Code analysis and learning of discuz (4) Forum entrance file

Just a rough analysis of the execution process, mainly to obtain the value of the mod parameter, and load the controller according to the value. The controller position is specified in the last line.

1) Define the application name and load two necessary files

<span>define</span>('APPTYPEID', 2<span>);
</span><span>define</span>('CURSCRIPT', 'forum'<span>);

</span><span>require</span> './source/class/class_core.php';<span>//</span><span>核心类</span>
<span>require</span> './source/function/function_forum.php';<span>//</span><span>论坛函数库</span>

2) The modarray array limits the mod value range

<span>$modarray</span> = <span>array</span>('ajax','announcement','attachment','forumdisplay',
    'group','image','index','medal','misc','modcp','notice','post','redirect',
    'relatekw','relatethread','rss','topicadmin','trade','viewthread','tag','collection','guide'<span>
);
</span><span>//</span><span>模块缓存列表,各个子数组分别表示各个模块要缓存的缓存项</span>
<span>$modcachelist</span> = <span>array</span><span>(
    </span>'index'        => <span>array</span>('announcements', 'onlinelist', 'forumlinks',
            'heats', 'historyposts', 'onlinerecord', 'userstats', 'diytemplatenameforum'),
    'forumdisplay'    => <span>array</span>('smilies', 'announcements_forum', 'globalstick', 'forums',
            'onlinelist', 'forumstick', 'threadtable_info', 'threadtableids', 'stamps', 'diytemplatenameforum'),
    'viewthread'    => <span>array</span>('smilies', 'smileytypes', 'forums', 'usergroups',
            'stamps', 'bbcodes', 'smilies',    'custominfo', 'groupicon', 'stamps',
            'threadtableids', 'threadtable_info', 'posttable_info', 'diytemplatenameforum'),
    'redirect'    => <span>array</span>('threadtableids', 'threadtable_info', 'posttable_info'),
    'post'        => <span>array</span>('bbcodes_display', 'bbcodes', 'smileycodes', 'smilies', 'smileytypes',
            'domainwhitelist', 'albumcategory'),
    'space'        => <span>array</span>('fields_required', 'fields_optional', 'custominfo'),
    'group'        => <span>array</span>('grouptype', 'diytemplatenamegroup'),<span>
);</span>

3) If the mod parameter is empty or illegal, the expression will be true, causing the value to be index

<span>$mod</span> = !<span>in_array</span>(C::app()-><span>var</span>['mod'], <span>$modarray</span>) ? 'index' : C::app()-><span>var</span>['mod'];

4) Do initialization

<span>define</span>('CURMODULE', <span>$mod</span><span>);
</span><span>//</span><span>var_dump(CURMODULE);</span>
<span>$cachelist</span> = <span>array</span><span>();
</span><span>if</span>(<span>isset</span>(<span>$modcachelist</span>[CURMODULE])) {<span>//</span><span>如果当前缓存项存在的话，</span>
    <span>$cachelist</span> = <span>$modcachelist</span>[CURMODULE];<span>//</span><span>获取当前缓存组的缓存列表项</span>

    <span>$cachelist</span>[] = 'plugin'<span>;
    </span><span>$cachelist</span>[] = 'pluginlanguage_system'<span>;
}
</span><span>if</span>(C::app()-><span>var</span>['mod'] == 'group'<span>) {
    </span><span>$_G</span>['basescript'] = 'group'<span>;
}

C</span>::app()->cachelist = <span>$cachelist</span><span>;
C</span>::app()->init();<span>//</span><span>初始化</span>
<span>

loadforum();


set_rssauth();


runhooks();</span>

5) Load controller

<span>$navtitle</span> = <span>str_replace</span>('{bbname}', <span>$_G</span>['setting']['bbname'], <span>$_G</span>['setting']['seotitle']['forum'<span>]);
</span><span>$_G</span>['setting']['threadhidethreshold'] = 1<span>;
</span><span>//</span><span>var_dump($mod);</span>
<span>require</span> DISCUZ_ROOT.'./source/module/forum/forum_'.<span>$mod</span>.'.php';

The above introduces the forum entrance file for code analysis and learning of discuz (4), including the content. I hope it will be helpful to friends who are interested in PHP tutorials.