Code hữu ích sử dụng trong lập trình Joomla

[support]

Đôi khi bạn muốn tracking các biến và k0 thể theo dõi kết quả của nó, hãy sử dụng chức năng ghi để theo dõi giá trị biến bất kỳ.

Code:

function write($the_string )  //Write to a log file for checking what has been done
{
    $stored_file =JPATH_SITE.DS.'images'.DS.'rssfeed'.DS.'cached'.DS.'logged.txt';   //Outside stored image
    $fh = @fopen($stored_file, 'a+' );
    if( $fh )
    {
        $the_string .="\n";
        fputs( $fh, $the_string, strlen($the_string));
        fclose( $fh );
        return( true );
    }
    else
    {
        return( false );
    }
}

[support]

Đang xử lý code sized ảnh cho RSS Feed. Dự định là sized ảnh ngay khi xử lý text nhưng k0 ổn.

Giải pháp là sử dụng dạng On the fly như sau:

Code:

thumb_img.php?image_link

[viet4777]

Lấy Itemid hiện thời:

Code:

$itemid =  @JSite::getMenu()->getActive()->id;

[support]

Tham khảo từ: http://www.php.net/manual/en/function.pr....php#93694

Code này đã fixed 1 số lỗi khai báo biến.

Code:

<?php
/**
* Find and close unclosed xml tags
**/
function close_tags($text) {
    $patt_open    = "%((?<!</)(?<=<)[\s]*[^/!>\s]+(?=>|[\s]+[^>]*[^/]>)(?!/>))%";
    $patt_close    = "%((?<=</)([^>]+)(?=>))%";
    if (preg_match_all($patt_open,$text,$matches))
    {
        $m_open = $matches[1];
        if(!empty($m_open))
        {
            preg_match_all($patt_close,$text,$matches2);
            $m_close = $matches2[1];
            if (count($m_open) > count($m_close))
            {
                $c_tags = array();
                $m_open = array_reverse($m_open);
        foreach ($m_close as $tag) $c_tags[$tag] = isset($c_tags[$tag])? $c_tags[$tag]++:1;
                foreach ($m_open as $k => $tag) {
            $c_tags[$tag] = isset($c_tags[$tag])? $c_tags[$tag]--:0;
            if ($c_tags[$tag]--<=0) $text.='</'.$tag.'>';
            }
            }
        }
    }
    return $text;
}


$text = "<b>Hello</b>.<p>Hello <br /><strong>xy.<h1>jhjkhkj";
echo htmlspecialchars($text) . '<br />';
echo htmlspecialchars(close_tags($text)). '<br />';
echo close_tags($text);
?>

---

Tham khảo thêm:
PHP: Parsing HTML to find Links
http://www.the-art-of-web.com/php/parse-links/

http://www.the-art-of-web.com/php/

http://www.web-development-blog.com/arch...match_all/

---

Ultimate Regular Expression for HTML tag parsing with PHP

Code:

$regex = "/<\/?\w+((\s+(\w|\w[\w-]*\w)(\s*=\s*(?:\".*?\"|'.*?'|[^'\">\s]+))?)+\s*|\s*)\/?>/i";

PHP function for cleaning up HTML and JavaSctipt code - year 2006

Code:

<?php

//Function to seperate multiple tags one line
function fix_newlines_for_clean_html($fixthistext)
{
    $fixthistext_array = explode("\n", $fixthistext);
    foreach ($fixthistext_array as $unfixedtextkey => $unfixedtextvalue)
    {
        //Makes sure empty lines are ignores
        if (!preg_match("/^(\s)*$/", $unfixedtextvalue))
        {
            $fixedtextvalue = preg_replace("/>(\s|\t)*</U", ">\n<", $unfixedtextvalue);
            $fixedtext_array[$unfixedtextkey] = $fixedtextvalue;
        }
    }
    return implode("\n", $fixedtext_array);
}

function clean_html_code($uncleanhtml)
{
    //Set wanted indentation
    $indent = "    ";


    //Uses previous function to seperate tags
    $fixed_uncleanhtml = fix_newlines_for_clean_html($uncleanhtml);
    $uncleanhtml_array = explode("\n", $fixed_uncleanhtml);
    //Sets no indentation
    $indentlevel = 0;
    foreach ($uncleanhtml_array as $uncleanhtml_key => $currentuncleanhtml)
    {
        //Removes all indentation
        $currentuncleanhtml = preg_replace("/\t+/", "", $currentuncleanhtml);
        $currentuncleanhtml = preg_replace("/^\s+/", "", $currentuncleanhtml);
        
