joomla2.5中常用類總結(jié)研究，joomla2.5類總結(jié)

　　上一文只研究了JImage類,今天繼續(xù)其他常用的joomla內(nèi)置類,個(gè)人是從常用角度來寫的,如果PHP本身函數(shù)比起Joomla內(nèi)置類用起來更方便的,我就濾過不說,如果你實(shí)在想用,自己去查吧,個(gè)人覺得,無論多優(yōu)秀的方法,如果PHP自帶函數(shù)也能很好解決,那么用PHP內(nèi)置函數(shù)是最好的,學(xué)習(xí)PHP首先就是學(xué)好內(nèi)置函數(shù),好了,接下來詳細(xì)講解那些常用的類以及方法.

　　1.文檔類,用來對當(dāng)前頁面元素的頭部作為主要操作.

<span>$document</span> = JFactory::<span>getDocument();
</span><span>$document</span>->addScript('1.js');<span>//</span><span>添加js文件</span>
<span>$document</span>->addScriptDeclaration('alert(1)');<span>//</span><span>添加js代碼</span>
<span>$document</span>->addStyleDeclaration(); <span>//</span><span>css</span>
<span>$document</span>->addStyleSheet('1.css'<span>);
</span><span>$document</span>->setMetaData('description','關(guān)鍵字');<span>//</span><span>設(shè)置描述或關(guān)鍵字</span>
<span>$document</span>->setCharset('utf-8'<span>);
</span><span>$document</span>->setTitle('標(biāo)題');

　　2.文件操作,需要導(dǎo)入jimport('joomla.filesystem.file');

<span>$j</span> = <span>new</span><span> JFile();
getExt(</span><span>$file</span>) <span>//</span><span>獲取擴(kuò)展名不含.</span>
getName(<span>$file</span>) <span>//</span><span>獲得文件名</span>
exists(<span>$file</span>) <span>//</span><span>文件是否存在</span>
delete(<span>$file</span>) <span>//</span><span>刪除文件</span>
<span>copy</span>(<span>$old</span>,<span>$new</span>) <span>//</span><span>復(fù)制</span>
upload(<span>$src</span>) <span>//</span><span>上傳</span>
write(<span>$file</span>) <span>//</span><span>寫文件</span>
read(<span>$file</span>)  <span>//</span><span>讀文件</span>
move(<span>$old</span>,<span>$new</span>) <span>//</span><span>移動文件</span>

這些方法在文件讀寫,圖片文件上傳,等都有用處.

　　3.文件夾操作,jimport('joomla.filesystem.folder');一般我們導(dǎo)入的時(shí)候把文件文件夾都導(dǎo)入,很多時(shí)候都會用到

JFolder::create(<span>$path</span>,777) <span>//</span><span>創(chuàng)建文件夾,支持多層</span>
JFolder::delete(<span>$path</span>)  <span>//</span><span>刪除文件夾,可以包含文件</span>
JFolder::exists(<span>$path</span>)  <span>//</span><span>檢測文件夾是否存在</span>
JFolder::<span>copy</span>(<span>$pathold</span>,<span>$pathnew</span>) <span>//</span><span>復(fù)制文件夾</span>
JFolder::files(<span>$path</span>) <span>//</span><span>列出文件夾下面文件的數(shù)組</span>
JFolder::folders(<span>$path</span>) <span>//</span><span>列出文件夾下面文件夾的數(shù)組</span>

這里說一下::是靜態(tài)方法,有很多類是支持靜態(tài)方法的;

　　4.圖標(biāo)生成類,用來生成后臺的小圖標(biāo),常用的保存就是之一.

JToolBarHelper::title(JText::_('添加個(gè)人信息'), 'weblinks.png');<span>//</span><span>標(biāo)題</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>保存關(guān)閉</span>
JToolBarHelper::editList('info.edit');<span>//</span><span>編輯</span>
JToolBarHelper::cancel('info.cancel');<span>//</span><span>取消</span>
JToolBarHelper::deleteList('info.delete');<span>//</span><span>刪除</span>
JToolBarHelper::trash('info.trash');<span>//</span><span>回收站</span>
JToolBarHelper::divider();<span>//</span><span>分割線</span>
JToolBarHelper::publish('weblinks.publish', 'JTOOLBAR_PUBLISH', <span>true</span>);<span>//</span><span>發(fā)布</span>
JToolBarHelper::unpublish('weblinks.unpublish', 'JTOOLBAR_UNPUBLISH', <span>true</span>);<span>//</span><span>取消發(fā)布</span>
JToolBarHelper::back();<span>//</span><span>返回</span>
JToolBarHelper::help('JHELP_COMPONENTS_WEBLINKS_LINKS');<span>//</span><span>幫助</span>

