vb.org Archive

vb.org Archive (https://vborg.vbsupport.ru/index.php)
-   vB3 General Discussions (https://vborg.vbsupport.ru/forumdisplay.php?f=111)
-   -   Would this php code work to delete all orphaned attachments? (https://vborg.vbsupport.ru/showthread.php?t=52028)

willms_jay 04-23-2003 09:08 PM
Would this php code work to delete all orphaned attachments?
 
Would this php code work to delete all orphaned attachments? (eg. attachments who don't have a post that actually useses them? (don't ask why... seems like one of the hacks i installed keep the attachments from getting deleted if a thread gets deleted.

PHP Code:
<?
        echo "Jordan's fix the attachment table php script!<br><br>";
 $connection = mysql_connect("localhost", "sampleci_jordan", "****");
 if (!$connection) {
   echo "<p> An error occured while trying to access the database, please notify the webmaster for a quick solution.</p><br>";
   echo mysql_errno().": ".mysql_error()."<br>";
   exit();
 }

 $query = "SELECT attachmentid from attachment";
 $result = mysql_db_query("sampleci_samplecitynet", $query);
 if ($result) {
  $numOfRows = mysql_num_rows ($result);
                echo "Found " . $numOfRows . " attachments..<Br>";
  for ($i = 0; $i < $numOfRows; $i++){

   $attachmentid[$i] = mysql_result ($result, $i, "attachmentid");
  } // end for 
 } // end if

 echo "Checking to see if posts have these and then generating a list of those that don't<br><Br>";
 for ($i = 0; $i < count($attachmentid); $i++){
   $query = "SELECT attachmentid, postid FROM post WHERE attachmentid = " . $attachmentid[$i];
  $result = mysql_db_query("sampleci_samplecitynet", $query);
 
  if ($result) {
   // keepe the attachment
   $numOfRows = mysql_num_rows ($result);
   echo " Attachment id : " . $attachmentid[$i] . "<br>";
   if ($numOfRows == 0) {
                                // delete the attachment here!
    echo "Reject!<br>";
   }
   else {
    // don't do anything at all!
    echo "Keep!<br>";
   
   }
 
  } // end if
  else {
   // Delete the attachment!
   echo "No result set!";
  }
 } // end for
 

?>
what do you think? Is my logic correct?

..jordan

filburt1 04-23-2003 09:15 PM
[sql]
SELECT a.attachmentid FROM attachment a
LEFT JOIN post p ON a.attachmentid = p.attachmentid
WHERE p.attachmentid IS NULL;
[/sql]
Theoretically that query will work but it will take an insanely long time to execute (50 sec on my machine).


All times are GMT. The time now is 01:40 AM.

Powered by vBulletin® Version 3.8.12 by vBS
Copyright ©2000 - 2025, vBulletin Solutions Inc.

X vBulletin 3.8.12 by vBS Debug Information
  • Page Generation 0.01026 seconds
  • Memory Usage 1,717KB
  • Queries Executed 10 (?)
More Information
Template Usage:
  • (1)ad_footer_end
  • (1)ad_footer_start
  • (1)ad_header_end
  • (1)ad_header_logo
  • (1)ad_navbar_below
  • (1)bbcode_php_printable
  • (1)footer
  • (1)gobutton
  • (1)header
  • (1)headinclude
  • (6)option
  • (1)post_thanks_navbar_search
  • (1)printthread
  • (2)printthreadbit
  • (1)spacer_close
  • (1)spacer_open 
Phrase Groups Available:
  • global
  • postbit
  • showthread
Included Files:
  • ./printthread.php
  • ./global.php
  • ./includes/init.php
  • ./includes/class_core.php
  • ./includes/config.php
  • ./includes/functions.php
  • ./includes/class_hook.php
  • ./includes/modsystem_functions.php
  • ./includes/class_bbcode_alt.php
  • ./includes/class_bbcode.php
  • ./includes/functions_bigthree.php 
Hooks Called:
  • init_startup
  • init_startup_session_setup_start
  • init_startup_session_setup_complete
  • cache_permissions
  • fetch_threadinfo_query
  • fetch_threadinfo
  • fetch_foruminfo
  • style_fetch
  • cache_templates
  • global_start
  • parse_templates
  • global_setup_complete
  • printthread_start
  • bbcode_fetch_tags
  • bbcode_create
  • bbcode_parse_start
  • bbcode_parse_complete_precache
  • bbcode_parse_complete
  • printthread_post
  • printthread_complete