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标题: discuz缓存应用详解. [打印本页]

作者: superadmin 时间: 2009-12-16 16:11
标题: discuz缓存应用详解.
example.php 测试文件解释

<?php

require_once './include/common.inc.php';

require_once './include/cache.func.php';

//参数说明: 缓存标识名, 内置数据取得标识, 缓存数据(string), 缓存前缀.

//writetocache('文件名', $cachenames, $cachedata = '', $prefix = 'cache_')

// 第一种模式. 指针转成变量,写入到test.php当中, 目录在forundata/cache/

writetocache('test','',getcachevars(array('var'=>'变量值','phps'=>'discuz.net')), $prefix = 'caches_');

//第二种模式,这种比较好, 生成一个数组, 写在文件test2.php中.

writetocache('test2', '', '$_DCACHE[\'settings\'] = '.arrayeval(range(1,20)).";\n\n", $prefix = 'caches_');

//第三种模式,$cachedata内容是什么, 就写入是什么, 很强悍.

writetocache('test3', '',"array('var1'=>'mysql php','var2'=>'fenanr')", $prefix = 'caches_');

//第四种模式,当没有$prefix值时, 默认生成cache_xxxx.php的缓存命名.

writetocache('test4', '',"array('var1'=>'php 6','var2'=>'discuz')");

?>
复制代码总结:
为了支撑高压力及访问量下的程序动作正常, discuz的缓存结构写得非常复杂. 当然, 不同的人思考方式不相同.
这次用了几个常用例子讲解缓存系统的应用, 希望可以帮助到需要的朋友.
由于限制了字节, 所以函数解释放二楼.

作者: superadmin 时间: 2009-12-16 16:12
cache.func.php文件详解

<?php

/*

      [Discuz!] (C)2001-2009 Comsenz Inc.

      This is NOT a freeware, use is subject to license terms

      $Id: cache.func.php 21311 2009-11-26 01:35:43Z liulanbo $

*/

define('DISCUZ_KERNEL_VERSION', '7.2');

define('DISCUZ_KERNEL_RELEASE', '20091126');

function updatecache($cachename = '') {

      //分别引入 mysql操作库存,论坛名称,数据库前缀,最大论坛时间(估计是授权用户专用)

      global $db, $bbname, $tablepre, $maxbdays;

      //静态化一下数组,比如$cachename = setings    就读到这个数组  'settings'       => array('settings'),

      static $cachescript = array

            (

            'settings'       => array('settings'),

            'forums'       => array('forums'),

            'icons'             => array('icons'),

            'stamps'       => array('stamps'),

            'ranks'             => array('ranks'),

            'usergroups'       => array('usergroups'),

            'request'       => array('request'),

            'medals'       => array('medals'),

            'magics'       => array('magics'),

            'topicadmin'       => array('modreasons', 'stamptypeid'),

            'archiver'       => array('advs_archiver'),

            'register'       => array('advs_register', 'ipctrl'),

            'faqs'             => array('faqs'),

            'secqaa'       => array('secqaa'),

            'censor'       => array('censor'),

            'ipbanned'       => array('ipbanned'),

            'smilies'       => array('smilies_js'),

            'forumstick' => array('forumstick'),

            'index'             => array('announcements', 'onlinelist', 'forumlinks', 'advs_index', 'heats'),

            'forumdisplay'       => array('smilies', 'announcements_forum', 'globalstick', 'forums', 'icons', 'onlinelist', 'advs_forumdisplay', 'forumstick'),

            'viewthread'       => array('smilies', 'smileytypes', 'forums', 'usergroups', 'ranks', 'stamps', 'bbcodes', 'smilies', 'advs_viewthread', 'tags_viewthread', 'custominfo', 'groupicon', 'focus', 'stamps'),

            'post'             => array('bbcodes_display', 'bbcodes', 'smileycodes', 'smilies', 'smileytypes', 'icons', 'domainwhitelist'),

            'profilefields'       => array('fields_required', 'fields_optional'),

            'viewpro'       => array('fields_required', 'fields_optional', 'custominfo'),

            'bbcodes'       => array('bbcodes', 'smilies', 'smileytypes'),

            );

      //当最大时间有值时,就将在$cachescript 增加两段

      if($maxbdays) {

            $cachescript['birthdays'] = array('birthdays');

            $cachescript['index'][] = 'birthdays_index';

      }

      // 组成更新数组.

