blog/lib.php

   1 <?php //$Id$
   2
   3     /**
   4      * Library of functions and constants for blog
   5      */
   6     require_once($CFG->libdir .'/blocklib.php');
   7     require_once($CFG->libdir .'/pagelib.php');
   8     require_once($CFG->dirroot .'/blog/rsslib.php');
   9     require_once($CFG->dirroot .'/blog/blogpage.php');
  10     include_once($CFG->dirroot.'/tag/lib.php');
  11
  12     /**
  13      * Definition of blogcourse page type (blog page with course id present).
  14      */
  15     //not used at the moment, and may not need to be
  16     define('PAGE_BLOG_COURSE_VIEW', 'blog_course-view');
  17
  18
  19     /**
  20      * Checks to see if user has visited blogpages before, if not, install 2
  21      * default blocks (blog_menu and blog_tags).
  22      */
  23     function blog_check_and_install_blocks() {
  24         global $USER;
  25         if (isloggedin() && !isguest()) {
  26             // if this user has not visited this page before
  27             if (!get_user_preferences('blogpagesize')) {
  28                 // find the correct ids for blog_menu and blog_from blocks
  29                 $menublock = get_record('block','name','blog_menu');
  30                 $tagsblock = get_record('block','name','blog_tags');
  31                 // add those 2 into block_instance page
  32
  33                 // add blog_menu block
  34                 $newblock = new object();
  35                 $newblock->blockid  = $menublock->id;
  36                 $newblock->pageid   = $USER->id;
  37                 $newblock->pagetype = 'blog-view';
  38                 $newblock->position = 'r';
  39                 $newblock->weight   = 0;
  40                 $newblock->visible  = 1;
  41                 insert_record('block_instance', $newblock);
  42
  43                 // add blog_tags menu
  44                 $newblock -> blockid = $tagsblock->id;
  45                 $newblock -> weight  = 1;
  46                 insert_record('block_instance', $newblock);
  47
  48                 // finally we set the page size pref
  49                 set_user_preference('blogpagesize', 10);
  50             }
  51         }
  52     }
  53
  54
  55     /**
  56      * Adaptation of isediting in moodlelib.php for blog module
  57      * @return bool
  58      */
  59     function blog_isediting() {
  60         global $SESSION;
  61
  62         return !empty($SESSION->blog_editing_enabled);
  63     }
  64
  65
  66     /**
  67      *  This function is in lib and not in BlogInfo because entries being searched
  68      *   might be found in any number of blogs rather than just one.
  69      *
  70      *   $@param ...
  71      */
  72     function blog_print_html_formatted_entries($postid, $filtertype, $filterselect, $tagid, $tag) {
  73
  74         global $CFG, $USER;
  75
  76         $blogpage  = optional_param('blogpage', 0, PARAM_INT);
  77         $bloglimit = optional_param('limit', get_user_preferences('blogpagesize', 10), PARAM_INT);
  78         $start     = $blogpage * $bloglimit;
  79
  80         $sitecontext = get_context_instance(CONTEXT_SYSTEM, SITEID);
  81
  82         $morelink = '<br />&nbsp;&nbsp;';
  83
  84         $totalentries = get_viewable_entry_count($postid, $bloglimit, $start, $filtertype, $filterselect, $tagid, $tag, $sort='lastmodified DESC');
  85         $blogEntries = fetch_entries($postid, $bloglimit, $start, $filtertype, $filterselect, $tagid, $tag, $sort='lastmodified DESC', true);
  86
  87         print_paging_bar($totalentries, $blogpage, $bloglimit, get_baseurl($filtertype, $filterselect), 'blogpage');
  88
  89         if ($CFG->enablerssfeeds) {
  90             blog_rss_print_link($filtertype, $filterselect, $tag);
  91         }
  92
  93         if (has_capability('moodle/blog:create', $sitecontext)) {
  94             //the user's blog is enabled and they are viewing their own blog
  95             $addlink = '<div class="addbloglink">';
  96             $addlink .= '<a href="'.$CFG->wwwroot .'/blog/edit.php?action=add'.'">'. get_string('addnewentry', 'blog').'</a>';
  97             $addlink .= '</div>';
  98             echo $addlink;
  99         }
 100
 101         if ($blogEntries) {
 102
 103             $count = 0;
 104             foreach ($blogEntries as $blogEntry) {
 105                 blog_print_entry($blogEntry, 'list', $filtertype, $filterselect); //print this entry.