　　5.常用其他方法

JString::transcode('中國','utf-8','gb2312');<span>//</span><span>轉(zhuǎn)換編碼</span>
JUtility::getToken();<span>//</span><span>用戶session ID 等價(jià)于JHtml::_('form.token');</span>
JUtility::isWinos();<span>//</span><span>是否win系統(tǒng) 是輸出1</span>
JUtility::sendmail('logove#qq.com','yoby','logoove#foxmail.com','主題','這是內(nèi)容');<span>//</span><span>發(fā)送郵件要配置的</span>
JUtility::gethash(<span>$var</span>);<span>//</span><span>32位隨機(jī)字符</span>
JUtility::return_bytes('1k');<span>//</span><span>轉(zhuǎn)換成字節(jié)數(shù) 支持g m k</span>
JRequest::getURI();<span>//</span><span>獲得當(dāng)前url</span>
    JRequest::getMethod ();<span>//</span><span>提交方式 POST 或GET</span>
    JRequest::getbool('i');<span>//</span><span>轉(zhuǎn)換成布爾型</span>
    JRequest::getint('i');<span>//</span><span>取整</span>
    JRequest::getfloat('i');<span>//</span><span>轉(zhuǎn)換成浮點(diǎn)數(shù)</span>
    JRequest::getString('i');<span>//</span><span>轉(zhuǎn)成字符串</span>
    JRequest::getvar('var',<span>null</span>,'default','array');<span>//</span><span>通用,第二個(gè)是默認(rèn)值,第三個(gè)是方法,有GET
    //POST FILES COOKIE ENV SERVER  最后一個(gè)是數(shù)據(jù)類型 有array int string float</span>
    JRequest::setVar('var',<span>$arr</span>);<span>//</span><span>設(shè)置,可以數(shù)組或字符</span>
    JURI::base();<span>//</span><span>包含administrator絕對路徑 參數(shù)1是相對路徑</span>
    JURI::root();<span>//</span><span>根目錄,參數(shù)1是相對路徑</span>

　　6.數(shù)組常用,這個(gè)是最常用的

JArrayHelper::arrayUnique(<span>$arr2</span>);<span>//</span><span>去掉重復(fù)元素</span>
    <span>$obj</span> = <span>new</span><span> stdClass();
    </span><span>$obj</span>->qq='280594236'<span>;
    JArrayHelper</span>::fromObject(<span>$obj</span>);<span>//</span><span>對象轉(zhuǎn)換數(shù)組</span>
    JArrayHelper::getValue(<span>$arr</span>,1);<span>//</span><span>獲得數(shù)組第二個(gè)值,也可以是下標(biāo)</span>
    JArrayHelper::toObject(<span>$arr</span>);<span>//</span><span>轉(zhuǎn)換對象</span>
    JArrayHelper::toString(<span>$arr</span>,'=',' ');<span>//</span><span>轉(zhuǎn)成字符串,空格隔開,左邊key=value</span>
    JArrayHelper :: toInteger(<span>$cid</span>);<span>//</span><span>轉(zhuǎn)換變量為整形</span>

其他還有很多的方法,比如數(shù)據(jù)庫,xml,表單生成等等,這些說起來都很重要,不過內(nèi)容過多,在后邊有機(jī)會再講,今天的這些方法,基本上來說都很常用,需要了解更多的你需要自己去研究api內(nèi)容,或者自己讀核心代碼,我在這里總結(jié)出來,可以減少你去閱讀時(shí)間,后邊的注釋說明很詳細(xì),不懂的可以在下面留言,joomla是一款非常優(yōu)秀的CMS,不過國內(nèi)并不流行,dedecms和discuz用戶量更大,下次有時(shí)間我也會去研究一下的,喜歡cms的不要錯(cuò)過了.

(yoby 原創(chuàng))