      $updatelist = empty($cachename) ? array_values($cachescript) : (is_array($cachename) ? array('0' => $cachename) : array(array('0' => $cachename)));

      $updated = array();

      // 现在循环. 由于是二维数组, 所以循环两次.

      foreach($updatelist as $value) {

            foreach($value as $cname) {

                     //判断如果$updated数组为假,或者$updated中没有$cname的值,就进入, 目的是为了防止重复

                     if(empty($updated) || !in_array($cname, $updated)) {

                              $updated[] = $cname;  //进来一次, 就丢进数组, 以便循环中再次使用.

                              getcachearray($cname); // 取得相应的值,并且生成缓存.

                     }

            }

      }



      // 假如是空参数进入, 就对所有的缓存标识作判断.

      foreach($cachescript as $script => $cachenames) {

            if(empty($cachename) || (!is_array($cachename) && in_array($cachename, $cachenames)) || (is_array($cachename) && array_intersect($cachename, $cachenames))) {

                     $cachedata = '';

                     $query = $db->query("SELECT data FROM {$tablepre}caches WHERE cachename in(".implodeids($cachenames).")");

                     while($data = $db->fetch_array($query)) {

                              $cachedata .= $data['data'];

                     }

                     writetocache($script, $cachenames, $cachedata);

            }

      }



      //假如参数为空,或者参数为styles 就处理模板风格等缓存

      if(!$cachename || $cachename == 'styles') {

            $stylevars = $styledata = $styleicons = array();

            $defaultstyleid = $db->result_first("SELECT value FROM {$tablepre}settings WHERE variable = 'styleid'");

            list(, $imagemaxwidth) = explode("\t", $db->result_first("SELECT value FROM {$tablepre}settings WHERE variable = 'zoomstatus'"));

            $imagemaxwidth = $imagemaxwidth ? $imagemaxwidth : 600;

            $imagemaxwidthint = intval($imagemaxwidth);

            $query = $db->query("SELECT sv.* FROM {$tablepre}stylevars sv LEFT JOIN {$tablepre}styles s ON s.styleid = sv.styleid AND (s.available=1 OR s.styleid='$defaultstyleid')");

            while($var = $db->fetch_array($query)) {

                     $stylevars[$var['styleid']][$var['variable']] = $var['substitute'];

            }

            $query = $db->query("SELECT s.*, t.directory AS tpldir FROM {$tablepre}styles s LEFT JOIN {$tablepre}templates t ON s.templateid=t.templateid WHERE s.available=1 OR s.styleid='$defaultstyleid'");

            while($data = $db->fetch_array($query)) {

                     $data = array_merge($data, $stylevars[$data['styleid']]);

                     $datanew = array();

                     $data['imgdir'] = $data['imgdir'] ? $data['imgdir'] : 'images/default';

                     $data['styleimgdir'] = $data['styleimgdir'] ? $data['styleimgdir'] : $data['imgdir'];

                     foreach($data as $k => $v) {

                              if(substr($k, -7, 7) == 'bgcolor') {

                                    $newkey = substr($k, 0, -7).'bgcode';

                                    $datanew[$newkey] = setcssbackground($data, $k);

                              }

                     }

                     $data = array_merge($data, $datanew);

                     $styleicons[$data['styleid']] = $data['menuhover'];

                     if(strstr($data['boardimg'], ',')) {

                              $flash = explode(",", $data['boardimg']);

                              $flash[0] = trim($flash[0]);

                              $flash[0] = preg_match('/^http:\/\//i', $flash[0]) ? $flash[0] : $data['styleimgdir'].'/'.$flash[0];

                              $data['boardlogo'] = "<embed src=\"".$flash[0]."\" width=\"".trim($flash[1])."\" height=\"".trim($flash[2])."\" type=\"application/x-shockwave-flash\" wmode=\"transparent\"></embed>";

                     } else {

                              $data['boardimg'] = preg_match('/^http:\/\//i', $data['boardimg']) ? $data['boardimg'] : $data['styleimgdir'].'/'.$data['boardimg'];

                              $data['boardlogo'] = "<img src=\"$data[boardimg]\" alt=\"$bbname\" border=\"0\" />";