 106                 $count++;
 107             }
 108
 109             print_paging_bar($totalentries, $blogpage, $bloglimit, get_baseurl($filtertype, $filterselect), 'blogpage');
 110
 111             if (!$count) {
 112                 print '<br /><div style="text-align:center">'. get_string('noentriesyet', 'blog') .'</div><br />';
 113
 114             }
 115
 116             print $morelink.'<br />'."\n";
 117             return;
 118         }
 119
 120         $output = '<br /><div style="text-align:center">'. get_string('noentriesyet', 'blog') .'</div><br />';
 121
 122         print $output;
 123
 124     }
 125
 126
 127     /**
 128      * This function is in lib and not in BlogInfo because entries being searched
 129      * might be found in any number of blogs rather than just one.
 130      *
 131      * This function builds an array which can be used by the included
 132      * template file, making predefined and nicely formatted variables available
 133      * to the template. Template creators will not need to become intimate
 134      * with the internal objects and vars of moodle blog nor will they need to worry
 135      * about properly formatting their data
 136      *
 137      *   @param BlogEntry blogEntry - a hopefully fully populated BlogEntry object
 138      *   @param string viewtype Default is 'full'. If 'full' then display this blog entry
 139      *     in its complete form (eg. archive page). If anything other than 'full'
 140      *     display the entry in its abbreviated format (eg. index page)
 141      */
 142     function blog_print_entry($blogEntry, $viewtype='full', $filtertype='', $filterselect='', $mode='loud') {
 143
 144         global $USER, $CFG, $COURSE, $ME;
 145
 146         $template['body'] = format_text($blogEntry->summary, $blogEntry->format);
 147         //$template['title'] = '<a name="'. $blogEntry->subject .'"></a>';
 148         //enclose the title in nolink tags so that moodle formatting doesn't autolink the text
 149         $template['title'] = '<span class="nolink">'.$blogEntry->subject.'</span>';
 150         $template['userid'] = $blogEntry->userid;
 151         $template['author'] = fullname(get_record('user','id',$blogEntry->userid));
 152         $template['lastmod'] = userdate($blogEntry->lastmodified);
 153         $template['created'] = userdate($blogEntry->created);
 154         $template['publishstate'] = $blogEntry->publishstate;
 155
 156         /// preventing user to browse blogs that they aren't supposed to see
 157         /// This might not be too good since there are multiple calls per page
 158
 159         /*
 160         if (!blog_user_can_view_user_post($template['userid'])) {
 161             error ('you can not view this post');
 162         }*/
 163
 164         $stredit = get_string('edit');
 165         $strdelete = get_string('delete');
 166
 167         $user = get_record('user','id',$template['userid']);
 168
 169         /// Start printing of the blog
 170
 171         echo '<table cellspacing="0" class="forumpost blogpost blog'.$template['publishstate'].'" width="100%">';
 172
 173         echo '<tr class="header"><td class="picture left">';
 174         print_user_picture($template['userid'], SITEID, $user->picture);
 175         echo '</td>';
 176
 177         echo '<td class="topic starter"><div class="subject">'.$template['title'].'</div><div class="author">';
 178         $fullname = fullname($user, $template['userid']);
 179         $by = new object();
 180         $by->name =  '<a href="'.$CFG->wwwroot.'/user/view.php?id='.
