tr>\n";
for($i = 0; $count < count($data) && $i < 3; $count++, $i++) {
echo "\t<td>$data[$count]</td>\n";
}
for(; $i < 1; $i++) {
echo "\t<td>-</td>\n";
}
echo "</tr>\n";
}
?>
<?php } ?>
</table>
</td>
</tr>
</table>
</td>
<td><img alt="" src="images/spacer.gif" width="9" height="1"></td>
</tr>
</table>
</td>
</tr>
</table>
</body>
</html>
<?php
mysqli_close($con);
?>
*error at line 200.
@dyea.marcello\
Add $con to here:
From this:
<?php while($row = mysqli_fetch_array($result2)){
$id2 = $row["ID"];}
?>
to this:
<?php while($row = mysqli_fetch_array($con,$result2)){
$id2 = $row["ID"];}
?>
What error did you get now?
error
*Notice: Undefined variable: result2 in D:\xampp-win32\htdocs\sites\bookstore\result_page.php on line 200
*warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, object given in D:\xampp-win32\htdocs\sites\bookstore\result_page.php on line 200
warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, object given in D:\xampp-win32\htdocs\sites\bookstore\result_page.php on line 200
@dyea.marcello
I want to know why you have 4 different $result2 running different query?
Why did you write it like this:
$result2 = mysqli_query($con,"SELECT * FROM issue2 WHERE TITLE LIKE '%$title%' AND CATEGORY = '$category'") or die("Error: ".mysqli_error($con));
}
else if ($author != NULL) {
$result2 = mysqli_query($con,"SELECT * FROM issue2 WHERE NAME LIKE '%$author%' AND CATEGORY = '$category'") or die("Error: ".mysqli_error($con));
}
}
else {
if ($author != NULL) {
$result2 = mysqli_query($con,"SELECT * FROM issue2 WHERE NAME LIKE '%$author%'") or die("Error: ".mysqli_error($con));
}
else if ($title != NULL) {
$result2 = mysqli_query($con,"SELECT * FROM issue2 WHERE TITLE LIKE '%$title%'") or die("Error: ".mysqli_error($con));
}
}
On your table (issue2) does it have $id2 = $row["ID"]; or $id2 = $row["Id"];?
Also did you write this script?
if both $author and $title are NULL, $result2 will be undefined.
Use isset() before using it.
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