Re: Remove blank lines from a file

On 5/21/2010 8:03 AM, Anton Heuschen wrote:

Hi Im trying do something like this, have a function which uploads my file and returns file pointer ... but at same time ... I want to remove all Blank lines in a file and update it before it goes to the final location ... What I tried was to do a write of file and use some regexp replace to remove a blank ... either I am not doing the replace correct or my understanding of the file buffer and what I can do with it between the browser and saving is not correct, Anyway my code looks something like this :

  $uploadfile     = $this->uploaddir;
             $mtran          = mt_rand(999,999999);
             $NewName        = date("Ymd_Gis").$mtran.".csv";
             $uploadfile     = $uploadfile.$NewName;

             try{
                 if

(move_uploaded_file($_FILES['attachfile']['tmp_name'], $uploadfile))

                 {
                     $handle = fopen($uploadfile, "r+");
                     $lines  = file($uploadfile,

FILE_SKIP_EMPTY_LINES); //FILE_IGNORE_NEW_LINES |

                     foreach ($lines as $line_num =>  $line) {
                         $line =

preg_replace("/(^[\r\n]*|[\r\n]+)[\s\t]*[\r\n]+/", "", $line);

                         if(strlen($line)>  0)
                             $line=trim($line);
                             $line=$line."\n";
                             fwrite($handle, $line);
                     }
                     fclose($handle);

Suggest using file() which does must of the work for you. Then use foreach() to scan for empty lines. Recreate the array Here is a quickie, not tested. Don't know what is the end of line on empties. So you need to adjust as needed. $orgArray= file(path); foreach($org as $line){

    $tl=trim($line);
    if(empty($tl)) continue;
    $newArray[]=$line;

} file_put_contents($filename, $newArray);