How to implode a 2 dimensional array

Question

I have a 2-d array as shown below :-

$variables = array(
           "firstname" => "Sachin",
           "lastname" => "Tendulkar",
           "course" => array(
                         0 => "PHP",
                         1 => "HTML",
                         2 => "CSS",
                         3 => "Javascript"
                 )
          );

I want to implode the "$variables" array and get only the list of values present in "course" in a variable separated by comma. Is it possible using array_column() ? Something like this is not working :-

$string = implode("," , array_column($variables,'course');
echo $string; //gives no output
var_dump($string); //gives string '' (length=0)

Kevin · Answer 1 · 2014-09-15T12:12:16.160

1

No just directly access them instead:

$variables = array(
    "firstname" => "Sachin",
    "lastname" => "Tendulkar",
    "course" => array(
         0 => "PHP",
         1 => "HTML",
         2 => "CSS",
         3 => "Javascript"
     )
);

$courses = implode(', ', $variables['course']); // point it directly on the desired array
echo $courses; // PHP, HTML, CSS, Javascript

edited Sep 15 '14 at 12:12

answered Sep 15 '14 at 12:07

Kevin

41,694
12
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It throws this :- Warning: implode(): Invalid arguments passed in C:\wamp\www\PhpSample\index.php. But works, I wanted it without this warning. – sachin tendulkar Sep 15 '14 at 12:11
@sachintendulkar are you sure the example array you provided are exact as the one we are using? – Kevin Sep 15 '14 at 12:13
Yes, it is the same array – sachin tendulkar Sep 15 '14 at 12:14
@sachintendulkar are you really really sure? seems fine here http://codepad.viper-7.com/675Eld – Kevin Sep 15 '14 at 12:14
Hmm, its strange,it works there, but not for me – sachin tendulkar Sep 15 '14 at 12:17

score 0 · Answer 2 · answered Sep 15 '14 at 12:05

0

$string = implode(',', $variables['course']);

answered Sep 15 '14 at 12:05

Dexa

1,641
10
25

It throws this :- Warning: implode(): Invalid arguments passed in C:\wamp\www\PhpSample\index.php. But works, I wanted it without this warning. – sachin tendulkar Sep 15 '14 at 12:12
Make sure this is the only implode and you don't have leftovers from your previous example. For provided array this is correct solution. – Dexa Sep 15 '14 at 12:18

score 0 · Answer 3 · answered Sep 15 '14 at 12:08

0

Just simply implode it by pointing it to the array in which you want to implode. Here is how your code should look like

$variables = array(
           "firstname" => "Sachin",
           "lastname" => "Tendulkar",
           "course" => array(
                         0 => "PHP",
                         1 => "HTML",
                         2 => "CSS",
                         3 => "Javascript"
                 )
          );


$string = implode(',', $variables['course']);

echo $string; //gives output
var_dump($string); //gives string

Hope this helps you

answered Sep 15 '14 at 12:08

Utkarsh Dixit

4,267
3
15
38

It throws this :- Warning: implode(): Invalid arguments passed in C:\wamp\www\PhpSample\index.php. But works, I wanted it without this warning. – sachin tendulkar Sep 15 '14 at 12:15
First of all tell me that are you using the same array because this code is working fine here http://www.compileonline.com/execute_php_online.php. Please test on this site, there might be a problem with your php version – Utkarsh Dixit Sep 15 '14 at 12:18

How to implode a 2 dimensional array

3 Answers3