                     }

                     $data['bold'] = $data['nobold'] ? 'normal' : 'bold';

                     $contentwidthint = intval($data['contentwidth']);

                     $contentwidthint = $contentwidthint ? $contentwidthint : 600;

                     if(substr(trim($data['contentwidth']), -1, 1) != '%') {

                              if(substr(trim($imagemaxwidth), -1, 1) != '%') {

                                    $data['imagemaxwidth'] = $imagemaxwidthint > $contentwidthint ? $contentwidthint : $imagemaxwidthint;

                              } else {

                                    $data['imagemaxwidth'] = intval($contentwidthint * $imagemaxwidthint / 100);

                              }

                     } else {

                              if(substr(trim($imagemaxwidth), -1, 1) != '%') {

                                    $data['imagemaxwidth'] = '%'.$imagemaxwidthint;

                              } else {

                                    $data['imagemaxwidth'] = ($imagemaxwidthint > $contentwidthint ? $contentwidthint : $imagemaxwidthint).'%';

                              }

                     }

                     $data['verhash'] = random(3);

                     $styledata[] = $data;

            }

            foreach($styledata as $data) {

                     $data['styleicons'] = $styleicons;

                     writetocache($data['styleid'], '', getcachevars($data, 'CONST'), 'style_');

                     writetocsscache($data);

            }

      }

      //假如参数为空,或者参数为usergroups 就处理用户组等缓存

      if(!$cachename || $cachename == 'usergroups') {

            @include_once DISCUZ_ROOT.'forumdata/cache/cache_settings.php';

            $threadplugins = !isset($_DCACHE['settings']) ? $GLOBALS['threadplugins'] : $_DCACHE['settings'];

            $allowthreadplugin = $threadplugins ? unserialize($db->result_first("SELECT value FROM {$tablepre}settings WHERE variable='allowthreadplugin'")) : array();

            $query = $db->query("SELECT * FROM {$tablepre}usergroups u

                                    LEFT JOIN {$tablepre}admingroups a ON u.groupid=a.admingid");

            while($data = $db->fetch_array($query)) {

                     $ratearray = array();

                     if($data['raterange']) {

                              foreach(explode("\n", $data['raterange']) as $rating) {

                                    $rating = explode("\t", $rating);

                                    $ratearray[$rating[0]] = array('min' => $rating[1], 'max' => $rating[2], 'mrpd' => $rating[3]);

                              }

                     }

                     $data['raterange'] = $ratearray;

                     $data['grouptitle'] = $data['color'] ? '<font color="'.$data['color'].'">'.$data['grouptitle'].'</font>' : $data['grouptitle'];

                     $data['grouptype'] = $data['type'];

                     $data['grouppublic'] = $data['system'] != 'private';

                     $data['groupcreditshigher'] = $data['creditshigher'];

                     $data['groupcreditslower'] = $data['creditslower'];

                     $data['allowthreadplugin'] = $threadplugins ? $allowthreadplugin[$data['groupid']] : array();

                     unset($data['type'], $data['system'], $data['creditshigher'], $data['creditslower'], $data['color'], $data['groupavatar'], $data['admingid']);

                     writetocache($data['groupid'], '', getcachevars($data), 'usergroup_');

            }

      }

      //假如参数为空,或者参数为admingroups 就处理管理用户组等缓存

      if(!$cachename || $cachename == 'admingroups') {

            $query = $db->query("SELECT * FROM {$tablepre}admingroups");

            while($data = $db->fetch_array($query)) {

                     writetocache($data['admingid'], '', getcachevars($data), 'admingroup_');

            }

      }

      if(!$cachename || $cachename == 'plugins') {

            $query = $db->query("SELECT pluginid, available, adminid, name, identifier, datatables, directory, copyright, modules FROM {$tablepre}plugins");

            while($plugin = $db->fetch_array($query)) {

                     $data = array_merge($plugin, array('modules' => array()), array('vars' => array()));

                     $plugin['modules'] = unserialize($plugin['modules']);

                     if(is_array($plugin['modules'])) {

                              foreach($plugin['modules'] as $module) {

                                    $data['modules'][$module['name']] = $module;

