Comma seperated implode & modifying returned string.

Posted on 16th Feb 2014 07:03 pm by admin

I have a PHP post form that posts up to 4 variables. I need whatever variables are passed to be combined into one comma seperated string (eg variable1,variable2,variable3,variable4). This i can do with the code below.

Code: [Select]$combo = array($one, $two, $three, $four);
$list = implode(",", $combo);

my problem is that the form fields are optional by design so that the user doesn't always post all 4 variables. Sometimes they will post 1, sometimes they will post all 4. So if a user only selects two fields and submits the form i will end up with a string looking like:
variable1,variable2,,
when what i really want is (note the removal of the trailing commas at the end of the string):
variable1,variable2

Can anyone point me towards a possible solution for this?

Your Answer:

Login to answer

Other forums

Calculating a rating by adding number of points and dividing by number of items
I have a site that users can post links to files to download. They can rate these files on a 1-5 sca

Preg_match question
I want to use preg_match to make sure a string is always 6 characters long and only contains 0-9 and

Java API in PHP?
I have an application that we use internally here at the office.

The software company provide

HELP with mysql_real_escape_string
I'm looking to remove apostrophes completely when someone enters lyrics but don't have a clue how to

Help with captcha script needed
Hello,

I am working on a script where reCAPTCHA or a similar form of CAPTCHA will be used, f

passing an array of objects after submit
How do I do this? This is what I have tried and it is not working.

<form method="

problem with array - multilingual page
this is my test page :
Code: <?php
if(isset($_GET['lang'])) {
if($_GET['la

Why doesn't this work? (SSH2)
This is my script:

Code: <?php
$connection = ssh2_connect('213.251.167.109', 22);

Help with looping
I have a comma separated list of colors taken from a database ($ICo) and a directory of images named

Casting Decimals in Oracle
This code worked as a query in DB2, but I am not sure what the syntax is for casting decimals in Ora