Re: Remove blank lines from a file

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On 5/22/2010 1:02 PM, Robert Cummings wrote:
tedd wrote:
At 4:27 PM +0200 5/21/10, Anton Heuschen wrote:
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

If that is all (i.e., removing double linefeeds), then this will do it:

$text_array = array();
$text_array = explode("\n\n", $input_text);
$output_text = implode("\n",$text_array);

Sorry tedd, this is broken. It doesn't solve problems with runs of
greater than 2 newlines which is even in the example :) I would use the
following instead which is also line break agnostic with final output in
the style for your system:

<?php

$data = preg_replace( "#[\r\n]+#", PHP_EOL, $input );

?>

Cheers,
Rob.

Rob: Your solution doesn't remove the blank lines [\r\n]+ use instead [\r\n]{2,} So 2 or more becomes only 1.

In general, problem is trickier when the following are considered. # means any number. 0, 1.....

some textEOL
#spacesEOL
more text

some text#spacesEOL
#spacesEOL
.... any number of these
#spacesEOL
more text

some textEOL
EOL
...any number of these
EOL
some text

The white space before the EOLs can also be tabs

Look at the solution I posted earlier. The trim() removes all the white spaces

--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php


[Index of Archives]     [PHP Home]     [Apache Users]     [PHP on Windows]     [Kernel Newbies]     [PHP Install]     [PHP Classes]     [Pear]     [Postgresql]     [Postgresql PHP]     [PHP on Windows]     [PHP Database Programming]     [PHP SOAP]

  Powered by Linux