Retrieve unknown $_post variables

[Kurt111780]

Hello,

I need to retrieve file names from a form submission but I don't know how many fields are submitted. Each field has a name of file1, file2, file3, etc. I'm trying to do something like this but it’s not working.

$i = 1;
while ($_POST['file' . $i] != "")
	{
		echo $i;
		$i++;
	}//end while

Then I have to put the file names into an array. Is there a way to use a variable within $POST or is there a different way to do this?

Thanks,
Kurt


It's only easy when you know how.

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[sleipnir214]

$_POST['file' . $i] is perfectly legal.

Another way to do this is to change the way your fields are named. Instead of naming your form fields "file1", "file2", etc., name them "file[1]", "file[2]", etc. Thatt way, $_POST['file'] will itself be an array.

You've said, "retrieve file names from a form submission". Are these form inputs of type "file"? If so, you need to be looking in $_FILES, not $_POST.

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[Kurt111780]

I just need to retrieve the name of the files which are already stored on the server. But I just realized why its not working. I had this on the previous page for the user to select files (file names) but it obviously won't work.

<?php
$folder	=  $_GET['folder'];
$dir 	= "D:/inetpub/promessinc/php/" . $folder . "/";
$path	= "files/";

// Open a known directory, and proceed to read its contents
if (is_dir($dir))
{
   if ($dh = opendir($dir)) 
   {	$i = 0;
       while (($file = readdir($dh)) !== false) 
	   {
			if($file != "." && $file != "..")
			{
		   		?>
  				<tr>
				<td><input type="checkbox" value="<?= $file ?>" name="<?= "file" . $i ?>" /></td>
				<td><?= $file ?></td>
  				</tr> 
<?php			$i++;
 			}//end if . ..
 		}//end while
		closedir($dh);
	}//end if $dh
}//end if is_dir
?>

It's only easy when you know how.

http://www.seedandgarden.com

 

[Kurt111780]

Hi sleipnir214,

I did what you said and its works good. easier than I thought it would be.

changed this line

				<td><input type="checkbox" value="<?= $file ?>" name="file[]" /></td>

And added this on the next page

$fileName = $_POST['file'];
	foreach ($fileName as $value)
	{
		echo "File Name: " . $value . "<br />";
	}

Now I just gota loop through each one adding it to the DB with the random numbers.

Thanks,
Kurt

It's only easy when you know how.

http://www.seedandgarden.com