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Plugging Commenters in Greymatter using php

For this to work, you will need to rename all your .html files to .php, unless you have already done so :)

1. Paste this code into your 'Main Index' template:

<?php 
// get a list of all the people that commented on your last open post. 
// version 0.5 
// copyright 2003-2004 Robert Mills 
// http://flippedcracker.net/

// this is the core function that actually displays the plugs. 
function plugs($previous_entry_number) 
{ 
// path to your archives directory. i recommend relative paths (like the ones supplied). 
$archives_dir = "./archives"; 
// do not change this. 
$cgi_ext = "cgi"; 
// check for an open entry we can use. 
$good_entry_number = is_open_entry($previous_entry_number); 
// pad the good entry number 
$padded_good_entry_number = str_pad($good_entry_number, 8, "0", STR_PAD_LEFT); 
// open the good entry file 
if(file_exists("$archives_dir/$padded_good_entry_number.$cgi_ext")) 
{ 
  $entry_file = file("$archives_dir/$padded_good_entry_number.$cgi_ext"); 
// count the number of lines in the file 
$number = count($entry_file); 
// reverse the entry file array and then remove the top 4 lines (which is the entry itself). 
if($number > 4) 
{ 
  $new_array = array_reverse($entry_file); 
  // get rid of the first 4 lines (entry information). 
  $one = array_pop($new_array); 
  $two = array_pop($new_array); 
  $three = array_pop($new_array); 
  $four = array_pop($new_array); 
  // reverse the entry again to get the original order. 
  $new_array = array_reverse($new_array); 
  // put all the commenters into an array, take out commenters that didn't leave a url. 
  $array_count = count($new_array); 
  if($array_count > 0) 
  { 
    foreach($new_array as $value) 
    { 
      $new_line = explode("|", $value); 
      if($new_line[3] != "") 
        $unique_array[] = "$new_line[0]|$new_line[3]"; 
    } 
    $unique_array_count = count($unique_array); 
    if($unique_array_count > 0) 
    { 
      // remove any duplicates. 
      $unique_array = array_unique($unique_array); 
      // you can comment the sorting out if you would like to have the list in the same order as people commented. 
      sort($unique_array); 
      // start the count each plug 
      $count = 0; 
      // this goes before the list of commenters. 
      echo "plugs: "; 
      foreach($unique_array as $value) 
      { 
        $lines = explode("|",$value); 
        // this is so you can have a separator after each plug (like a comma) without having any extras. 
        // the separator actually goes at the beginning of each plug instead of the end. 
        if($count == 0) 
        { 
          // if it's the first plug, don't add a separator 
          $separator = ""; 
        } 
        else 
        { 
          // otherwise, add the separator 
          $separator = ","; 
        } 
        // this would be the line to change if you want it displayed differently (or if you wanted to add styles to it 
        // for example, you can make the links part of a certain class... 
        // echo "<a href=\"$lines[1]\" class=\"commenters\">$lines[0]</a>"; 
        // use < and > to make the < > show up in the browser window. 
        echo "$separator <a href=\"$lines[1]\">$lines[0]</a>"; 
         
        // increase plug count 
        $count++; 
      } 
    } 
  } 
  else 
    die; 
}

} 
// tell us if it can't open the entry .cgi file. 
else 
  echo ("<strong>plugs hack : entry file could not be opened. please check your path.</strong>"); 
}

// this function checks for open and closed entries 
// so that the hack will now skip over closed entries. 
function is_open_entry($entry_number) 
{ 
  if($entry_number > 0) 
  { 
    // path to your archives directory. i recommend relative paths (like the ones supplied). 
    $archives_dir = "./archives"; 
    // do not change this. 
    $cgi_ext = "cgi"; 
    // pad the entrynumber. 
    $padded_entry_number = str_pad($entry_number, 8, "0", STR_PAD_LEFT); 
    // open the entry .cgi file. 
    $entry_file = file("$archives_dir/$padded_entry_number.$cgi_ext"); 
    // pull the info out of the top line 
    $top_line = explode("|", $entry_file[0]); 
    // see if the entry is open or not 
    if($top_line[16] == "open") 
    { 
      $good_entry_number = $top_line[0]; 
      // if it's open, give us the entry number. 
      return $good_entry_number; 
    } 
    else 
    { 
      $entry_number--; 
      // since it's not open, start over with the next entry. 
      is_open_entry($entry_number); 
    } 
  } 
}

?> 
</style>

2. You may have to change the archives path, which is located twice in the code - $archives_dir = "./archives"; - to your actual filepath. But try it without changing it first if you aren't sure :)
3. Now copy this code:

<?=plugs({{previousentrynumber}})?">

4. Now paste it into the 'Standard Entries' and 'Extended Entries' templates which can be found under the 'Index Entry Template', where you want your commenters to be plugged.

If this tutorial helped you, please link me on your site.

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