insert and edit with checkbox coding

Question

I am a newible on php and I am following a video to learn inserting data in website to database, but I face a huge problem.

As I am going to from many groups from many members, i create some checkboxs for member to register. I followed this video tutorial,but have error.

<?php
//$_SESSION['name'];
session_start();
echo "student";
?>

<form action="" method="POST">    
<input type="checkbox" name="group[]" value="group1">group1<br>
<input type="checkbox" name="group[]" value="group2">group2<br>
<input type="checkbox" name="group[]" value="group3">group3<br>
<input type="checkbox" name="group[]" value="group4">group4<br>
<input type="checkbox" name="group[]" value="group5">group5<br>

<input type="submit" name="submit" value="submit">   
</form>

<?php

    if  (isset($_POST['submit']))
    {
        //print_r($_POST);
    echo implode(',', $POST['group']);
}
?>

</h1>
<a href="logout.php">Logout</a>

All things that I wanna do was followed for these coding but still have error

Warning: implode(): Invalid arguments passed in C:\xampp\htdocs\fyp\student.php on line 37

echo implode(',', $POST['group']);

what was wrong with it, thank you for any suggestion

Drudge Rajen · Accepted Answer · 2016-03-01 03:29:13Z

1

You are missing $_ before POST .

Instead of this

echo implode(',', $POST['group']);

use this

echo implode(',', $_POST['group']);

answered Mar 1, 2016 at 3:29

Drudge Rajen

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Danny Flack · Accepted Answer · 2016-03-01 03:52:18Z

0

You're forgetting the underscore before the POST. Here is that line fixed:

echo implode(',', $_POST['group']);

There are a few other simple issues that might cause some trouble later on. First, in terms of syntax, you should close your HTML input tags (like below):

<input type="checkbox" name="group[]" value="group1" />group1<br>
...

Next, you will get this same error when no checkboxes are selected as the variable $_POST['group'] has not been defined yet. You can use the PHP empty() function to test this variable (http://php.net/manual/en/function.empty.php) before you call the implode().

answered Mar 1, 2016 at 3:52

Danny Flack

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