 181                     $user->id.'&amp;course='.$COURSE->id.'">'.$fullname.'</a>';
 182         $by->date = $template['lastmod'];
 183         print_string('bynameondate', 'forum', $by);
 184         echo '</div></td></tr>';
 185
 186         echo '<tr><td class="left side">';
 187
 188     /// Actual content
 189
 190         echo '</td><td class="content">'."\n";
 191
 192         if ($blogEntry->attachment) {
 193             echo '<div class="attachments">';
 194             $attachedimages = blog_print_attachments($blogEntry);
 195             echo '</div>';
 196         } else {
 197             $attachedimages = '';
 198         }
 199
 200         switch ($template['publishstate']) {
 201             case 'draft':
 202                 $blogtype = get_string('publishtonoone', 'blog');
 203             break;
 204             case 'site':
 205                 $blogtype = get_string('publishtosite', 'blog');
 206             break;
 207             case 'public':
 208                 $blogtype = get_string('publishtoworld', 'blog');
 209             break;
 210             default:
 211                 $blogtype = '';
 212             break;
 213
 214         }
 215
 216         echo '<div class="audience">'.$blogtype.'</div>';
 217
 218         // Print whole message
 219         echo format_text($template['body']);
 220
 221         /// Print attachments
 222         echo $attachedimages;
 223     /// Links to tags
 224
 225         /*
 226         if ($blogtags = get_records_sql('SELECT t.* FROM '.$CFG->prefix.'tags t, '.$CFG->prefix.'blog_tag_instance ti
 227                                      WHERE t.id = ti.tagid
 228                                      AND ti.entryid = '.$blogEntry->id)) {
 229         */
 230         if ($blogtags = get_item_tags('blog', $blogEntry->id)) {
 231             echo '<div class="tags">';
 232             if ($blogtags) {
 233                 print_string('tags');
 234                 echo ': ';
 235                 foreach ($blogtags as $key => $blogtag) {
 236                     $taglist[] = '<a href="index.php?filtertype='.$filtertype.'&amp;filterselect='.$filterselect.'&amp;tagid='.$blogtag->id.'">'.tag_display_name($blogtag).'</a>';
 237                 }
 238                 echo implode(', ', $taglist);
 239             }
 240             echo '</div>';
 241         }
 242
 243     /// Commands
 244
 245         echo '<div class="commands">';
 246
 247         if (blog_user_can_edit_post($blogEntry)) {
 248             echo '<a href="'.$CFG->wwwroot.'/blog/edit.php?action=edit&amp;id='.$blogEntry->id.'">'.$stredit.'</a>';
 249             echo '| <a href="'.$CFG->wwwroot.'/blog/edit.php?action=delete&amp;id='.$blogEntry->id.'">'.$strdelete.'</a>';
 250         }
 251
 252         echo '</div>';
 253
 254         echo '</td></tr></table>'."\n\n";
 255
 256     }
 257
 258     function blog_file_area_name($blogentry) {
 259     //  Creates a directory file name, suitable for make_upload_directory()
 260         global $CFG;
 261         // $CFG->dataroot/blog/attachments/xxxx/file.jpg
 262         return "blog/attachments/$blogentry->id";
 263     }
 264
 265     function blog_file_area($blogentry) {
 266         return make_upload_directory( blog_file_area_name($blogentry) );
 267     }
 268
 269     function blog_delete_old_attachments($post, $exception="") {
 270     // Deletes all the user files in the attachments area for a post
 271     // EXCEPT for any file named $exception
 272
 273         if ($basedir = blog_file_area($post)) {
 274             if ($files = get_directory_list($basedir)) {
 275                 foreach ($files as $file) {
 276                     if ($file != $exception) {
 277                         unlink("$basedir/$file");
 278                         notify("Existing file '$file' has been deleted!");
 279                     }
 280                 }
 281             }
 282             if (!$exception) {  // Delete directory as well, if empty
 283                 rmdir("$basedir");
 284             }
 285         }
 286     }
 287
 288     function blog_print_attachments($blogentry, $return=NULL) {
 289     // if return=html, then return a html string.
 290     // if return=text, then return a text-only string.
 291     // otherwise, print HTML for non-images, and return image HTML
 292
 293         global $CFG;
 294
 295         $filearea = blog_file_area_name($blogentry);
 296
 297         $imagereturn = "";
 298         $output = "";
 299
 300         if ($basedir = blog_file_area($blogentry)) {
 301             if ($files = get_directory_list($basedir)) {
 302                 $strattachment = get_string("attachment", "forum");
 303                 foreach ($files as $file) {
 304                     include_once($CFG->libdir.'/filelib.php');
 305                     $icon = mimeinfo("icon", $file);
 306                     $type = mimeinfo("type", $file);
 307                     if ($CFG->slasharguments) {
 308                         $ffurl = "$CFG->wwwroot/file.php/$filearea/$file";
 309                     } else {
 310                         $ffurl = "$CFG->wwwroot/file.php?file=/$filearea/$file";
 311                     }
 312                     $image = "<img src=\"$CFG->pixpath/f/$icon\" class=\"icon\" alt=\"\" />";
 313
 314                     if ($return == "html") {
 315                         $output .= "<a href=\"$ffurl\">$image</a> ";
 316                         $output .= "<a href=\"$ffurl\">$file</a><br />";
 317
 318                     } else if ($return == "text") {
 319                         $output .= "$strattachment $file:\n$ffurl\n";
 320
 321                     } else {
 322                         if (in_array($type, array('image/gif', 'image/jpeg', 'image/png'))) {    // Image attachments don't get printed as links
 323                             $imagereturn .= "<br /><img src=\"$ffurl\" alt=\"\" />";
 324                         } else {
 325                             echo "<a href=\"$ffurl\">$image</a> ";
 326                             echo filter_text("<a href=\"$ffurl\">$file</a><br />");
 327                         }
 328                     }
 329                 }
 330             }
 331         }
 332
 333         if ($return) {
 334             return $output;
 335         }
 336
 337         return $imagereturn;
 338     }
 339
 340
 341     /**
 342      * Use this function to retrieve a list of publish states available for
 343      * the currently logged in user.
