PHP - Delete Script Using Checkboxes

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http://www.phpfreaks.com/forums/index.php?topic=343682.0

Hey everyone i having some trouble updating records in my databse using checkbox from a form.

I can update the records, but i can't figure out how to remove records at the same time.

I've posted the code that i'm using to update below

foreach($_POST['tag'] as $k=>$l){
$tag = mysql_real_escape_string($_POST['tag'][$k]);

$check_tags = mysql_query("SELECT * FROM file_cats WHERE category='$tag'") or die(mysql_error());
$num_tags = mysql_num_rows($check_tags);

if($num_tags==0){
$add_tag = mysql_query("INSERT into file_cats (fileID, category) VALUES('$fileID', '$tag')") or die(mysql_error());
}
}


This code inserts new records based on what the user checked. If it exist it won't add a new row, if it doesn't exist then it will add a new row. but like i said how can remove a row if the box is no longer checked?

I've tried using

foreach(empty($_POST['tag'] as $k => $l){
       $tag = empty($_POST['tag']['$k'];
}


But that didn't work basically nothing was deleted.

Has anyone done something like this before? if so i would appreciate any help you could give

Hi, I want to build into my html table that populates my database table to have a column for checkboxes with a delete button that takes the user to another page to confirm the deletion by outputting a message: Are you sure you want to delete ____, followed by a for loop to see how many checked records to get its ID in order to get its appropriate name. So I have a submit button with name attribute of "delete0" and the values of the input type of checkbox is $row['ID'], for some reason, I get the notice: "Notice: Undefined index: modifyArray in C:\display.php" and modifyArray is the name I give to the checkbox attribute (please see this in my display.php below)

Here is my display.php
Code: [Select]
<table border="border">
        <!--NB: checkbox form for multiple delete/update/insert-->
       <form method="post" action="">
           <input type='submit' value='DELETE' name='delete0' />
           
<?php
    session_start();
    require 'bellSessionDisconnect.inc';
    require 'bellConnect.inc.php';

   $result=mysql_query("SELECT ID, Image, Name, Manufacturer, Price, Description, SimSupport FROM bellProducts");
    //phpinfo(); 

    //NB: print table headings
    if(mysql_num_rows($result))//if there is at least one entry in bellProducts, make a table
    {
        //$counter+=1;
        print "<table border='border'>";
        print "<tr>
        <th>ID</th>
        <th>Select entries to modifiy</th> 
        <th>Image</th>
        <th>Name</th>
        <th>Manufacturer</th>
        <th>Price</th>
        <th>Description</th>
        <th>SimSupport</th>
        <th colspan='2' align='center'>Modify</th>
           </tr>";

        //NB: now output each row of records
        while($row=mysql_fetch_assoc($result))
        {
            //extract($row);
            
                print
                "<tr align='center'>
                    <td>$row[ID]</td>
                    <td><input type='checkbox' name='modifyArray[]' value='$row[ID]' /></td>
                    <td>";
                    if(!empty($row['Image']))
                    {
                        $curImage=$row['Image'];
                    }
                    else if(empty($row['Image']))
                    {
                        $curImage='fileUploadIcon.jpg';
                        //$title="please upload item image";
                    }
                       print "<img src=$curImage width='70px' height='90px' />
                    </td>
                    <td> $row[Name] </td>
                    <td> $row[Manufacturer] </td>
                    <td> $$row[Price]</td>
                    <td align='left'>$row[Description]</td>
                    <td>$row[SimSupport]</td>
                    <td><a href='bellUploadForm.php?ID=$row[ID]'>UPLOAD IMAGE</a></td>
                    <td><a href='bellUpdateForm.php?ID=$row[ID]'>UPDATE</a></td>
                  </tr>";
            //}//END INNER IF
        }//END WHILE
             
  }//END BIG IF

?>

<?php           
    if(array_key_exists('delete0', $_POST))
    {
        $modifyArray=$_POST["modifyArray"];
        if(!empty($modifyArray))
        {
            header("Location: http://localhost/bellDeleteForm.php");
            exit();
        }
    }

?>
        </form>
           
</table>
   


I will worry about redirecting to bellDeleteForm.php to confirm the records the user wants to delete after I get this going, please help!!! thanks

Hello PHP Freaks,   I think this is just if else statement problem but im kinda lose to it. The whole code is succesful in deleting the data from database the problem is i wanted to put a script that remind the user if he/she really sure to delete the data. By the way this is the script.

<?php

	// connect to the database
	 	include 'Connect.php';
	
	// confirm that the 'student_id' variable has been set
	 	if (isset($_GET['student_id']) && is_numeric($_GET['student_id']))
		{
	// get the 'student_id' variable from the URL
	 	$student_id = $_GET['student_id'];
		
	// delete record from database
		if ($stmt = $mysql->prepare("DELETE FROM student_information WHERE student_id = ? LIMIT 1")) 
		{
			$stmt->bind_param("i",$student_id);	
			$stmt->execute();
			$stmt->close();
		}
		else
		{
			echo "ERROR: could not prepare SQL statement.";
		}
		$mysql->close();
		
	// redirect user after delete is successful
		header("Location: Admin_Home.php");
	}
	else
	// if the 'student_id' variable isn't set, redirect the user
		{
			header("Location: Admin_Home.php");
		}
?>

Please help me modify these codes and where to put the missing line/s of codes.

Maybe some of the great coders here can help this noob out.
So here is what I have so far:

Code: [Select]
//set age criteria for deletion
$age = 60;

//get current date
$datenow  = date("Y-m-d");

//set the range we want to delete
$delete_range = $datenow - $age;

//get old user_id from users table
$oldusers_users = mysql_query ("SELECT user_id FROM users WHERE lastvisit < $delete_range ");

//get user_id from images table that correspond to users table
$oldusers_images = mysql_query ("SELECT user_id FROM images WHERE $oldusers_users=user_id.images ");

//find folders that correspond to the usernames and delete
$oldusers_files = mysql_query ("SELECT username FROM users WHERE lastvisit < $delete_range ");
//print out username
//$result = mysql_($oldusers_files);
$foldername = mysql_result($oldusers_files, 0);

$sigspath = "sigs/";
unlink($sigspath . $foldername . ".gif/index.php");
rmdir($sigspath . $foldername . ".gif");
//now delete user_id's from database
mysql_query("DELETE * FROM users WHERE user_id=$oldusers_users");
mysql_query("DELETE * FROM images WHERE user_id=$oldusers_images");
unset($oldusers_users, $oldusers_images, $oldusers_files, $foldername, $sigspath );
mysql_close($link);
Right now it is only returning the first entry, not the entire list that meets the criteria.  It does delete that one file though but does not remover the rows from the database.

I am sure the database stuff is jacked up I am really new to that part.  What am I doing wrong here or is there a better way to do this perhaps