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Wenn ich auf die Suchschaltfläche klicke, ohne einen Text in das Textfeld einzugeben, erscheint die Warnung: mysqli_fetch_assoc() erwartet Parameter 1 als mysqli_result, String als gegeben , wie ich dieses Problem aussortieren kann, hier ist mein Code wird jede HilfeWarnung: mysqli_fetch_assoc() erwartet, dass Parameter 1 mysqli_result ist, String gegeben
<?php
$title ="Manage Page";
include "includes/home_page_header.php";
?>
<?php
$error_array = array();
$count =1;
$firstName = $lastName = $email = $status =$res_users = $checkbox ="";
if(isset($_POST['Search']))
{
$firstName = $_POST['firstName'];
$lastName = $_POST['lastName'];
$email = $_POST['email'];
$status = $_POST['status'];
if($firstName !="")
{
$sql_users ="SELECT * FROM `users` WHERE `firstName` LIKE '$firstName'";
}
else if($lastName !="")
{
$sql_users ="SELECT * FROM `users` WHERE `lastName` LIKE '$lastName'";
}
else if($email !="")
{
$sql_users ="SELECT * FROM `users` WHERE `email` LIKE '$email'";
}
else if($firstName !="" && $lastName !="")
{
$sql_users ="SELECT * FROM `users` WHERE `firstName` LIKE '$firstName' AND `lastName` LIKE '$lastName'";
}
else
{
$sql_users = "SELECT * FROM `users`";
}
if(isset($_GET['user_id']))
{
$user_id = $_GET['user_id'];
$sql_users = "DELETE from `users` WHERE user_id=".$user_id;
if ($link->query($sql_users) == TRUE)
{
$error ="Record deleted successfully";
array_push($error_array,$error);
}
if ($link->query($sql_users) == FALSE)
{
$error = "Your Abort Delete operation";
array_push($error_array,$error);
}
}
if($status == "Active")
{
$sql_users= "SELECT * FROM `users` WHERE `status` LIKE 'Active'";
$res_users = mysqli_query($link,$sql_users);
if($res_users && mysqli_num_rows($res_users) > 0)
{
while($log_row_users = mysqli_fetch_assoc($res_users))
{
$status = $log_row_users["status"];
}
}
}
if($status == "Inactive")
{
$sql_users= "SELECT * FROM `users` WHERE `status` LIKE 'Inactive'";
$res_users = mysqli_query($link,$sql_users);
if($res_users && mysqli_num_rows($res_users) > 0)
{
while($log_row_users = mysqli_fetch_assoc($res_users))
{
$status = $log_row_users["status"];
}
}
}
$res_users = mysqli_query($link ,$sql_users);
}
if(isset($_POST['delete_all']))
{
}
?>
<script>
$(document).ready(function()
{
$(".delete_button").on('click',function()
{
var result =confirm("Are you sure you want to delete ?");
if(result)
{
return true;
}
else
{
return false;
}
});
});
//function wantTodelete(user_id)
//{
// return confirm("Are you sure you want to delete ?");
//}
$(document).ready(function()
{
$("#checkAll").change(function() {
$("input:checkbox").prop('checked', $(this).prop("checked"));
});
});
</script>
<table border="1px" class="manage_table">
<form name="listingForm" action="" method="post">
<tr>
<?php
if($error_array !=0)
{
foreach($error_array as $value)
{
echo "<tr style='color:green;'><td></td><td> ". $value. "</td></tr>";
}
}
?>
</tr>
<tr>
<td></td>
<td><input type="text" name="firstName"></td>
<td><input type="text" name="lastName"></td>
<td><input type="text" name="email"></td>
<td>
<select name="status">
<option>Select Status </option>
<option value="Active" <?php echo $status;?>>Active </option>
<option value="Inactive" <?php echo $status;?>>Inactive </option>
</select>
</td>
<td><input style="width:135px" type="submit" name="Search" value="Search"></td>
<td><input type="submit" id="delete_all" name="delete_all" value="Delete All" onclick="return deleteAll();" /></td>
</tr>
<tr>
<th>Sr.No</th>
<th>First Name</th>
<th>Last Name</th>
<th>Email</th>
<th>Status</th>
<th>Action</th>
<th><input type="checkbox" id="checkAll" name="check_all[]"/></th>
</tr>
<?php
if($log_row_users = mysqli_fetch_assoc($res_users))
{
$user_id = $log_row_users['user_id'];
$firstName = $log_row_users['firstName'];
$lastName = $log_row_users['lastName'];
$email = $log_row_users['email'];
$status = $log_row_users['status'];
?>
<tr>
<td><?php echo $count++ ;?></td>
<td><?php echo $firstName;?></td>
<td><?php echo $lastName ;?></td>
<td><?php echo $email ;?></td>
<td>
<?php
if($status == "Active")
{
echo "<b style='color:#3CF'>".$status."</b>";
}
if($status == "Inactive")
{
echo "<b style='color:#F00'>".$status."</b>";
};
?>
</td>
<td>
<a style="margin-left:25px" href="http://localhost/sample/home_page_edit.php?user_id=<?php echo $user_id;?>" onclick="redirectMe();" name="redirect" id="redirect"><img src="images/pencil.png" /></a>
<a style="margin-left:35px" href="http://localhost/sample/home_page_manage.php?user_id=<?php echo $user_id;?>" name="delete_button" class="delete_button" ><img src="images/delete.png" /></a>
</td>
<th>
<input name="checkbox[]" type="checkbox" id="checkbox[]" class="checkbox">
</th>
</tr>
</form>
<?php
}
?>
</table>
<?php
include "includes/home_page_footer.php";
?>
sollte '$ result = mysqli_query ($ sql) sein helfen; while ($ row = mysqli_fetch_array ($ result)): [...] endwhile; ', aber vielleicht gibt Ihre Abfrage ein leeres Ergebnis zurück, so dass es zu Fehlern kommt? Überprüfen Sie vor dem Abrufen, ob die Ergebnisse nicht gleich null sind. Beachten Sie, dass Sie so viele Injektionspunkte haben, wie Sie SQLi-Injektionen verhindern können. Für Geschwindigkeitsabfragen können Sie Folgendes tun: 'foreach ($ db-> query ($ sql) als $ row): [...] endforeach;' – KDOT