 344      *
 345      * @return array This function returns an array ideal for sending to moodles'
 346      *                choose_from_menu function.
 347      */
 348     function blog_applicable_publish_states($courseid='') {
 349
 350         global $CFG;
 351
 352         // everyone gets draft access
 353         if ($CFG->bloglevel >= BLOG_USER_LEVEL) {
 354             $options = array ( 'draft' => get_string('publishtonoone', 'blog') );
 355         }
 356
 357         if ($CFG->bloglevel > BLOG_USER_LEVEL) {
 358             $options['site'] = get_string('publishtosite', 'blog');
 359         }
 360
 361         if ($CFG->bloglevel >= BLOG_GLOBAL_LEVEL) {
 362             $options['public'] = get_string('publishtoworld', 'blog');
 363         }
 364
 365         return $options;
 366     }
 367
 368
 369     /**
 370      * User can edit a blog entry if this is their own blog post and they have
 371      * the capability moodle/blog:create, or if they have the capability
 372      * moodle/blog:manageentries.
 373      *
 374      * This also applies to deleting of posts.
 375      */
 376     function blog_user_can_edit_post($blogEntry) {
 377
 378         global $CFG, $USER;
 379
 380         $sitecontext = get_context_instance(CONTEXT_SYSTEM, SITEID);
 381
 382         if (has_capability('moodle/blog:manageentries', $sitecontext)) {
 383             return true; // can edit any blog post
 384         }
 385
 386         if ($blogEntry->userid == $USER->id
 387           and has_capability('moodle/blog:create', $sitecontext)) {
 388             return true; // can edit own when having blog:create capability
 389         }
 390
 391         return false;
 392     }
 393
 394
 395     /**
 396      * Checks to see if a user can view the blogs of another user.
 397      * Only blog level is checked here, the capabilities are enforced
 398      * in blog/index.php
 399      */
 400     function blog_user_can_view_user_post($targetuserid, $blogEntry=null) {
 401         global $CFG, $USER;
 402
 403         if (empty($CFG->bloglevel)) {
 404             return false; // blog system disabled
 405         }
 406
 407         if (!empty($USER->id) and $USER->id == $targetuserid) {
 408             return true; // can view own posts in any case
 409         }
 410
 411         $sitecontext = get_context_instance(CONTEXT_SYSTEM, SITEID);
 412         if (has_capability('moodle/blog:manageentries', $sitecontext)) {
 413             return true; // can manage all posts
 414         }
 415
 416         // coming for 1 post, make sure it's not a draft
 417         if ($blogEntry and $blogEntry->publishstate == 'draft') {
 418             return false;  // can not view draft of others
 419         }
 420
 421         // coming for 1 post, make sure user is logged in, if not a public blog
 422         if ($blogEntry && $blogEntry->publishstate != 'public' && !isloggedin()) {
 423             return false;
 424         }
 425
 426         switch ($CFG->bloglevel) {
 427             case BLOG_GLOBAL_LEVEL:
 428                 return true;
 429             break;
 430
 431             case BLOG_SITE_LEVEL:
 432                 if (!empty($USER->id)) { // not logged in viewers forbidden
 433                     return true;
 434                 }
 435                 return false;
 436             break;
 437
 438             case BLOG_COURSE_LEVEL:
 439                 $mycourses = array_keys(get_my_courses($USER->id));
 440                 $usercourses = array_keys(get_my_courses($targetuserid));
 441                 $shared = array_intersect($mycourses, $usercourses);
 442                 if (!empty($shared)) {
 443                     return true;
 444                 }
 445                 return false;
 446             break;
 447
 448             case BLOG_GROUP_LEVEL:
 449                 $mycourses = array_keys(get_my_courses($USER->id));
 450                 $usercourses = array_keys(get_my_courses($targetuserid));
 451                 $shared = array_intersect($mycourses, $usercourses);
 452                 foreach ($shared as $courseid) {
 453                     $coursecontext = get_context_instance(CONTEXT_COURSE, $courseid);
 454                     if (has_capability('moodle/site:accessallgroups', $coursecontext)
 455                       or groupmode($courseid) != SEPARATEGROUPS) {
 456                         return true;
 457                     } else {
 458                         if ($usergroups = groups_get_all_groups($courseid, $targetuserid)) {
 459                             foreach ($usergroups as $usergroup) {
 460                                 if (groups_is_member($usergroup->id)) {
 461                                     return true;
 462                                 }
 463                             }
 464                         }
 465                     }
 466                 }
 467                 return false;
 468             break;
 469
 470             case BLOG_USER_LEVEL:
 471             default:
 472                 $personalcontext = get_context_instance(CONTEXT_USER, $targetuserid);
 473                 return has_capability('moodle/user:readuserblogs', $personalcontext);
 474             break;
 475
 476         }
 477     }
 478
 479
 480     /**
 481      * Main filter function.
