[SOLVED] PHP Implode Error

[SJames]

I have the following code, a simple implode function:

 

$titles = $_POST['titles'];
$titles = implode("#", $titles);

 

I am positive that "$titles" is an array, but I get an error message from PHP saying:

 

Warning: implode() [function.implode]: Bad arguments. in /home/.... on line 12

*I replaced the rest of the URL with "...." to save space.

 

Does anyone know why I'm getting this error? I've also tried removing the first value from the function, so it would read "implode($titles)". Using another variable with the implode doesn't work either, eg: "$newVariable = implode("#", $titles)"

[lemmin]

Do a print_r($titles) and post the result, please.

[d22552000]

it will probably print: "array()"

[SJames]

I wrote:

 

$titles = $_POST['titles'];
print_r($titles);

 

I received:

 

Array

[d22552000]

told ya.

 

That's a valid array alright.  Check on php.net for implode and check your syntax.

[SJames]

I did, I did it exactly the same, I still get the error....

[lemmin]

Doesn't that mean it is an array with nothing in it? Wouldn't that mean it can't implode anything? If you do a print_r($_POST), does it show titles as a subarray?

[akitchin]

if you receive "Array" and that's it when you run print_r() on the variable, it means you've got an empty array.  you may want to run a check to see if it's both an array and is NOT empty:

 

if (is_array($titles) && !empty($titles))
{
  $titles = implode('#', $titles);
}

 

EDIT:  it just dawned on me - if there are no parentheses after "Array", you probably actually just have a string with the value 'Array'.

[SJames]

print_r($_POST) shows it as an array

[lemmin]

I guess that doesn't really mean anything, I don't remember what I was getting at with that. You have a problem with your input from POST. Could you post the code that passes the array to your php file with POST?

[SJames]

Hmmm... I did your suggestion, it appears that the array is empty, but part of the code is a foreach() that shows the contents of the array, and the values are indead inside.

[lemmin]

Didn't you just post a thread saying that your foreach function wasn't working? If you show some code it will be a lot easier for people to help you.

[akitchin]

if you're trying to run a foreach() on $titles AFTER using implode(), you're going to have problems because in the process of imploding (if it actually works), you've converted the array to a string due to the same variable name being used.

[SJames]

those are actually two seperate projects, they just both have a $titles variable

[SJames]

Never mind, I got it working: The page that puts the values into the array wasn't doing it right. Thanks for helping!