The previous article only studied the JImage class. Today we will continue with other commonly used joomla built-in classes. Personally, I started with the commonly used classes. It is written from the perspective of using PHP itself. If PHP’s own functions are more convenient to use than Joomla’s built-in classes, I will not filter it out. If you really want to use it, check it out yourself. Personally, I feel that no matter how excellent the method is, if PHP’s own functions It can also be solved easily with functions, so it is best to use PHP built-in functions. The first thing to learn PHP is to learn the built-in functions well. Okay, let’s explain in detail the commonly used classes and methods.
1. Document class, used as the main operation on the head of the current page element.
<span>$document</span> = JFactory::<span>getDocument();
</span><span>$document</span>->addScript('1.js');<span>//</span><span>添加js文件</span>
<span>$document</span>->addScriptDeclaration('alert(1)');<span>//</span><span>添加js代码</span>
<span>$document</span>->addStyleDeclaration(); <span>//</span><span>css</span>
<span>$document</span>->addStyleSheet('1.css'<span>);
</span><span>$document</span>->setMetaData('description','关键字');<span>//</span><span>设置描述或关键字</span>
<span>$document</span>->setCharset('utf-8'<span>);
</span><span>$document</span>->setTitle('标题');
2. File operation requires importing jimport('joomla.filesystem.file');
<span>$j</span> = <span>new</span><span> JFile(); getExt(</span><span>$file</span>) <span>//</span><span>获取扩展名不含.</span> getName(<span>$file</span>) <span>//</span><span>获得文件名</span> exists(<span>$file</span>) <span>//</span><span>文件是否存在</span> delete(<span>$file</span>) <span>//</span><span>删除文件</span> <span>copy</span>(<span>$old</span>,<span>$new</span>) <span>//</span><span>复制</span> upload(<span>$src</span>) <span>//</span><span>上传</span> write(<span>$file</span>) <span>//</span><span>写文件</span> read(<span>$file</span>) <span>//</span><span>读文件</span> move(<span>$old</span>,<span>$new</span>) <span>//</span><span>移动文件</span>
These methods are useful in file reading and writing, image file uploading, etc.
3. Folder operation, jimport('joomla.filesystem.folder'); Generally when we import, we import all files and folders, and we often use it
JFolder::create(<span>$path</span>,777) <span>//</span><span>创建文件夹,支持多层</span> JFolder::delete(<span>$path</span>) <span>//</span><span>删除文件夹,可以包含文件</span> JFolder::exists(<span>$path</span>) <span>//</span><span>检测文件夹是否存在</span> JFolder::<span>copy</span>(<span>$pathold</span>,<span>$pathnew</span>) <span>//</span><span>复制文件夹</span> JFolder::files(<span>$path</span>) <span>//</span><span>列出文件夹下面文件的数组</span> JFolder::folders(<span>$path</span>) <span>//</span><span>列出文件夹下面文件夹的数组</span>
Let me talk about it here:: It is a static method, and there are many classes that support static methods;
4. Icon generation class, used to generate small icons in the background. One of the commonly used saves is one.
JToolBarHelper::title(JText::_('添加个人信息'), 'weblinks.png');<span>//</span><span>标题</span>
JToolBarHelper::addNew('info.add');<span>//</span><span>添加</span>
JToolBarHelper::apply('info.apply');<span>//</span><span>保存</span>
JToolBarHelper::save('info.save');<span>//</span><span>保存关闭</span>
JToolBarHelper::editList('info.edit');<span>//</span><span>编辑</span>
JToolBarHelper::cancel('info.cancel');<span>//</span><span>取消</span>
JToolBarHelper::deleteList('info.delete');<span>//</span><span>删除</span>
JToolBarHelper::trash('info.trash');<span>//</span><span>回收站</span>
JToolBarHelper::divider();<span>//</span><span>分割线</span>
JToolBarHelper::publish('weblinks.publish', 'JTOOLBAR_PUBLISH', <span>true</span>);<span>//</span><span>发布</span>
JToolBarHelper::unpublish('weblinks.unpublish', 'JTOOLBAR_UNPUBLISH', <span>true</span>);<span>//</span><span>取消发布</span>
JToolBarHelper::back();<span>//</span><span>返回</span>
JToolBarHelper::help('JHELP_COMPONENTS_WEBLINKS_LINKS');<span>//</span><span>帮助</span>
5. Other commonly used methods
JString::transcode('中国','utf-8','gb2312');<span>//</span><span>转换编码</span>
JUtility::getToken();<span>//</span><span>用户session ID 等价于JHtml::_('form.token');</span>
JUtility::isWinos();<span>//</span><span>是否win系统 是输出1</span>
JUtility::sendmail('logove#qq.com','yoby','logoove#foxmail.com','主题','这是内容');<span>//</span><span>发送邮件要配置的</span>
JUtility::gethash(<span>$var</span>);<span>//</span><span>32位随机字符</span>
JUtility::return_bytes('1k');<span>//</span><span>转换成字节数 支持g m k</span>
JRequest::getURI();<span>//</span><span>获得当前url</span>
JRequest::getMethod ();<span>//</span><span>提交方式 POST 或GET</span>
JRequest::getbool('i');<span>//</span><span>转换成布尔型</span>
JRequest::getint('i');<span>//</span><span>取整</span>
JRequest::getfloat('i');<span>//</span><span>转换成浮点数</span>
JRequest::getString('i');<span>//</span><span>转成字符串</span>
JRequest::getvar('var',<span>null</span>,'default','array');<span>//</span><span>通用,第二个是默认值,第三个是方法,有GET
//POST FILES COOKIE ENV SERVER 最后一个是数据类型 有array int string float</span>
JRequest::setVar('var',<span>$arr</span>);<span>//</span><span>设置,可以数组或字符</span>
JURI::base();<span>//</span><span>包含administrator绝对路径 参数1是相对路径</span>
JURI::root();<span>//</span><span>根目录,参数1是相对路径</span>
6. Arrays are commonly used, this is the most commonly used
JArrayHelper::arrayUnique(<span>$arr2</span>);<span>//</span><span>去掉重复元素</span>
<span>$obj</span> = <span>new</span><span> stdClass();
</span><span>$obj</span>->qq='280594236'<span>;
JArrayHelper</span>::fromObject(<span>$obj</span>);<span>//</span><span>对象转换数组</span>
JArrayHelper::getValue(<span>$arr</span>,1);<span>//</span><span>获得数组第二个值,也可以是下标</span>
JArrayHelper::toObject(<span>$arr</span>);<span>//</span><span>转换对象</span>
JArrayHelper::toString(<span>$arr</span>,'=',' ');<span>//</span><span>转成字符串,空格隔开,左边key=value</span>
JArrayHelper :: toInteger(<span>$cid</span>);<span>//</span><span>转换变量为整形</span>
There are many other methods, such as database, xml, form generation, etc. These are all important, but there is too much content. I will talk about it later when I have the opportunity. Basically, these methods today are all commonly used. , if you need to know more, you need to study the API content yourself, or read the core code yourself. I have summarized it here, which can reduce your reading time. The comments at the back are very detailed. If you don’t understand, you can leave a message below. Joomla is A very excellent CMS, but it is not popular in China. Dedecms and discuz have more users. I will study it next time I have time. If you like CMS, don’t miss it.
(yoby original)
What is the transfer limit of Alipay?
langbar.chm
You need permission from admin to make changes to this file
Introduction to parametric modeling software
How to register on Matcha Exchange
What are the types of traffic?
How to restore mysql database
The difference between static web pages and dynamic web pages
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
