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- Posted on
January 31, 2006, 8:41 pm
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In regex, ^ and $ shoudl match start/end of a line when the 'm' /multiline
modifier is set -- however I just spent the better part of the day trying
to figure out why it wasn't working as expected. I used the query
...and the text
Only the last instance of test would match -- that is expected without the
multiline flag. ( http://tinyurl.com/dx86w ) however they should each
match with the multiline flag so long as there's no additional whitespace
after the fact ( http://tinyurl.com/7bap6 ).
Finally, out of ideas, I replaced \r\n with \n on all of my _POST data --
and presto, it worked. So, my question is -- why won't it work on data
with windows line endings? Is there a built in function for changing the
line ending style or something? It seems there should be a more elegant
solution than running a find/replace on all of my user-input just to make
sure the line ending style are liked by PCRE.
Re: regex multiline modifier and windows line endings
Allen, I've never encountered such problem because I normally
clean up all "\r" characters, whenever I encounter them,
but there is a parameter "auto_detect_line_endings" in your php.ini
which is normally set to "Off".