I am trying to sanitize a filename.
I would like to know of a way to remove all decimals from a files name except the last one. I need to keep the last one because the extension follows that.
EXAMPLE:
abc.def.ghij-klmnop.q234.mp3
This file should look like
abcdefghij-klmnopq234.mp3
Some extensions are longer than 3 characters.
You can use a regex with a positive lookahead. Like this:
$withdots = 'abc.def.ghij-klmnop.q234.mp3';
$nodots = preg_replace('/\.(?=.*\.)/', '', $withdots);
After executing the above, $nodots
will contain abcdefghij-klmnopq234.mp3
. The regular expression is basically saying match all periods that are followed by another period. So the last period won't match. We replace all matches with an empty string, and we're left with the desired result.
That should do it:
$file = 'abc.def.ghij-klmnop.q234.mp3';
$parts = pathinfo($file);
$filename = str_replace('.', '', $parts['filename']).'.'.$parts['extension'];
You could also do this, it should be faster then using pathinfo & str_replace.
$parts = explode('.', 'abc.def.ghij-klmnop.q234.mp3');
$ext = array_pop($parts);
$nodots = implode('', $parts) . '.' . $ext;
Assuming $s
is the name of the file.
$s = (($i = strrpos($s, '.')) === false) ? $s :
str_replace('.','',substr($s,0,$i)).substr($s,$i);
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