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Contextual Related Posts in WordPress

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June 8th, 2004
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Cool Scripts, WordPress Hack
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62
Responses

 

Comments

  1. Jonathan Greene (12 comments.) says:

    I see no sign of search_upgrade… where would I find it?

  2. Mark (58 comments.) says:

    Crap, it should be related_upgrade.php Sorry about that. Fixed.

  3. Jonathan Greene (12 comments.) says:

    Closer…

    now I am getting :

    Fatal error: Call to undefined function: related() in /usr/www/users/jgreene/wp/index.php on line 77

    which is where I pasted your line from the readme.

  4. Mark (58 comments.) says:

    Did you enable the plugin using the control panel?

  5. Jonathan Greene (12 comments.) says:

    yep – actually it was enabled when I checked. I disabled and re-enabled it

  6. Jonathan Greene (12 comments.) says:

    OK — all good … I had actually activated another plugin with a VERY similar name. works great!!

  7. Mark (34 comments.) says:

    Sure. Just replace the sql in the hack with this one:

    $sql = "SELECT ID,post_title,post_content,post_excerpt,post_date, MATCH(post_title,post_content) AGAINST ('".$stuff."') AS score FROM ".$table_prefix."posts WHERE MATCH (post_title,post_content) AGAINST ('".$stuff."') AND ID <> ".$post->ID." LIMIT 0,".$max_related;

    and add $post to the globals list at the beginning of the function.

  8. Prashant (2 comments.) says:

    Mark, There might be some error in the SQL syntax with that statement. I get an SQL syntax error.

  9. Prashant (2 comments.) says:

    Can this be setup to not display the name of the current post as the first in the list?

    Maybe if it could start the search at a post id before the current post, it could work.

  10. Mark (34 comments.) says:

    Prashant, This is what I have:

    global $wpdb, $table_prefix, $max_related, $post;
    $sql = "SELECT ID,post_title,post_content,post_excerpt,post_date, MATCH(post_title,post_content) AGAINST ('".$stuff."') AS score FROM
    ".$table_prefix."posts WHERE MATCH (post_title,post_content) AGAINST ('".$stuff."') AND ID <> ".$post->ID." LIMIT 0,".$max_related;

  11. Angsuman Chakraborty (6 comments.) says:

    The code looks identical to the related posts plugin. What am i missing here?
    You can find the related posts plugin working on my site – blog.taragana.com

  12. Billie (1 comments.) says:

    having no success. I’d previously installed another Related Posts plugin which wasn’t working. I just installed yours but am getting this error on my page:
    Warning: preg_match() expects parameter 2 to be string, array given in /home/menpaper/public_html/wp-content/themes/journalized-winter/index.php on line 25

  13. manuel (1 comments.) says:

    mate, where do i change/edit the position of the “related posts” to show up?
    because right now it sits between the “write a comment” field and the actual comments.
    i want it either on top of that or below. makes sense, or?

    i just cant figure out where to edit this…
    have a look on my site where they show up and you get the idea :)

    and of cause, thanks for this great working plugin! ;)

  14. hacker not cracker (2 comments.) says:

    I like your’s plugin so much better than the one you said was more robust!

  15. chris (1 comments.) says:

    The above SQL fetches *everything* from the database, including drafts, private posts and static pages. I have modified the statement to only fetch published posts. You could also modify the WHERE post_status = ‘publish’ part to fetch both published posts and static pages: WHERE post_status IN {‘publish’,’static’}.

    $sql = "SELECT ID, post_title, post_content, post_excerpt, post_date, post_status, MATCH(post_title,post_content) AGAINST ('".$stuff."') AS score FROM
    ".$table_prefix."posts WHERE post_status = 'publish' AND MATCH (post_title,post_content) AGAINST ('".$stuff."') AND ID ".$post->ID." LIMIT 0,".$max_related;

  16. Jane (1 comments.) says:

    This is a cool idea and I’m about to implement it on my blog (dating site review). I think it will help visitors find more relevant info on a blog so come back more often – a really good idea!

  17. Marco (1 comments.) says:

    Hi!
    I am trying to set up this plugin but this is the message I get just after clicking on “Activate”: Warning: Cannot modify header information – headers already sent by (output started at /home/bianchim/public_html/wp-content/plugins/related.php:72) in /home/bianchim/public_html/wp-includes/pluggable-functions.php on line 269
    Afterall the plugin seems to work anyway, but then I cannot modify meta tags of new posts anymore.
    What’s wrong?

  18. rupi says:

    Warning: mysql_connect() [function.mysql-connect]: Access denied for user ‘nobody’@’localhost’ (using password: NO) in /home/siteusrname/public_html/portal/related_upgrade.php on line 7
    Can’t connect to the database

    wht i fo now!!!

  19. shane (2 comments.) says:

    I have the same problem..

  20. Ash Haque (1 comments.) says:

    I get this errror:

    Warning: main(wp-config.php) [function.main]: failed to open stream: No such file or directory in /home/sitename/public_html/directory/wp-content/plugins/related_upgrade.php on line 3

    Warning: main(wp-config.php) [function.main]: failed to open stream: No such file or directory in /home/sitename/public_html/directory/wp-content/plugins/related_upgrade.php on line 3

    Fatal error: main() [function.require]: Failed opening required ‘wp-config.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/sitename/public_html/directory/wp-content/plugins/related_upgrade.php on line 3

  21. Matt (1 comments.) says:

    We are getting the same error as #28. Any idea how to fix?

  22. Red Leader (1 comments.) says:

    I get the following error message after placing the sliver of code into my page. line 41 is the line where the code is entered. any advice?

