rtrim function doesn't work with ending h letter

Question

$file = \"refinish.php\";
$folder = rtrim($file, \".php\");
echo $folder; // refinis

where is ending h ?

I tried with some other

Answer 1

rtrim() does not remove the string you specify in the second argument, but all characters in that string. In your case, that includes "h".

What you need here is a simple str_replace():

$folder = str_replace('.php', '', $file);

Edit: if you want to make sure it strips the ".php" part only from the end of the $file, you can go with @racetrack's suggestion below and use preg_replace() instead:

$folder = preg_replace('/\.php$/', '', $file);