Question

I’m doing this right now in my code to see if a file name has the extension .txt, but I think it basically checks if it contains .txt and not necessarily ends with .txt. Does php have a better way to do extension checking instead of using strpos?

strpos($filename,'.txt') !== false

Answer 1

You can allow multiple extensions by adding to the array.

$allowed = array('txt');

if (in_array(pathinfo($filename, PATHINFO_EXTENSION), $allowed)){
    // Has the correct file extension
}

or a simpler version which allows only txt extensions could be:

if (pathinfo($filename, PATHINFO_EXTENSION) == 'txt'){
    // Has the correct file extension
}