Re: how to strip empty lines out of a txt using preg_replace()

this works $dtd = preg_replace( "/\n+/", "\n", $dtd); "Martin Scotta" <martinscotta@gmail.com> wrote in message news:6445d94e0909040653i44716f79m972f1105559901a@mail.gmail.com... > On Fri, Sep 4, 2009 at 10:37 AM, Ralph Deffke <ralph_deffke@yahoo.de> wrote: > > > the problem is some have got \t\n > > some are just \n\n....\n > > > > using PHP_EOL is a must > > > > I thing must be something with the /../sm attributes to the regex, spend > > like half an hour, but didn't get it, I'm running against a dead line, > > doesn't seem to be that easy if regex is not the everydays need u have > > > > > > "Ashley Sheridan" <ash@ashleysheridan.co.uk> wrote in message > > news:1252071327.24700.152.camel@localhost... > > > On Fri, 2009-09-04 at 15:28 +0200, Ralph Deffke wrote: > > > > ok > > > > preg_replace( "/^\s*$/m", "", $somestring) > > > > does not take empty lines out > > > > > > > > "Ashley Sheridan" <ash@ashleysheridan.co.uk> wrote in message > > > > news:1252069539.24700.150.camel@localhost... > > > > > On Fri, 2009-09-04 at 14:58 +0200, Ralph Deffke wrote: > > > > > > Hi all, I'm a bit under stress, maybe somebody knows the regex on a > > > > snap. > > > > > > using PHP_EOL would be great. > > > > > > > > > > > > thanks > > > > > > ralph_deffke@yahoo.de > > > > > > > > > > > > > > > > > > > > > > > The regex that would match a line containing only whitespace would > > look > > > > > like this: > > > > > > > > > > ^\s*$ > > > > > > > > > > Thanks, > > > > > Ash > > > > > http://www.ashleysheridan.co.uk > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Are the lines actually whitespace, or are they actually <br/> tags that > > > are inserting lines to format the page for HTML display? > > > > > > Thanks, > > > Ash > > > http://www.ashleysheridan.co.uk > > > > > > > > > > > > > > > > > -- > > PHP General Mailing List (http://www.php.net/) > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > The PHP_EOL is system dependent. If you want a solution that works on every > type of file you have to code it yourself. Here you have a function made > some time ago. > Maybe you can improve it. > > If you want the result as a text format you can implode( PHP_EOL, $buffer ) > Hope this helps you. > > function explode($code) > { > $lines = array(); > $buffer = ''; > > for($i=0, $len = strlen($code); $i<$len; ++$i) > switch( $code{$i} ) > { > case "\r": > case "\n": > if( $i+1 == $len ) > break 2; > > if( "\r" == ($next = $code{ $i+1 }) || "\n" == $next ) > { > ++$i; > } > > $lines[] = $buffer; > $buffer = ''; > break; > default: > $buffer .= $code{$i}; > } > > if( '' !== $buffer ); > $lines[] = $buffer; > > return $lines; > } > > > -- > Martin Scotta >