I want to enroll the student and insert the student id into Mysql database after I check and submit the checkbox value, but I already tried so many ways but still cannot...
This is the php code
<?php
if (isset($_POST['submitxd'])) {
foreach ($_POST['enrol'] as $items) {
$insert = $link->query("INSERT INTO student_course(studentID) values ('$items')");}
}
?>
This is the html code
$result = $link->query("SELECT * FROM student WHERE programmeName = '$programme' AND intake = '$intake'");
while ($row = mysqli_fetch_array($result)) {
echo "<tr>
<td>".$row['studentID']."</td>
<td>".$row['studentName']."</td>
<td>".$row['studentGender']."</td>
<td>".$row['studentContact']."</td>
<td>
<input type='checkbox' name='enrol[]' value='".$row['studentID']."'>
</td>
</tr>";
}
check whether your array contains values or not:
echo "<pre>";
print_r($_POST['enrol']);
echo "</pre>";
if not, you should write html code properly i.e. check form tag and its action path carefully and before submitting the form, remember to check out the checkbox
Related
so i tried to get data from my database to checkbox and this is what i have tried :
<?php
$query = "SELECT * FROM siswa WHERE id_tingkatan='$idtingkatan'";
$result = $koneksi->query($query);
while($row=$result->fetch_assoc()){
?>
<input type="checkbox" name="murid[]" value="<?php echo $row['id_siswa']; ? >"><?php echo $row["nama_siswa"]; ?><br><br>
<?php } ?>
and save the value of checked checkbox into database, this is what i have tried :
if(isset($_POST["submit"]))
{
if(!empty ($_POST['murid']))
{
$i= 0;
foreach($_POST as $murid){
$kelas = $_POST['kelas'];
$murid = $_POST['murid'][$i];
$query = "INSERT INTO murid (id_kelas, id_siswa) VALUES ('$kelas', '$murid')";
$q = mysqli_query($koneksi, $query) or die (mysqli_error($koneksi));
$i++;
}
}
else
{
echo "<script type= 'text/javascript'>alert('Pilih minimal 1 siswa');</script>";
header('Location: ./kelas.php');
}
}
when i submit it does input to database but theres one extra row with id_siswa value as 0
The code inserts one record for each value in $_POST. However, $_POST contains all parameters sent (including submit), not just the checkbox array to be inserted. Iterate over the checkbox array $_POST['murid'] instead.
Change
foreach($_POST as $murid) ...
To
foreach($_POST['murid'] as $murid) ...
I am currently running into an issue, where I have this form consisting of checkboxes. I get the values of user preferences for the checkboxes from a database. Everything works great, and does what is supposed to do, however after I change and check some boxes and then hit the submit button, it will still show the old values to the form again. If I click again in the page again it will show the new values.
The code is shown below with comments.
<form action="myprofile.php" method="post">
<?php $usr_cats=array();
$qry_usrcat="SELECT category_id_fk
FROM user_categories
WHERE user_id_fk='".$_SESSION['user_id']."';";
$result = mysqli_query($conn,$qry_usrcat);
while($row = mysqli_fetch_array($result)){
$usr_cats[] = $row[0]; // getting user categories from db stored in array
}
$query_allcats="SELECT category_id,category_name, portal_name
FROM categories
INNER JOIN portals on categories.portal_id=portals.portal_id
ORDER BY category_id;"; // select all category queries
$result = mysqli_query($conn,$query_allcats);
while($row = mysqli_fetch_array($result)){
echo $row['portal_name'] . "<input "; //print categories
if(in_array($row['category_id'], $usr_cats)){ // if in array from db, check the checkbox
echo "checked ";
}
echo "type='checkbox' name='categories[]' value='";
echo $row['category_id']."'> ". $row['category_name']."</br>\n\t\t\t\t\t\t";
}
?>
<input type="submit" name="submit" value="Submit"/>
<?php
$qry_del_usrcats="DELETE FROM user_categories
WHERE user_id_fk='".$_SESSION['user_id']."';"; //delete all query
if(isset($_POST['submit'])){
if(!empty($_POST['categories'])){
$cats= $_POST['categories'];
$result = mysqli_query($conn,$qry_del_usrcats); //delete all
for ($x = 0; $x < count($cats); $x++) {
$qry_add_usrcats="INSERT INTO `user_categories` (`user_id_fk`, `category_id_fk`)
VALUES ('".$_SESSION['user_id']."', '".$cats[$x]."');";
$result = mysqli_query($conn,$qry_add_usrcats);
}
echo "success";
}
elseif(empty($_POST['categories'])){ //if nothing is selected delete all
$result = mysqli_query($conn,$qry_del_usrcats);
}
unset($usr_cats);
unset($cats);
}
?>
I am not sure what is causing to do that. Something is causing not to update the form after the submission. However, as i said everything works great meaning after i submit the values are stored and saved in the DB, but not shown/updated on the form. Let me know if you need any clarifications.
