Spaces Not Detected from Regular Expression preg_match

[Alice Wei <ajwei@xxxxxxxxxxxxx>]

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






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