Concatenation not working to display in a textbox(textarea)

hi,

i have an array that stores different id numbers (for example, 1, 7, 10, etc.) coming from selected items from several checkboxes ("DocID") in a previous php page.
i can use implode to print the whole array and it does ok, my problem is when i try to print the resulting id numbers concatenated with a string.
the string is "http://localhost/oge/detail.php?doc_id="

The resulting text should be (ammount of ids is variable):
http://localhost/oge/detail.php?doc_id=1
http://localhost/oge/detail.php?doc_id=7
http://localhost/oge/detail.php?doc_id=10

and this concatenation should be displayed to a text area.

See my code:
<?php

	if (isset($_POST['DocID'])) 
		{
			$ruta="http://localhost/dms/detail.php?doc_id=";
			$SelectedDocuments = implode("\n", $_POST['DocID']);
			
			foreach ($SelectedDocuments as $key=>$value)
				{
					print("<td><textarea name='detail' cols='50' rows='4' id='detail'>$value</textarea></td>");
				}
		}
?>

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José PerezAsked:
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Ray PaseurConnect With a Mentor Commented:
You might want to use foreach on $_POST["DocID"].

This code construct...

$SelectedDocuments = implode("\n", $_POST['DocID']);
foreach ($SelectedDocuments as $key=>$value)

... turns the POST data into a string - almost certainly not what you want.
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wmcdon7160Commented:
The $_POST variable and your URL examples don't match. Was that intentional?
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Ray PaseurCommented:
Use var_dump($_POST) to see the contents of the POST array.  If you're still unsure, please post that output here.  Thanks, ~Ray
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José PerezAuthor Commented:
wmcdon7160, if you mean "DocID" is different to "doc_id", that is correct, is intentional for not confusing.

Ray_Paseur, this is the result:

array(2) { ["DocID"]=> array(2) { [0]=> string(1) "1" [1]=> string(1) "2" } ["mySubmit"]=> string(19) "Send Document Links" } var_dump1 2
Warning: Invalid argument supplied for foreach() in C:\AppServ\www\oge\send.php on line 11
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José PerezAuthor Commented:

sorry:

array(2) { ["DocID"]=> array(2) { [0]=> string(1) "1" [1]=> string(1) "2" } ["mySubmit"]=> string(19) "Send Document Links" } var_dump1 2
Warning: Invalid argument supplied for foreach() in C:\AppServ\www\dms\send.php on line 11

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José PerezAuthor Commented:
first of all, i think we should make the foreach work. maybe that is the key!
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Ray PaseurCommented:
Let's look at this code.

$SelectedDocuments = implode("\n", $_POST['DocID']);
foreach ($SelectedDocuments as $key=>$value)

The first line returns the value of the implode() function.  See the man page here:
http://us3.php.net/manual/en/function.implode.php
To quote, "Returns a string containing a string representation of all the array elements in the same order, with the glue string between each element."

The second line uses the string, incorrectly, in foreach().  See the man page here:
http://us3.php.net/manual/en/control-structures.foreach.php
To quote, "foreach works only on arrays, and will issue an error..."

As I wrote above, "You might want to use foreach on $_POST["DocID"]."
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José PerezAuthor Commented:
i have tried hundres of times to see where is my error on the forech sentence, cant see it! i'm frustrated. i even looked into google, and also read the man pages but i still can't see where's the error.

please help.
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Ray PaseurCommented:
Please post the code as you have it now, so that I can install it on my server and run it, thanks.
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José PerezAuthor Commented:
i tried this code, but it didn't work either :(

$SelectedDocuments = implode("http://localhost/dms/detail.php?doc_id=", $_POST['DocID']);
<?php

	if (isset($_POST['DocID'])) 
		{
			//$ruta="http://localhost/dms/detail.php?doc_id=";
			var_dump($_POST);
			$SelectedDocuments = implode("\n", $_POST['DocID']);
			echo var_dump;
			echo $SelectedDocuments;
			
			foreach ($SelectedDocuments as $key)
				{
					echo $key;
				}
		}
?>

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Ray PaseurCommented:
Two questions:  (1) What is the EXACT URL you used to run this script when you tested it, and (2) What did you find in $_POST, printed out on line 6?

I think we are getting close if we can find those things out.
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José PerezAuthor Commented:
http://localhost/dms/send.php is the url of this page. that comes from the http://localhost/dms/list.php wich is a page that contains a list of documents with checkboxes where a user can select 1 or more documents and those links are sent to "send.php"

send.php it's supposed to be a textbox/textarea where the links are copied to... but concatenated with $ruta, that is the url, so finally the user receives a link to that specific documents.

$_POST contains the ids othe documents selected in the previous page, for example, if i select 4 documents, it sends those documents id's, example, 1,3,5,6 if i chosee those 4 checkboxes.
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Ray PaseurCommented:
Please let me ask this again.  Please just copy and paste the answers - I do not need an explanation, I need to see the ACTUAL data.

(1) What is the EXACT URL you used to run ONLY THIS this script when you tested it, and (2) What did you find in $_POST, printed out on line 6?
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José PerezAuthor Commented:
the url is a "send.php" submit button that is located under http://localhost/dms/send.php

if i select checkoxes 1, 3 and 6, the result is the following:

array(2) { ["DocID"]=> array(3) { [0]=> string(1) "1" [1]=> string(1) "3" [2]=> string(1) "6" } ["mySubmit"]=> string(19) "Send Document Links" }

hope this helps.
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Ray PaseurCommented:
I think so.  See if this code makes sense.  $_POST["DocID"] is an array, so you need to use an iterator on that array.
foreach ($_POST["DocID"] as $thing)
{
   echo "<br/>$thing";
}

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José PerezAuthor Commented:
that d like a charm!

now we have added the "return"amongst id's, now we need to add the concatenation with the prefix "http://localhost/dms/detail.php?doc_id="

the result should be displayed into the textarea, code below:

<td><textarea name="detail" cols="50" rows="4" id="detail"><?=$SelectedDocuments?></textarea></td>

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Guy Hengel [angelIII / a3]Billing EngineerCommented:
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.
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