                              }

                     }

                     $queryvars = $db->query("SELECT variable, value FROM {$tablepre}pluginvars WHERE pluginid='$plugin[pluginid]'");

                     while($var = $db->fetch_array($queryvars)) {

                              $data['vars'][$var['variable']] = $var['value'];

                     }

                     writetocache($plugin['identifier'], '', "\$_DPLUGIN['$plugin[identifier]'] = ".arrayeval($data), 'plugin_');

            }

      }

      //假如参数为空,或者参数为threadsorts 就处理主题信息等缓存

      if(!$cachename || $cachename == 'threadsorts') {

            $sortlist = $templatedata = array();

            $query = $db->query("SELECT t.typeid AS sortid, tt.optionid, tt.title, tt.type, tt.unit, tt.rules, tt.identifier, tt.description, tv.required, tv.unchangeable, tv.search, tv.subjectshow

                     FROM {$tablepre}threadtypes t

                     LEFT JOIN {$tablepre}typevars tv ON t.typeid=tv.sortid

                     LEFT JOIN {$tablepre}typeoptions tt ON tv.optionid=tt.optionid

                     WHERE t.special='1' AND tv.available='1'

                     ORDER BY tv.displayorder");

            while($data = $db->fetch_array($query)) {

                     $data['rules'] = unserialize($data['rules']);

                     $sortid = $data['sortid'];

                     $optionid = $data['optionid'];

                     $sortlist[$sortid][$optionid] = array(

                              'title' => dhtmlspecialchars($data['title']),

                              'type' => dhtmlspecialchars($data['type']),

                              'unit' => dhtmlspecialchars($data['unit']),

                              'identifier' => dhtmlspecialchars($data['identifier']),

                              'description' => dhtmlspecialchars($data['description']),

                              'required' => intval($data['required']),

                              'unchangeable' => intval($data['unchangeable']),

                              'search' => intval($data['search']),

                              'subjectshow' => intval($data['subjectshow']),

                              );

                     if(in_array($data['type'], array('select', 'checkbox', 'radio'))) {

                              if($data['rules']['choices']) {

                                    $choices = array();

                                    foreach(explode("\n", $data['rules']['choices']) as $item) {

                                             list($index, $choice) = explode('=', $item);

                                             $choices[trim($index)] = trim($choice);

                                    }

                                    $sortlist[$sortid][$optionid]['choices'] = $choices;

                              } else {

                                    $typelist[$sortid][$optionid]['choices'] = array();

                              }

                     } elseif(in_array($data['type'], array('text', 'textarea'))) {

                              $sortlist[$sortid][$optionid]['maxlength'] = intval($data['rules']['maxlength']);

                     } elseif($data['type'] == 'image') {

                              $sortlist[$sortid][$optionid]['maxwidth'] = intval($data['rules']['maxwidth']);

                              $sortlist[$sortid][$optionid]['maxheight'] = intval($data['rules']['maxheight']);

                     } elseif($data['type'] == 'number') {

                              $sortlist[$sortid][$optionid]['maxnum'] = intval($data['rules']['maxnum']);

                              $sortlist[$sortid][$optionid]['minnum'] = intval($data['rules']['minnum']);

                     }

            }

            $query = $db->query("SELECT typeid, description, template, stemplate FROM {$tablepre}threadtypes WHERE special='1'");

            while($data = $db->fetch_array($query)) {

                     $templatedata[$data['typeid']] = $data['template'];

                     $stemplatedata[$data['typeid']] = $data['stemplate'];

                     $threaddesc[$data['typeid']] = dhtmlspecialchars($data['description']);

            }

            foreach($sortlist as $sortid => $option) {

                     writetocache($sortid, '', "\$_DTYPE = ".arrayeval($option).";\n\n\$_DTYPETEMPLATE = \"".str_replace('"', '\"', $templatedata[$sortid])."\";\n\n\$_DSTYPETEMPLATE = \"".str_replace('"', '\"', $stemplatedata[$sortid])."\";\n", 'threadsort_');

            }

      }

}

// 这是css缓存文件生成需要的处理css背景颜色函数

function setcssbackground(&$data, $code) {

      $codes = explode(' ', $data[$code]);

      $css = $codevalue = '';

      for($i = 0; $i < count($codes); $i++) {

            if($i < 2) {

                     if($codes[$i] != '') {

                              if($codes[$i]{0} == '#') {

                                    $css .= strtoupper($codes[$i]).' ';

