Re: Remove blank lines from a file

Robert Cummings wrote:

Nathan Rixham wrote:

Robert Cummings wrote:

You may want to start testing your solutions. None have worked yet. Not even close :)

filed under 'works for me' <?php $input = 'blah b asd as d asd a sd da asd d asd

    da';

echo preg_replace( "/(\s)\s+/im", '\\1', $input ); on PHP/5.2.8 produces: blah b asd as d asd a sd da asd d asd da unless I'm completely missing the elephant in the room here!

Doesn't appear to work on the following: $input = ' 1 2 3 4 5 6'; Additionally, your solution modifies lines that weren't asked to be modified :) I realize it potentially makes for a more succinct solution (if you ever get it to work properly in the general case) but it is not a valid solution for the requested functionality-- The OP did not ask for trimming of lines with content ;)

quote: So in the file it would look like (from the original file the user uploads that is) 1 2 3 4 5 6 but when the file is saved to the server it must look like 1 2 3 4 5 6 </quote> the above produces what's required; and hence the vertical whitespace only solution included too "/(\h)\h+/im" what version are you on btw? not being an ass and actually am interested in where it doesn't work (as I use the code on some important sites & in some apps that are open sourced)

I think I see an issue... either my client, your client, both, or the PHP list is trimming email lines. I have spaces at the end of some of the lines in my example. Let's see if a text file attachment works for this. FYI my command-line is currently running 5.2.11

Yes it was client stripping out extra whitespace! thanks Rob, replicated your results: 1 2 3 4 5 6 and then 'fixed' to give what's needed: preg_replace( "/(((\r|)\n)(\h*|))+/im", '\\1' , $input ); the above keeps line termination the same as in the source file; can you give it a quick check your side to ensure it works (if you don't mind)? modified one that 'cleans' the new lines: preg_replace( "/((\r|)\n(\h*|))+/im", PHP_EOL , $input ); Best, Nathan