 482      */
 483     function fetch_entries($postid='', $fetchlimit=10, $fetchstart='', $filtertype='', $filterselect='', $tagid='', $tag ='', $sort='lastmodified DESC', $limit=true) {
 484
 485         global $CFG, $USER;
 486
 487         /// the post table will be used for other things too
 488         $typesql = " AND p.module = 'blog' ";
 489
 490         /// set the tag id for searching
 491         if ($tagid) {
 492             $tag = $tagid;
 493         } else if ($tag) {
 494             if ($tagrec = get_record_sql('SELECT * FROM '.$CFG->prefix.'tag WHERE name LIKE "'.$tag.'"')) {
 495                 $tag = $tagrec->id;
 496             } else {
 497                 $tag = -1;    //no records found
 498             }
 499         }
 500
 501         // If we have specified an ID
 502         // Just return 1 entry
 503
 504         if ($postid) {
 505
 506             if ($post = get_record('post', 'id', $postid)) {
 507
 508                 if (blog_user_can_view_user_post($post->userid, $post)) {
 509
 510                     if ($user = get_record('user', 'id', $post->userid)) {
 511                         $post->email = $user->email;
 512                         $post->firstname = $user->firstname;
 513                         $post->lastname = $user->lastname;
 514                     }
 515                     $retarray[] = $post;
 516                     return $retarray;
 517                 } else {
 518                     return null;
 519                 }
 520
 521             } else { // bad postid
 522                 return null;
 523             }
 524         }
 525
 526         if ($tag) {
 527             $tagtablesql = $CFG->prefix.'tag_instance ti, ';
 528             $tagquerysql = ' AND ti.itemid = p.id AND ti.tagid = '.$tag.' ';
 529         } else {
 530             $tagtablesql = '';
 531             $tagquerysql = '';
 532         }
 533
 534         if (isloggedin() && !has_capability('moodle/legacy:guest', get_context_instance(CONTEXT_SYSTEM, SITEID), $USER->id, false)) {
 535             $permissionsql =  'AND (p.publishstate = \'site\' OR p.publishstate = \'public\' OR p.userid = '.$USER->id.')';
 536         } else {
 537             $permissionsql =  'AND p.publishstate = \'public\'';
 538         }
 539
 540         // fix for MDL-9165, use with readuserblogs capability in a user context can read that user's private blogs
 541         // admins can see all blogs regardless of publish states, as described on the help page
 542         if (has_capability('moodle/user:readuserblogs', get_context_instance(CONTEXT_SYSTEM, SITEID))) {
 543             $permissionsql = '';
 544         } else if ($filtertype=='user' && has_capability('moodle/user:readuserblogs', get_context_instance(CONTEXT_USER, $filterselect))) {
 545             $permissionsql = '';
 546         }
 547         /****************************************
 548          * depending on the type, there are 4   *
 549          * different possible sqls              *
 550          ****************************************/
 551
 552         $requiredfields = 'p.*, u.firstname,u.lastname,u.email';
 553
 554         if ($filtertype == 'course' && $filterselect == SITEID) {  // Really a site
 555             $filtertype = 'site';
 556         }
 557
 558         switch ($filtertype) {
 559
 560             case 'site':
 561
 562                 $SQL = 'SELECT '.$requiredfields.' FROM '.$CFG->prefix.'post p, '.$tagtablesql