    Warning: preg_match() expects parameter 2 to be string, array given in /home/heavytex/public_html/wp-content/themes/Heavytext/index.php on line 41

  23. Sojan (1 comments.) says:

    I install this pluggin and it is fine, but it had a problem, it shows perfectly when i logined. But when i logout it not shows. I check and try many times, related posts shows only when i login to my site. Please help me to correct this problem.

  24. hylton (1 comments.) says:

    Same issue as #32. Anyone have answers?

  25. Diego (1 comments.) says:

    hi, im getting this error:
    Warning: preg_match() expects parameter 2 to be string, array given in /home/content/d/i/e/diego018/html/wp-content/themes/sodelicious-black-10/single.php on line 49

    i need help! i really need this plugin!

  26. Ryan Ward (3 comments.) says:

    I’m getting this error:

    Warning: mysql_connect() [function.mysql-connect]: Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (2) in /homepages/8/d196824117/htdocs/wordpress-testblog/related_upgrade.php on line 7
    Can’t connect to the database

    Any fix for this?

    Thanks,

  27. Mark Ghosh (386 comments.) says:

    Ryan:
    In related_upgrade.php, Change
    $connexion = mysql_connect($server,$loginsql,$passsql) or die(“Can’t connect to the database
    “.mysql_error());
    To
    $connexion = mysql_connect(DB_HOST,DB_USER,DB_PASSWORD) or die(“Can’t connect to the database
    “.mysql_error());

    Hope that helps

  28. Ryan Ward (3 comments.) says:

    Mark,

    Thank you, it helped, but, now I am getting this:

    Parse error: parse error, unexpected T_STRING in /homepages/8/d196824117/htdocs/wordpress-testblog/related_upgrade.php on line 7

    This is all prior to activating the plugin, correct?

  29. Ryan Ward (3 comments.) says:

    Actually, I changed the quotes and now it says “No Database Selected”.

    I then added DB_NAME and then I got another error and have removed it back to what your change was and it says “No database Selected”

    Any other suggestions…

  30. sir jorge (4 comments.) says:

    This plugin failed, tried everything i knew.

    Followed your instructions.

    It didn’t work.

  31. Sherif Elsisi (2 comments.) says:

    Hi
    I am getting hi, im getting this error:
    Warning: preg_match() expects parameter 2 to be string, array given …
    A couple people already wrote about it. Could it be bcs of the version number ?
    Thanks for the plugin.

  32. Jack (1 comments.) says:

    Hi, I followed your directions in comment 44 and now I’m getting the “No Database Selected” error like Ryan in comment 46.

    Can you help me?

    Thanks!

  33. Megos (1 comments.) says:

    Warning: preg_match() expects parameter 2 to be string, array given in //wp-content/themes/smashingtheme/index.php on line 32

    Anybody fixed this?

  34. Ben (1 comments.) says:

    thanks. I think I’ll just use the widget you use… it looks pretty easy. Doclix has a similar thing… it links certain relevant words on your page. I use it, it is cool. You or anyone who reads this post who blogs should check it out.

  35. MauiDan (2 comments.) says:

    Using echo mysql_error(); I was able to see the “something is amiss” error is:


    Something is amiss, please check instructions again.
    The used table type doesn't support FULLTEXT indexes

    Any ideas?

  36. MauiDan (2 comments.) says:

    I’ve fixed the problem by altering the table type to MYISAM. Here is the complete code to do this:


    /* Don't remove this line. */
    require('wp-config.php');

    global $table_prefix;

    $connexion = mysql_connect(DB_HOST,DB_USER,DB_PASSWORD) or die("Can’t connect to the database".mysql_error());

    $dbconnexion = mysql_select_db(DB_NAME, $connexion);

    if (!$dbconnexion) {
    echo mysql_error();
    die();
    }

    $sql = "ALTER TABLE ".$table_prefix."posts ENGINE = MYISAM";
    $result = mysql_query($sql);

    if ($result) {
    echo "Alter table type successful...";

    } else {
    echo mysql_error();
    }

    $sql = "ALTER TABLE ".$table_prefix."posts ADD FULLTEXT(post_content,post_title)";
    $result = mysql_query($sql);

    if ($result) {
    echo "Alter table index successful, please proceed with instructions";
    } else {
    echo mysql_error();

    }

  37. muhibbuddin (1 comments.) says:

    i got fatal error . bla bla bla. but i unsintall it. and my blog was clean now :)

  38. Web Development (1 comments.) says:

    Even i’m getting the fatal error thing!! :(
    So i’m using the other related posts plugin now!
    Can anyone help me fixing this?

  39. Chuck (1 comments.) says:

    Is there an updated version of this plugin? I’m running WP version 2.5.1

  40. uncleboob (2 comments.) says:

    Here are some changes I made to the related_upgrade.php
    —-
    <?php
    /* Don’t remove this line. */
    require(‘wp-config.php’);

    global $table_prefix;

    $connexion = mysql_connect(DB_HOST,DB_USER,DB_PASSWORD) or die(“Can’t connect to the database”.mysql_error());
    $dbconnexion = mysql_select_db(DB_NAME, $connexion);

    if (!$dbconnexion) {
    echo mysql_error();
    die();
    }

    $sql = “ALTER TABLE “.$table_prefix.”posts ADD FULLTEXT(post_content,post_title)”;
    $result = mysql_query($sql);

    if ($result)
    echo “Alter table successful, please proceed with instructions”;

    else
    echo “Something is amiss, please check instructions again.”;

    This one will work with WordPress 2.6.3 and hopefully above.

    Greetings



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