Check file extension in upload form in PHP
file-upload, php
Solution
Using `if( $ext !== 'gif'`) might not be efficient. What if you allow like 20 different extensions?
Try:
$allowed = array('gif', 'png', 'jpg');
$filename = $_FILES['video_file']['name'];
$ext = pathinfo($filename, PATHINFO_EXTENSION);
if (!in_array($ext, $allowed)) {
echo 'error';
}
Problem
I check the file extension for upload or not uploaded. My example methods worked, but now I need to understand if my methods (using `pathinfo`) is true. Is there another better and faster way? ``` $filename = $_FILES['video_file']['name']; $ext = pathinfo($filename, PATHINFO_EXTENSION); if ($ext !== 'gif' || $ext !== 'png' || $ext !== 'jpg') { echo 'error'; } ```