Removing last part of string divided by a colon

Question

I have a string that looks a little like this, world:region:bash

It divides folder names, so i can create a path for FTP functions.

However, i need at some points to be able to remove the last part of the string, so, for example

I have this world:region:bash

I need to get this world:region

The script wont be able to know what the folder names are, so some how it needs to be able to remove the string after the last colon.

Answer 1

$res=substr($input,0,strrpos($input,':'));

I should probably highlight that strrpos not strpos finds last occurrence of a substring in given string