Question

I need a way to remove the “U.” part of the string only when “. U.” or “.U.” are at the end of the string itself (1st case is with a space and the 2nd without it).

1. Que tiene amistad.U.
2. Que tiene amistad. U.
3. Im fan of U. of Chicago.
4. Im fan of the Knicks. U. of Chicago.

From these 4 strings, it should only be applied to 1 and 2. So the resulting texts in each case would be:

1. Que tiene amistad.
2. Que tiene amistad.
3. Im fan of U. of Chicago.
4. Im fan of the Knicks. U. of Chicago.

I tried several alternatives with str_replace(), but this has to be done with regex because of the conditions bosted above. Any ideas? Thanks!

Answer 1

I’m answering this way too often, but a “lookbehind” assertion might work here:

= preg_replace("/(?<=\. |\.)U\.$/", "", $str);

That leaves dot and/or trailing space in, only looks at them as condition.