[RESOLVED] weird rtrim problem, please help

[gregsmith]

Hi there,

I have a strange problem. This code will seperate a file into it's filename and extension.

<?php

//This one works fine

$file = 'index.php';
$file_name = rtrim($file, strrchr($file, '.'));
$file_ext = strrchr($file, '.');
echo "file: ".$file."<br />"; //echoes file: index.php
echo "file_name: ".$file_name."<br />"; //echoes file_name: index
echo "file_ext: ".$file_ext."<br /><br />"; //echoes file_ext: .php

?>

<?php
//This is the same code but the 's' from 'mystylesheets' seems to disappear for some reason

$file = 'mystylesheets.css';
$file_name = rtrim($file, strrchr($file, '.'));
$file_ext = strrchr($file, '.');
echo "file: ".$file."<br />"; //echoes file: mystylesheets.css
echo "file_name: ".$file_name."<br />"; //echoes file_name: mystylesheet
echo "file_ext: ".$file_ext."<br /><br />"; //echoes file_ext: .css

?>

Can anyone explain to me why the first one is left intact but if the last letter of the filename is an s, it is removed? Thanks.

[gregsmith]

Ah, don't worry! I've realised I'm using rtrim in the wrong way. I thought it would just remove '.css' not all instances of the characters '.' 'c' and 's' from the right.

Oh well, maybe this thread will help someone else out that's as dumb as me 😃

[devinemke]

by calling [man]rtrim[/man] with the second argument you are trimimg off any occurance of "ss" because that string is in "css".

anyway, you should really use [man]pathinfo[/man] to do what you are trying to do.

[gregsmith]

devinemke wrote:

by calling [man]rtrim[/man] with the second argument you are trimimg off any occurance of "ss" because that string is in "css".

anyway, you should really use [man]pathinfo[/man] to do what you are trying to do.

Yeah, I realised rtrim wasn't what I wanted and used this instead

$file_name = substr($file, 0, strrpos($file, '.'));
$file_ext = strrchr($file, '.');

However, this is the first time I've heard pathinfo() - I'll definitely use it now instead.

Thanks for the heads up.

[bradgrafelman]

Don't forget to mark this thread resolved.