Multiple File Uploading (File Restriction error) - php

Question

I want to upload multiple files in 1 go. I have successfully tested the code on a single file upload (removed the for each loop) then its all working. File is uploading and checking file size/file type. But when I tried to put in a for loop to be able to do multiple files, its return "This file extension is not allowed, please upload a JPEG or PNG file"
HTML Code:
<form action="fileUpload.php" method="POST" enctype="multipart/form-data">
<table>
<tr><td>File 1</td> <td><input name="file_upload[]" type="file" class="multi"/> </td></tr>
<tr><td>File 2</td> <td><input name="file_upload[]" type="file" class="multi"/> </td></tr>
<tr><td></td> <td> <input type="submit" name="upload" value="Upload"><input type="reset"> </td> </tr>
</table>
</form>
PHP code:
foreach ($_FILES['file_upload']['tmp_name'] as $key => $tmp_name)
{
$rootDir = getcwd(); // get current working directory
$uploadDirectory = "/uploads/";
$fileExtensions = ['jpeg','jpg','png', 'pdf', 'docx',]; // Get all the file extensions
$fileType = $_FILES['file_upload']['type'][$key];
// $fileExtension = strtolower(end(explode('.',$fileName)));
$fileExtension = pathinfo($_FILES["file_upload"]["tmp_name"][$key]);
$uploadPath = $rootDir . $uploadDirectory . basename($fileName);
// echo $uploadPath;
}
?>

Answer 1

Change :
$fileExtension = pathinfo($_FILES["file_upload"]["tmp_name"][$key]);
to :
$fileExtension = pathinfo($_FILES["file_upload"]["name"][$key]);
$fileExtension = $fileExtension['extension'];
Previously your code checks for the temporary files extension.