Undefined Index errors, Warning implode() function error

Forum|Forum|16 years ago
January 26, 2010
1 reply
1833 views

ERROR MESSAGES:

Notice: Undefined index: membership in C:\htdocs\member_application.php on line 76

Warning: implode() [function.implode]: Invalid arguments passed in C:\htdocs\member_application.php on line 76

Notice: Undefined index: prescircle in C:\htdocs\member_application.php on line 82

I have an extensive form that I'm having trouble with the radio buttons and the checkboxes (I thought I had this figured out from a previous discussion).

I've posted the ones regarding the errors:

76)     $membership = implode(", " , $_POST['membership']);
    if (empty($membership)) {
        $error['membership'] = 'Please select all that apply';
        } 
82)   $prescircle = $_POST['prescircle'];

I thought I defined the indexes in the code below, and I'm not sure I understand why there's an invalid argument?

Code:

<fieldset>
<label for="membership">Please select all that apply:</label><?php if (isset($error['membership'])) { ?>
<span class="warning"><?php echo $error['membership']; ?></span>
<?php } ?>
<input type="checkbox" name="membership[]" value="Annual Membership" id="annualmembership" <?php
            $OK = isset($_POST['membership']) ? true : false;
            if ($OK && isset($missing) && $_POST['membership'] == 'Annual Membership') { ?>             
            <?php } ?>
            />
<label for="annualmembership">Annual Membership</label>
<input type="checkbox" name="membership[]" value="President's Circle" id="presidentcircle" <?php
            if ($OK && isset($missing) && $_POST['membership'] == 'President\s Circle') { ?>
            <?php } ?> />
<label for="presidentcircle">President's Circle (optional)</label>
</fieldset>

<span style="clear: right;">
<label for="prescircle"><strong>PRESIDENT'S CIRCLE (optional)</strong></label><br />
<input name="prescircle" type="radio" value="$250.00 - Platinum" id="platinum" <?php 
    if (!$_POST || (isset($error) && $_POST['prescircle'] == 'platinum')) { echo
    'checked="checked"';
} ?> />
<label for="platinum">$500.00 - Platinum</label>
<br />
<input name="prescircle" type="radio" value="$250.00 - Gold" id="gold" <?php 
    if (isset($error) && $_POST['prescircle'] == 'gold') { echo
    'checked="checked"';
} ?> />
<label for="gold">$250.00 - Gold</label>
<br />
<input name="prescircle" type="radio" value="$100.00 - Silver" id="silver"  <?php 
    if (isset($error) && $_POST['prescircle'] == 'silver') { echo
    'checked="checked"';
} ?> />
<label for="silver">$100.00 - Silver</label>
<br />
<input name="prescircle" type="radio" value="$50.00 - Bronze" id="bronze"  <?php 
    if (isset($error) && $_POST['prescircle'] == 'bronze') { echo
    'checked="checked"';
} ?> />
<label for="bronze">$  50.00 - Bronze</label></span>
<br />
<input name="prescircle" type="radio" value="None" id="none" <?php 
    if (isset($error) && $_POST['prescircle'] == 'none') { echo
    'checked="checked"';
} ?>  />
<label for="none">None</label>
</fieldset>

I'm not sure where this code is going wrong.

Server side applications

This topic has been closed for replies.

David_Powers

Inspiring

Checkboxes and radio buttons are not included in the $_POST or $_GET arrays if they're not selected.

When doing your validation, you need to use isset() to check whether the array index exists:

if (isset($_POST['membership'])) {
  $membership = implode(', ', $_POST['membership']);
} else {
  // membership is missing
}

T

toad78Author

Known Participant

That does help, but I guess I'm back to square one because:

I already have radio buttons selected when the application loads with a default, but if someone misses something (i.e., checking a checkbox because there is no default checked) in the app and the it is submitted, I get the error message:

Notice: Undefined variable: membership

which is this:


<label for="membership">Please select all that apply:</label>
<input name="membership[]" type="checkbox" id="annualmembership" value="Annual Membership" <?php
            $OK = isset($_POST['membership']) ? true : false;
            if ($OK && isset($error) && $_POST['membership'] == 'Annual Membership') { ?>             
            <?php } ?>
            />
<label for="annualmembership">Annual Membership</label>
<input type="checkbox" name="membership[]" value="President's Circle" id="presidentcircle" <?php
            if ($OK && isset($error) && $_POST['membership'] == 'President\s Circle') { ?>
            <?php } ?> />
<label for="presidentcircle">President's Circle (optional)</label>
<br />
<?php if (isset($error['membership'])) { ?>
<span class="warning"><?php echo $error['membership']; ?></span>
<?php } ?>

if (isset($_POST['membership'])) {
  $membership = implode(', ', $_POST['membership']);
} else {
   $error['membership'] = 'Please select all that apply';
   }

Plus, my radio buttons do not retain their value, which I thought was fixed with this:

<label for="plaque">Do you have a plaque? </label>
<input name="plaque" type="radio" value="Yes I have a plaque" id="plaque-yes" <?php 
    if (!$_POST || (isset($error) && $_POST['plaque'] == 'Yes')) { echo
    'checked="checked"';
} ?>    />
<label for="plaque-yes">Yes</label>

<input name="plaque" type="radio" value="No, I do not have a plaque" id="plaque-no" <?php 
    if (isset($error) && $_POST['plaque'] == 'No') { echo
    'checked="checked"';
} ?>    />
<label for="plaque-no">No</label>

I've been working on this for ten hours and am not sure what else is going on to cause this problem. That, or I'm completely discombobulated that I can't think straight!

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded