Regex to strip phpdoc multiline comment

Question

I have this:

/**
 * @file
 * API for loading and interacting with modules.
 * More explaination here.
 *
 * @author  Reveller <me@localhost>
 * @version 19:05 28-12-2008
 */

I'm looking for a regex to strip all but the @token data, so the result would be:

@file API for loading and interacting with modules. More explaination here.
@author Reveller <me@localhost>
@version 19:05 28-12-2008

I now have this:

$text = preg_replace('/\r?\n *\* */', ' ', $text);

It does the job partially: it only removes the * in front of each line. Who could help me so it also strips /** and the final slash /? Any help would be greatly appreciated!

P.S: If, for instance, the commentlbock would contain something like

/**
 * @foo Here's some slashes for ya: / and \
 */

Then obviously the slashes after @foo may not be stripped. The reult would have to be:

@foo Here's some slashes for ya: / and \

I hope there's a regex guru out there :-)

Tim Pietzcker · Accepted Answer · 2010-05-01 11:12:33Z

4

Try

$result = preg_replace('%(\r?\n(?! \* ?@))?^(/\*\*\r?\n \* | \*/| \* ?)%m', ' ', $subject);

It will insert an extra space at the start of each line, so you might want to strip leading whitespace in a second step.

Explanation:

(\r?\n(?! \* ?@))?: If possible, match a newline unless it's followed by * @

^: Assert that the following match starts at the beginning of the line

(: Either match

/\*\*\r?\n \*: /**<newline> *

| or

\*/: */

|: or

\* ?: *, optionally followed by another space

): End of alternation sequence

edited May 1, 2010 at 11:12

answered May 1, 2010 at 11:02

Tim Pietzcker

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3 Comments

Pr0no Over a year ago

Wow, thanks! It works like a charm :-) Trimming whitespace is no problem.

Max Shawabkeh Over a year ago

@Reveller, if this solved your problem, you should mark the answer as accepted, and perhaps upvote it as well.

Pr0no Over a year ago

Done and done :-) Thanks for telling me. I'm new here and didn't know you could do that.

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