check if array element is empty/null

[droidus]

i am trying to check if the array element (which would be a file) is null or not.  when i run it, uploading one file, it says "Please select some files to upload first!" X 3.  what am i doing wrong?

 

my code: http://pastebin.com/m0k3fEd2

[Pikachu2000]

Paste the code here in code tags instead of a link to pastebin.

[droidus]

	// If the folder is not in the default position, we must place it in the right spot
for ($i = 0; $i<$filesCount; $i++) {
	if($filesCount[$i] != null) {
		if($folderDestination!="default") {
    			if (file_exists("users/" . $_SESSION['user'] . "/uploads/" . $folderDestination . "/" . $_FILES["file"]["name"][$i]))
			{
				echo $_FILES["file"]["name"][$i] . " already exists.<br>";
			}
			else
			{
				move_uploaded_file($_FILES["file"]["tmp_name"][$i],
				"users/" . $_SESSION['user'] . "/uploads/" . $folderDestination . "/" .  $_FILES["file"]["name"][$i]);
				echo "Your file has been successfully uploaded, and you can now view it right away!<br><a href='users/' . $_SESSION[user] .'/uploads/' . $folderDestination . '/' .  $_FILES[file][name][$i]Click here to go to your file!";
			}
		} 
		else 
		{ // If else, we put it in the uploads folder
			if (file_exists("users/" . $_SESSION['user'] . "/uploads/" . $_FILES["file"]["name"][$i]))
			{
				echo $_FILES["file"]["name"][$i] . " already exists.<br>";
			} 
			else 
			{
      				move_uploaded_file($_FILES["file"]["tmp_name"][$i],
      				"users/" . $_SESSION['user'] . "/uploads/" . $_FILES["file"]["name"][$i]);
  				echo "Your file has been successfully uploaded, and you can now view it right away!<br><a href='users/$_SESSION[user] /uploads/$_FILES[file][name][$i]' target='_blank'>Click here to go to your file</a>!";
      			}
		}
	} else { echo "Please select some files to upload first!"; }
}

[Pikachu2000]

This doesn't make any sense:

 

for ($i = 0; $i<$filesCount; $i++) {
	if($filesCount[$i] != null) {

 

Is $filesCount an array, or is it not an array?

[droidus]

yes, it is.

[Pikachu2000]

Then what is this: $i < $filesCount supposed to do? If you want to know the number of elements in the array, you need to find number that with count. You can't directly compare an integer to an array. In fact, I'm pretty sure you should be getting an infinite loop with that code because $i will always evaluate as less than $filesCount.

[droidus]

but i have this defined:

 

$filesCount = count($file);

[trq]

Then $filesCount is no longer an array is it.

[droidus]

ok; anything else that sticks out as to why it wouldn't work?

[jcbones]

So that would mean that:

if($filesCount[$i] != null) {

Should be:

if($files[$i] != null) {

 

Right?

[mikesta707]

No. The problem is you are overwriting your array with the value of its size. As far as PHP is concerned, you no longer have an array, since you changed the reference to it to another piece of data. Its kind of like the size of the array (say, 5) killed the array and stole his identity...

 

What you want to do is change the name of the variable you use to store the size of the array, or use the size of the array directly in the for loop. for example

//assuming $filesCount is your array
$count = count($filesCount);

//now we still have $filesCount
for ($i = 0; $i<$count; $i++) {
	if($filesCount[$i] != null) {
...

or

//dont change $filesCount
for ($i = 0; $i<count($filesCount); $i++) {
	if($filesCount[$i] != null) {

[Buddski]

but i have this defined:

 

$filesCount = count($file);

Says to me that the array of files is $file (judging by the code posted at least), which means the file should be called using, like jcbones said,

$file[$i]

 

It seems the OP is confused about which is the array and which isnt