I've been working on some PHP code lately and I'm stuck trying to add comments to a regular expression. I know that comments can be really helpful for documentation and maintaining code, but I'm not quite sure about the correct way to add comments specifically to a regular expression.
Here's what I have so far:
$pattern = '/^[A-Za-z\s]+$/';
I want to add a comment to explain what this regular expression does. From what I've read, it seems like using the `x` modifier along with `(?# ... )` is a possible way to add comments.
So, should I write the comment like this?
$pattern = '/
^ # Start of line
[A-Za-z] # Any letter
\s # Any whitespace character
$ # End of line
Or is there a better way to do this? I want to make sure I'm following the best practices for adding comments to regular expressions in PHP.
Any guidance or suggestions would be greatly appreciated!
Thanks in advance!