Remove last two digits of filename [closed]

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Closed 6 years ago.

How can I remove the last two characters of a filename in PHP?

http://www.nws.noaa.gov/weather/images/fcicons/tsra50.jpg
# becomes
http://www.nws.noaa.gov/weather/images/fcicons/tsra.jpg

and

http://www.nws.noaa.gov/weather/images/fcicons/hi_shwrs60.jpg
# becomes
http://www.nws.noaa.gov/weather/images/fcicons/hi_shwrs.jpg

The extension will always be 3 characters (4 with the period).

回答1:

You could use a negative value as start to substr_replace if you know that the number always is two digits:

$filename = 'filename11.jpg';
$newfilename = substr_replace($data, '', -6, 2);

来源：https://stackoverflow.com/questions/19737927/remove-last-two-digits-of-filename