 563                         .$CFG->prefix.'user u
 564                         WHERE p.userid = u.id '.$tagquerysql.'
 565                         AND u.deleted = 0
 566                         '.$permissionsql.$typesql;
 567
 568             break;
 569
 570             case 'course':
 571                 // all users with a role assigned
 572                 $context = get_context_instance(CONTEXT_COURSE, $filterselect);
 573
 574                 // MDL-10037, hidden users' blogs should not appear
 575                 if (has_capability('moodle/role:viewhiddenassigns', $context)) {
 576                     $hiddensql = '';
 577                 } else {
 578                     $hiddensql = ' AND ra.hidden = 0 ';
 579                 }
 580
 581                 $SQL = 'SELECT '.$requiredfields.' FROM '.$CFG->prefix.'post p, '.$tagtablesql
 582                         .$CFG->prefix.'role_assignments ra, '.$CFG->prefix.'user u
 583                         WHERE p.userid = ra.userid '.$tagquerysql.'
 584                         AND ra.contextid '.get_related_contexts_string($context).'
 585                         AND u.id = p.userid
 586                         AND u.deleted = 0
 587                         '.$hiddensql.$permissionsql.$typesql;
 588
 589             break;
 590
 591             case 'group':
 592
 593                 $SQL = 'SELECT '.$requiredfields.' FROM '.$CFG->prefix.'post p, '.$tagtablesql
 594                           .$CFG->prefix.'groups_members gm, '.$CFG->prefix.'user u
 595                         WHERE p.userid =g m.userid AND u.id = p.userid
 596                           AND gm.groupid = '.$filterselect.'
 597                           AND u.deleted = 0
 598                           '.$permissionsql.$typesql;
 599             break;
 600
 601             case 'user':
 602
 603                 $SQL = 'SELECT '.$requiredfields.' FROM '.$CFG->prefix.'post p, '.$tagtablesql
 604                         .$CFG->prefix.'user u
 605                         WHERE p.userid = u.id '.$tagquerysql.'
 606                         AND u.id = '.$filterselect.'
 607                         AND u.deleted = 0
 608                         '.$permissionsql.$typesql;
 609             break;
 610         }
 611
 612         $limitfrom = 0;
 613         $limitnum = 0;
 614
 615         if ($fetchstart !== '' && $limit) {
 616             $limitfrom = $fetchstart;
 617             $limitnum = $fetchlimit;
 618         }
 619
 620         $orderby = ' ORDER BY '. $sort .' ';
 621
 622         //global $db; $db->debug = true;
 623         $records = get_records_sql($SQL . $orderby, $limitfrom, $limitnum);
 624         //$db->debug = false;
 625
 626         if (empty($records)) {
 627             return array();
 628         }
 629
 630         return $records;
 631     }
 632
 633
 634     /**
 635      * get the count of viewable entries, easiest way is to count fetch_entries
 636      * this is used for print_paging_bar
 637      * this is not ideal, but because of the UNION in the sql in fetch_entries,
 638      * it is hard to use count_records_sql
 639      */
 640     function get_viewable_entry_count($postid='', $fetchlimit=10,
 641                 $fetchstart='', $filtertype='', $filterselect='', $tagid='',
 642                 $tag ='', $sort='lastmodified DESC') {
 643
 644         $blogEntries = fetch_entries($postid, $fetchlimit,
 645                 $fetchstart, $filtertype, $filterselect, $tagid, $tag,
 646                 $sort='lastmodified DESC', false);
 647
 648         return count($blogEntries);
 649     }
 650
 651
 652     /// Find the base url from $_GET variables, for print_paging_bar
 653     function get_baseurl($filtertype, $filterselect) {
 654
 655         $getcopy  = $_GET;
 656
 657         unset($getcopy['blogpage']);
 658
 659         $strippedurl = strip_querystring(qualified_me());
 660         if(!empty($getcopy)) {
 661             $first = false;
 662             $querystring = '';
 663             foreach($getcopy as $var => $val) {
 664                 if(!$first) {
 665                     $first = true;
 666                     if ($var != 'filterselect' && $var != 'filtertype') {
 667                         $querystring .= '?'.$var.'='.$val;
 668                         $hasparam = true;
 669                     } else {
 670                         $querystring .= '?';
 671                     }
 672                 } else {
 673                     if ($var != 'filterselect' && $var != 'filtertype') {
 674                     $querystring .= '&amp;'.$var.'='.$val;
 675                     $hasparam = true;
 676                     }
 677                 }
 678             }
 679             if (isset($hasparam)) {
 680                 $querystring .= '&amp;';
 681             } else {
 682                 $querystring = '?';
 683             }
 684         } else {
 685             $querystring = '?';
 686         }
 687
 688         return strip_querystring(qualified_me()) . $querystring. 'filtertype='.
 689                 $filtertype.'&amp;filterselect='.$filterselect.'&amp;';
 690
 691     }
 692 ?>