Thank you
Your procedural logic is backwards and you're doing a bunch of INSERT queries you don't need. As #sean said, change the order.
<?php
if(isset($_POST['submit'])){
if(isset($_POST['categories'])){
$cats= $_POST['categories'];
// don't do an INSERT for each category, build the values and do only one INSERT query with multiple values
$values = '';
for($x = 0; $x < count($cats); $x++) {
// add each value...
$values .= "('".$_SESSION['user_id']."', '".$cats[$x]."'),";
}
// trim the trailing apostrophe and add the values to the query
$qry_add_usrcats="INSERT INTO `user_categories` (`user_id_fk`, `category_id_fk`) VALUES ". rtrim($values,',');
$result = mysqli_query($conn,$qry_add_usrcats);
echo "success";
}
elseif(!isset($_POST['categories'])){ //if nothing is selected delete all
// you may want to put this query first, so if something is checked you delete all, so the db is clean and ready for the new data.
// and if nothing is checked, you're still deleting....
$qry_del_usrcats="DELETE FROM user_categories WHERE user_id_fk='".$_SESSION['user_id']."';"; //delete all query
$result = mysqli_query($conn,$qry_del_usrcats);
}
unset($usr_cats);
unset($cats);
}
?>
<form action="myprofile.php" method="post">
<?php $usr_cats=array();
$qry_usrcat="SELECT category_id_fk FROM user_categories WHERE user_id_fk='".$_SESSION['user_id']."';";
$result = mysqli_query($conn,$qry_usrcat);
while($row = mysqli_fetch_array($result)){
$usr_cats[] = $row[0]; // getting user categories from db stored in array
}
$query_allcats="SELECT category_id,category_name, portal_name FROM categories INNER JOIN portals on categories.portal_id=portals.portal_id ORDER BY category_id;"; // select all category queries
$result = mysqli_query($conn,$query_allcats);
while($row = mysqli_fetch_array($result)){
echo $row['portal_name'] . "<input "; //print categories
if(in_array($row['category_id'], $usr_cats)){ // if in array from db, check the checkbox
echo "checked ";
}
echo "type='checkbox' name='categories[]' value='";
echo $row['category_id']."'> ". $row['category_name']."</br>\n\t\t\t\t\t\t";
}
?>
<input type="submit" name="submit" value="Submit"/>
Typically this occurs due to the order of your queries within the script.
If you want to show your updated results after submission, you should make your update or insert queries to be conditional, and have the script call itself. The order of your scripts is fine, but you just need to do the following:
Take this query:
$qry_del_usrcats="DELETE FROM user_categories
WHERE user_id_fk='".$_SESSION['user_id']."';"
and put it inside the if statement so it looks like this:
if (isset($_POST['submit'] {
$qry_del_usrcats="DELETE FROM user_categories
WHERE user_id_fk='".$_SESSION['user_id']."';"
$result = mysqli_query($conn,$qry_del_usrcats);
[along with the other updates you have]
}
Also, you will need to move this entire conditional above the form itself; typically any updates, inserts, or deletes should appear year the top of the form, and then call the selects afterward (outside of the conditional)
I got this list of checkboxes that print out from database. I am able to retrieve data from database if user makes multiple checkbox and display it in table, but i cannot retrieved other information from database and display it in the same table.