                                    $codevalue = strtoupper($codes[$i]);

                              } elseif(preg_match('/^http:\/\//i', $codes[$i])) {

                                    $css .= 'url(\"'.$codes[$i].'\") ';

                              } else {

                                    $css .= 'url("'.$data['styleimgdir'].'/'.$codes[$i].'") ';

                              }

                     }

            } else {

                     $css .= $codes[$i].' ';

            }

      }

      $data[$code] = $codevalue;

      $css = trim($css);

      return $css ? 'background: '.$css : '';

}

// 更新系统配置缓存

function updatesettings() {

      global $_DCACHE;

      if(isset($_DCACHE['settings']) && is_array($_DCACHE['settings'])) {

            writetocache('settings', '', '$_DCACHE[\'settings\'] = '.arrayeval($_DCACHE['settings']).";\n\n");

      }

}

// 写入缓存文件, 详解一下.

function writetocache($script, $cachenames, $cachedata = '', $prefix = 'cache_') {

      global $authkey;

      //假如$cachenames是数组,并且$cachedata为假

      if(is_array($cachenames) && !$cachedata) {

            foreach($cachenames as $name) {

                     //赋予内置函数的指定标识, 即可有数据返回

                     $cachedata .= getcachearray($name, $script);

            }

      }

      $dir = DISCUZ_ROOT.'./forumdata/cache/';

      //如果缓存目录不存在, 就生成一个.

      if(!is_dir($dir)) {

            @mkdir($dir, 0777);

      }

      if($fp = @fopen("$dir$prefix$script.php", 'wb')) {

            fwrite($fp, "<?php\n//Discuz! cache file, DO NOT modify me!".

                     "\n//Created: ".date("M j, Y, G:i").

                     "\n//Identify: ".md5($prefix.$script.'.php'.$cachedata.$authkey)."\n\n$cachedata?>");

            fclose($fp);

      } else {

            exit('Can not write to cache files, please check directory ./forumdata/ and ./forumdata/cache/ .');

      }

}

// 更新css缓存生成过程中, 里面的路径问题, 参数为css.htm的内容.

function writetocsscache($data) {

      $cssdata = '';

      foreach(array('_common' => array('css_common', 'css_append'),

                     '_special' => array('css_special', 'css_special_append'),

                     '_wysiwyg' => array('css_wysiwyg', '_wysiwyg_append'),

                     '_seditor' => array('css_seditor', 'css_seditor_append'),

                     '_calendar' => array('css_calendar', 'css_calendar_append'),

                     '_moderator' => array('css_moderator', 'css_moderator_append'),

                     '_script' => array('css_script', 'css_script_append'),

                     '_task_newbie' => array('css_task_newbie', 'css_task_newbie_append')

            ) as $extra => $cssfiles) {

            $cssdata = '';

            foreach($cssfiles as $css) {

                     $cssfile = DISCUZ_ROOT.'./'.$data['tpldir'].'/'.$css.'.htm';

                     !file_exists($cssfile) && $cssfile = DISCUZ_ROOT.'./templates/default/'.$css.'.htm';

                     if(file_exists($cssfile)) {

                              $fp = fopen($cssfile, 'r');

                              $cssdata .= @fread($fp, filesize($cssfile))."\n\n";

                              fclose($fp);

                     }

            }

            $cssdata = preg_replace("/\{([A-Z0-9]+)\}/e", '\$data[strtolower(\'\1\')]', $cssdata);

            $cssdata = preg_replace("/<\?.+?\?>\s*/", '', $cssdata);

            $cssdata = !preg_match('/^http:\/\//i', $data['styleimgdir']) ? str_replace("url(\"$data[styleimgdir]", "url(\"../../$data[styleimgdir]", $cssdata) : $cssdata;

            $cssdata = !preg_match('/^http:\/\//i', $data['styleimgdir']) ? str_replace("url($data[styleimgdir]", "url(../../$data[styleimgdir]", $cssdata) : $cssdata;

            $cssdata = !preg_match('/^http:\/\//i', $data['imgdir']) ? str_replace("url(\"$data[imgdir]", "url(\"../../$data[imgdir]", $cssdata) : $cssdata;

