Question

I’m trying to get around some stylecheck issues and would like to add a fullstop ‘.’ to the end of every line which has a single line comment ( contains “//” ).

I would have thought there is a way to do this using regular expressions.

Any help would be much appreciated
Thanks

Answer 1

The easy way:

$result = preg_replace('%//.*%', '\0.', $subject);

The elegant way (only add a dot at the end if there isn’t one already:

$result = preg_replace('%//.*(?<!\.)$%m', '\0.', $subject);

Explanation:

//      # Match //
.*      # Match any characters except newlines
(?<!\.) # Assert that the last character isn't a dot
$       # right before the end of the line