RE: [PHP] Re: Spaces Not Detected from Regular Expression preg_match

> To: php-general@lists.php.net > Date: Wed, 25 Feb 2009 14:42:36 -0600 > From: nospam@mckenzies.net > Subject: [PHP] Re: Spaces Not Detected from Regular Expression preg_match > > Shawn McKenzie wrote: > > Shawn McKenzie wrote: > >> Alice Wei wrote: > >>> Hi, > >>> > >>> I have a code as in the following: > >>> > >>> <?php > >>> > >>> $file = "test.txt"; > >>> $fp = fopen($file, "r"); > >>> > >>> while(!feof($fp)) { > >>> $data = fgets($fp, 1024); > >>> > >>> if ((preg_match("/0/",$data)) || > >>> (preg_match("/\"\s\"/",$data)) || > >>> (preg_match("/\"\s\"/",$data))) { > >>> //Don't do a thing > >>> } > >>> > >>> } > >>> fclose($fp); > >>> > >>> ?> > >>> > >>> > >>> This is the input file: > >>> > >>> 1 > >>> 23kd > >>> 3dkd2 > >>> " " > >>> 4 > >>> 5 > >>> 6 > >>> > >>> For the output, I get nothing running it from the command prompt, but I would like > >>> to have " " in the output, > >>> could anyone please give me some guides on what I have done wrong in my regular > >>> expression? > >>> > >>> Thanks for your help. > >>> > >>> Alice > >>> > >>> > >>> > >>> > >>> > >>> > >>> _________________________________________________________________ > >>> Search from any Web page with powerful protection. Get the FREE Windows Live > >>> Toolbar Today! > >>> http://get.live.com/toolbar/overview > >> Ummm... #1 you haven't "output" anything in your code. Your code > >> says, > >> if " " is found in $data, then "Don't do a thing". > >> > >> > >> > > > > So if your wanting to see if there is a match in the line and return the > > match (which in this example seems pointless because you know that you > > are matching ""), then something like this: > > > > if (preg_match("/0/",$data, $matches) || > > preg_match("/\"\s\"/",$data, $matches)) > > { > > print_r($matches); > > } > > > > BTW, the second and third conditions in your if appeared to be the same, > > also \s matches whitespace, spaces, tabs, returns, etc... > > > > I'll wait for a reply with more information as the more I look at your > code it seems your off on a strange track. I don't know the variability > of your input data, but if you had a line 0 " " then the first > preg_match would match the 0 and not the " ". Maybe that's what you > want, dunno... Thanks, but I found that using line numbers of each and its remainder by a certain number works etter than using regular expressions here, since there is a lot of variability in the data from line to line. Alice > -- > Thanks! > -Shawn > http://www.spidean.com > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > _________________________________________________________________ Express yourself with gadgets on Windows Live Spaces http://discoverspaces.live.com?source=hmtag1&loc=us