            $cssdata = !preg_match('/^http:\/\//i', $data['imgdir']) ? str_replace("url($data[imgdir]", "url(../../$data[imgdir]", $cssdata) : $cssdata;

            if($extra != '_script') {

                     $cssdata = preg_replace(array('/\s*([,;:\{\}])\s*/', '/[\t\n\r]/', '/\/\*.+?\*\//'), array('\\1', '',''), $cssdata);

            }

            if(@$fp = fopen(DISCUZ_ROOT.'./forumdata/cache/style_'.$data['styleid'].$extra.'.css', 'w')) {

                     fwrite($fp, $cssdata);

                     fclose($fp);

            } else {

                     exit('Can not write to cache files, please check directory ./forumdata/ and ./forumdata/cache/ .');

            }

      }

}

// 将js文件复制到缓存目录.

function writetojscache() {

      $dir = DISCUZ_ROOT.'include/js/';

      $dh = opendir($dir);

      $remove = array(

            '/(^|\r|\n)\/\*.+?(\r|\n)\*\/(\r|\n)/is',

            '/\/\/note.+?(\r|\n)/i',

            '/\/\/debug.+?(\r|\n)/i',

            '/(^|\r|\n)(\s|\t)+/',

            '/(\r|\n)/',

      );

      while(($entry = readdir($dh)) !== false) {

            if(fileext($entry) == 'js') {

                     $jsfile = $dir.$entry;

                     $fp = fopen($jsfile, 'r');

                     $jsdata = @fread($fp, filesize($jsfile));

                     fclose($fp);

                     $jsdata = preg_replace($remove, '', $jsdata);

                     if(@$fp = fopen(DISCUZ_ROOT.'./forumdata/cache/'.$entry, 'w')) {

                              fwrite($fp, $jsdata);

                              fclose($fp);

                     } else {

                              exit('Can not write to cache files, please check directory ./forumdata/ and ./forumdata/cache/ .');

                     }

            }

      }

}

//取得缓存数组, 内置.  标识名,及文件名.

function getcachearray($cachename, $script = '') {

      global $db, $timestamp, $tablepre, $timeoffset, $maxbdays, $smcols, $smrows, $charset, $scriptlang;

      //省略上千代码.

}

//组成缓存文件需要的数据数组.

function getcachevars($data, $type = 'VAR') {

      $evaluate = '';

      foreach($data as $key => $val) {

            if(!preg_match("/^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*$/", $key)) {

                     continue;

            }

            if(is_array($val)) {

                     $evaluate .= "\$$key = ".arrayeval($val).";\n";

            } else {

                     $val = addcslashes($val, '\'\\');

                     $evaluate .= $type == 'VAR' ? "\$$key = '$val';\n" : "define('".strtoupper($key)."', '$val');\n";

            }

      }

      return $evaluate;

}

//取得广告设置的内容数组.

function advertisement($range) {

      global $db, $tablepre, $timestamp;

      $advs = array();

      $query = $db->query("SELECT * FROM {$tablepre}advertisements WHERE available>'0' AND starttime<='$timestamp' ORDER BY displayorder");

      if($db->num_rows($query)) {

            while($adv = $db->fetch_array($query)) {

                     if(in_array($adv['type'], array('footerbanner', 'thread'))) {

                              $parameters = unserialize($adv['parameters']);

                              $position = isset($parameters['position']) && in_array($parameters['position'], array(2, 3)) ? $parameters['position'] : 1;

                              $type = $adv['type'].$position;

                     } else {

                              $type = $adv['type'];

                     }

                     $adv['targets'] = in_array($adv['targets'], array('', 'all')) ? ($type == 'text' ? 'forum' : (substr($type, 0, 6) == 'thread' ? 'forum' : 'all')) : $adv['targets'];

                     foreach(explode("\t", $adv['targets']) as $target) {

                              if($range == 'index' && substr($target, 0, 3) == 'gid') {

                                    $advs['cat'][$type][substr($target, 3)][] = $adv['advid'];

                                    $advs['items'][$adv['advid']] = $adv['code'];

                              }

                              $target = $target == '0' || $type == 'intercat' ? 'index' : (in_array($target, array('all', 'index', 'forumdisplay', 'viewthread', 'register', 'redirect', 'archiver')) ? $target : ($target == 'forum' ? 'forum_all' : 'forum_'.$target));

