PHP to search within txt file and echo the whole line

user_376543 0
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Using php, I'm trying to create a script which will search within a text file and grab that entire line and echo it.

I have a text file (.txt) titled "numorder.txt" and within that text file, there are several lines of data, with new lines coming in every 5 minutes (using cron job). The data looks similar to:

2 aullah1
7 name
12 username

How would I go about creating a php script which will search for the data "aullah1" and then grab the entire line and echo it? (Once echoed, it should display "2 aullah1" (without quotations).

If I didn't explain anything clearly and/or you'd like me to explain in more detail, please comment.

text-files echo search php
7 Answers

Slightly modified approach of the Upvoted answer to support multiple directories and variable keywords through a GET variable (if you wish to do it that way)

if (isset($_GET["keyword"])){

   foreach(glob('*.php') as $file) { 

      $searchfor = $_GET["keyword"];
      
      // the following line prevents the browser from parsing this as HTML.
      header('Content-Type: text/plain');
      
      // get the file contents, assuming the file to be readable (and exist)
      $contents = file_get_contents($file);
      // escape special characters in the query
      $pattern = preg_quote($searchfor, '/');
      // finalise the regular expression, matching the whole line
      $pattern = "/^.*$pattern.*\$/m";
      // search, and store all matching occurences in $matches
      if(preg_match_all($pattern, $contents, $matches)){
         echo "Found matches:\n";
         echo $file. "\n";
         echo implode("\n", $matches[0]);
         echo "\n\n";
      }
      else{
      //  echo "No matches found";
      }
   }
}
user_26093560
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