This is my code:
<table border='1'>
<tr>
<th>TITLE</th>
<th>PERCENTAGE RESULT</th>
</tr>
<?php
if(isset ($_POST["submit1"]))
{
$selectedcheckbox = $_POST["selectedcheck"];
$query = "SELECT * FROM compareresult where subject=$selectedcheckbox";
$sql_query = mysql_query($query) or die('Error 3 :'.mysql_error());
while($data = mysql_fetch_array($sql_query,MYSQL_ASSOC)){
$result=$data['result'];
}
foreach($selectedcheckbox as $title)
{
echo "<tr>";
echo "<td>".$title."</td>";
echo "<td>".$result."</td>";
}
echo "</tr>";
}
?>
I want to display result after user select multiple checkbox, so I wrote:
echo $result in table
so that the result can be displayed in table beside the selected title, but I am getting an error:
Array to string conversion in C:\xampp\htdocs\sam\c.php on line 31 Error 3 :Unknown column 'Array' in 'where clause'
I am not at the moment in the environment to test your problem, and I do this out of my head, but try something like the following.
if(isset($_POST['submit1'])){
$checkbox = isset($_POST['selectedcheck']) ? $_POST['selectedcheck'] : array();
foreach($checkbox as $title){
$query = "SELECT * FROM compareresult where subject='".$title."'";
$result=mysql_query($query); // <-- to avoid SQL injections, please change your method from mysql_query to mysqli_query (use the mysqli functions instead of mysql)
while($data = mysql_fetch_array($result)){
$result=$data['result'];
echo "<tr>";
echo "<td>".$title."</td>";
echo "<td>".$result."</td>";
echo "</tr>
}
}
}
It checks first if your checkboxes are checked and if they are they put it in an array.
Then it runs the foreach statement, where it sets the checkbox value as title. It runs there if the query if it the title is in the database, if so, spit it out through the while loop. Rinse and repeat until done.
edit
I see you put your open tablerow statement in the foreach but close it outside. So either you want it all printed on one line or is it an error? If its on one line, make sure you open the table row BEFORE the while loop and end it AFTER, else it's like how i spit it out.
I'm making a website on which I have a set of data with checkbox. I need to delete multiple rows from database when I select multiple checkboxes. I don't know how to pass the id of the selected checkboxes to next page. Please help me.
Here is my code:
$select_qry="select * from data";
$result=mysql_query($select_qry);
$rows=mysql_num_rows($result);
if($rows>0)
{
?>
<form action="delete_submit.php" method="post">
<?php
for($i=0;$i<$rows;$i++)
{
$arr=mysql_fetch_assoc($result);
$id=$arr['id'];
$name=$arr['name'];
//echo $id;echo "<br>";echo $name;
?>
<input name="checkbox[]" type="checkbox" value="<?php echo $id;?>">
<?php
}
}
?>
How can I pass the selected checkboxes' id to the next page? Please help me.
Thanks
when form will be submitted then $_POST['checkbox'] will be set and contain the array of selected ids.
In your delete script
if(isset($_POST['checkbox']) && count($_POST['checkbox']) > 0){
$deleteIds = $_POST['checkbox']; // it will be an array
$sql = "DEFRE FROM tablename WHERE id in (".implode("," , $deleteIds).") ";
// run the query
}
I have a php form with some textbox and checkboxes which is connected to a database
I want to enter all the details into the database from the form.All the textbox values are getting entered except the checkbox values.I have a single column in my table for entering the checkbox values and the column name is URLID.I want to enter all the selected checkbox(URLID)values to that single column only ,separated by commas.I have attached the codings used.can anyone find the error and correct me?
NOTE: (The URLID values in the form is brought from the previous php page.those codings are also included.need not care about it)
URLID[]:
<BR><?php
$query = "SELECT URLID FROM webmeasurements";
$result = mysql_query($query);
while($row = mysql_fetch_row($result))
{
$URLID = $row[0];
echo "<input type=\"checkbox\" name=\"checkbox_URLID[]\" value=\"$row[0]\" />$row[0]<br />";
$checkbox_values = implode(',', $_POST['checkbox_URLID[]']);
}
?>
$URLID='';
if(isset($_POST['URLID']))
{
foreach ($_POST['URLID'] as $statename)
{
$URLID=implode(',',$statename)
}
}
$q="insert into table (URLID) values ($URLID)";
You really should separate your model from the view. It's 2011, not 2004 ;o
if (isset($_POST['checkbox_URLID']))
{
// Notice the lack of '[]' here.
$checkbox_values = implode(',', $_POST['checkbox_URLID']);
}
$URLIDs = array();
while($row = mysql_fetch_row($result))
{
$URLIDs[] = $row[0];
}
foreach ($URLIDs as $id)
{
?>
<input type="checkbox" name="checkbox_URLID[]" value="<?php echo $id; ?>" /><?php echo $id; ?><br />
<?php
}
?>
<input type="submit"/>