How to rename and save files in php - php

Question

This is my html form
<form action="index.php" method="post" enctype="multipart/form-data">
Send these files:<br />
<input name="userfile[]" type="file" /><br />
<input name="userfile[]" type="file" /><br />
<input type="submit" value="Send files" />
</form>
This is my index.php file
<?php
foreach ($_FILES["userfile"]["error"] as $key => $error) {
if ($error == UPLOAD_ERR_OK) {
echo"$error_codes[$error]";
move_uploaded_file(
$_FILES["userfile"]["tmp_name"][$key],
$_FILES["userfile"]["name"][$key]
) or die("Problems with upload");
}
}
?>
**The code is working properly. But, What I really need is to change the name of the 1st uploaded file to birthcertificate and the name of the 2nd uploaded file into NIC. **
**Example : If I upload a file named 123 or abc (whatever the name) the 1st file's name should be birthcertificate and the 2nd file's name should be NIC. **

Answer 1

There are probably lots of ways to do this.
I thought that making a list of the new file names
might be the way to go.
<?php
// Make a list of the new file names
$newFileNames = ['birthcertificate', 'NIC'];
foreach ($_FILES["userfile"]["error"] as $key => $error) {
if ($error == UPLOAD_ERR_OK) {
echo"$error_codes[$error]";
// Grab new file name
$newFileName = array_shift($newFileNames);
// Make sure we actually got one
if ( $newFileName ) {
move_uploaded_file(
$_FILES["userfile"]["tmp_name"][$key],
$newFileName)
or die("Problems with upload");
}
}
}

Answer 2

move_uploaded_file(file, location);
You can use file and new name in location parameter like this:
$newname = "yourimg.png";
enter code here
move_uploaded_file($_FILES["userfile"]["tmp_name"][$key], "your location" . $newname);
This is the basic way of renaming, make changes to the loop for renaming both files. If you only upload 2 files at a time, you can use the array index for your logic.

Answer 3

You can rename a file:
Instead of below code inside foreach you have shared
move_uploaded_file(
$_FILES["userfile"]["tmp_name"][$key],
$_FILES["userfile"]["name"][$key]
) or die("Problems with upload");
You can use:
$temp = explode(".", $_FILES["userfile"]["name"]);
$newfilename = 'birthcertificate' . '.' . end($temp);
move_uploaded_file($_FILES["userfile"]["tmp_name"], $newfilename) or die("Problems with upload");
Try giving the file seperate names, in PHP you can receive them and make in one array if you need
You can also refer to this link:
How to rename uploaded file before saving it into a directory?