                              if((($range == 'forumdisplay' && !in_array($adv['type'], array('thread', 'interthread'))) || $range == 'viewthread') &&  substr($target, 0, 6) == 'forum_') {

                                    if($adv['type'] == 'thread') {

                                             foreach(isset($parameters['displayorder']) ? explode("\t", $parameters['displayorder']) : array('0') as $postcount) {

                                                      $advs['type'][$type.'_'.$postcount][$target][] = $adv['advid'];

                                             }

                                    } else {

                                             $advs['type'][$type][$target][] = $adv['advid'];

                                    }

                                    $advs['items'][$adv['advid']] = $adv['code'];

                              } elseif($range == 'all' && in_array($target, array('all', 'redirect'))) {

                                    $advs[$target]['type'][$type][] = $adv['advid'];

                                    $advs[$target]['items'][$adv['advid']] = $adv['code'];

                              } elseif($range == 'index' && $type == 'intercat') {

                                    $parameters = unserialize($adv['parameters']);

                                    foreach(is_array($parameters['position']) ? $parameters['position'] : array('0') as $position) {

                                             $advs['type'][$type][$position][] = $adv['advid'];

                                             $advs['items'][$adv['advid']] = $adv['code'];

                                    }

                              } elseif($target == $range || ($range == 'index' && $target == 'forum_all' && $type == 'text')) {

                                    $advs['type'][$type][] = $adv['advid'];

                                    $advs['items'][$adv['advid']] = $adv['code'];

                              }

                     }

            }

      }

      return $advs;

}

// 简单判断.

function pluginmodulecmp($a, $b) {

      return $a['displayorder'] > $b['displayorder'] ? 1 : -1;

}

// 计算长宽的函数

function smthumb($size, $smthumb = 50) {

      if($size[0] <= $smthumb && $size[1] <= $smthumb) {

            return array('w' => $size[0], 'h' => $size[1]);

      }

      $sm = array();

      $x_ratio = $smthumb / $size[0];

      $y_ratio = $smthumb / $size[1];

      if(($x_ratio * $size[1]) < $smthumb) {

            $sm['h'] = ceil($x_ratio * $size[1]);

            $sm['w'] = $smthumb;

      } else {

            $sm['w'] = ceil($y_ratio * $size[0]);

            $sm['h'] = $smthumb;

      }

      return $sm;

}

// 处理缓存生成时部分内容样式的解析

function parsehighlight($highlight) {

      if($highlight) {

            $colorarray = array('', 'red', 'orange', 'yellow', 'green', 'cyan', 'blue', 'purple', 'gray');

            $string = sprintf('%02d', $highlight);

            $stylestr = sprintf('%03b', $string[0]);

            $style = ' style="';

            $style .= $stylestr[0] ? 'font-weight: bold;' : '';

            $style .= $stylestr[1] ? 'font-style: italic;' : '';

            $style .= $stylestr[2] ? 'text-decoration: underline;' : '';

            $style .= $string[1] ? 'color: '.$colorarray[$string[1]] : '';

            $style .= '"';

      } else {

            $style = '';

      }

      return $style;

}

//  这就是传说的array的立体型输出.

function arrayeval($array, $level = 0) {

      if(!is_array($array)) {

            return "'".$array."'";

      }

      if(is_array($array) && function_exists('var_export')) {

            return var_export($array, true);

      }

      $space = '';

      for($i = 0; $i <= $level; $i++) {

            $space .= "\t";

      }

      $evaluate = "Array\n$space(\n";

      $comma = $space;

      if(is_array($array)) {

            foreach($array as $key => $val) {

                     $key = is_string($key) ? '\''.addcslashes($key, '\'\\').'\'' : $key;

                     $val = !is_array($val) && (!preg_match("/^\-?[1-9]\d*$/", $val) || strlen($val) > 12) ? '\''.addcslashes($val, '\'\\').'\'' : $val;

                     if(is_array($val)) {

                              $evaluate .= "$comma$key => ".arrayeval($val, $level + 1);

                     } else {

                              $evaluate .= "$comma$key => $val";

                     }

                     $comma = ",\n$space";

            }

      }

      $evaluate .= "\n$space)";

      return $evaluate;

}

?>

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