Upload Multiple files using php

upload_files.php

<form method="post" enctype="multipart/form-data">
  <input type="file" id="file" name="files[]" multiple />
  <input type="submit" value="Upload" class="btn btn-success"/>
</form>

<?php
$valid_formats = array("c", "cpp", "php", "java", "bat", "js" ,"sql" ,"html");
$max_file_size = 1024*5000; //100 kb
$path = "myfiles/"; // Upload directory
$count = 0;

if(isset($_POST) and $_SERVER['REQUEST_METHOD'] == "POST"){
	// Loop $_FILES to exeicute all files
	foreach ($_FILES['files']['name'] as $f => $name) {     
	    if ($_FILES['files']['error'][$f] == 4) {
	        continue; // Skip file if any error found
	    }	       
	    if ($_FILES['files']['error'][$f] == 0) {	           
	        if ($_FILES['files']['size'][$f] > $max_file_size) {
	            $message[] = "$name is too large!.";
	            continue; // Skip large files
	        }
			elseif( ! in_array(pathinfo($name, PATHINFO_EXTENSION), $valid_formats) ){
				$message[] = "$name is not a valid format";
				continue; // Skip invalid file formats
			}
	        else{ // No error found! Move uploaded files 
	            if(move_uploaded_file($_FILES["files"]["tmp_name"][$f], $path.$name))
	            $fullPath= $path.$name;
				$ext = pathinfo($name, PATHINFO_EXTENSION);
				$query = "insert into file_management (file_owner,file_upload_time,file_name,file_path,file_type) values('$user',now(),'$name','$fullPath','$ext')";
				$conn->query($query);
				if($conn->errno)
					echo $conn->errno;
				if($conn->error)
					echo $conn->error;
					
				$count++; // Number of successfully uploaded file
	        }
	    }
	}
}
?>