        $replaceindent = "";
        
        //Sets the indentation from current indentlevel
        for ($o = 0; $o < $indentlevel; $o++)
        {
            $replaceindent .= $indent;
        }
        
        //If self-closing tag, simply apply indent
        if (preg_match("/<(.+)\/>/", $currentuncleanhtml))
        {
            $cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;
        }
        //If doctype declaration, simply apply indent
        else if (preg_match("/<!(.*)>/", $currentuncleanhtml))
        {
            $cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;
        }
        //If opening AND closing tag on same line, simply apply indent
        else if (preg_match("/<[^\/](.*)>/", $currentuncleanhtml) && preg_match("/<\/(.*)>/", $currentuncleanhtml))
        {
            $cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;
        }
        //If closing HTML tag or closing JavaScript clams, decrease indentation and then apply the new level
        else if (preg_match("/<\/(.*)>/", $currentuncleanhtml) || preg_match("/^(\s|\t)*\}{1}(\s|\t)*$/", $currentuncleanhtml))
        {
            $indentlevel--;
            $replaceindent = "";
            for ($o = 0; $o < $indentlevel; $o++)
            {
                $replaceindent .= $indent;
            }
            
            $cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;
        }
        //If opening HTML tag AND not a stand-alone tag, or opening JavaScript clams, increase indentation and then apply new level
        else if ((preg_match("/<[^\/](.*)>/", $currentuncleanhtml) && !preg_match("/<(link|meta|base|br|img|hr)(.*)>/", $currentuncleanhtml)) || preg_match("/^(\s|\t)*\{{1}(\s|\t)*$/", $currentuncleanhtml))
        {
            $cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;
            
            $indentlevel++;
            $replaceindent = "";
            for ($o = 0; $o < $indentlevel; $o++)
            {
                $replaceindent .= $indent;
            }
        }
        else
        //Else, only apply indentation
        {$cleanhtml_array[$uncleanhtml_key] = $replaceindent.$currentuncleanhtml;}
    }
    //Return single string seperated by newline
    return implode("\n", $cleanhtml_array);    
}
?>

[support]

Khái niệm về LT trong Joomla:

http://www.mightyextensions.com/knowledg...t-mvc-ajax

---

Kiểm tra host của 1and1.com
http://links.1and1faqs.com/check_info.php5

[gmail2]

Default youtube video thumbnail for video:

<a href="http://www.youtube.com/v/UpDtDsNJnSo&amp;rel=0&amp;fs=1" target="_blank">http://www.youtube.com/v/UpDtDsNJnSo&amp;rel=0&amp;fs=1</a>

- _http://www.youtube.com/watch?v=UpDtDsNJnSo&feature=player_embedded
is -_http://img.youtube.com/vi/UpDtDsNJnSo/default.jpg
You can get more at: http://www.bernzilla.com/item.php?id=848

[support]

List all of file with filetype in the directory.

Code:

function listFiles( $from = '.', $filetype='mp3')
{
    if(! is_dir($from))
        return false;
    
    $files = array();
    $dirs = array( $from);
    while( NULL !== ($dir = array_pop( $dirs)))
    {
        if( $dh = opendir($dir))
        {
            while( false !== ($file = readdir($dh)))
            {
                if( $file == '.' || $file == '..')
                    continue;
                $path = $dir . '/' . $file;
/*                if( is_dir($path))
                    $dirs[] = $path;
                else
                    $files[] = $path;
*/
        $ext = substr(strrchr($file, '.'), 1);
                if( !is_dir($path) && $ext==$filetype)
                    $files[] = basename($path);
            }
            closedir($dh);
        }
    }
    sort($mp3files);
    return $files;
}

[gmail2]

Hiển thị cảnh báo trong Joomla: http://docs.joomla.org/Display_error_mes...nd_notices

Có thể ứng dụng để hiển thị các biến (giá trị, kiểu ...). Cách để track 1 biến là sử dụng hàm print_r. Để in sang dạng text, sử dụng câu lệnh:

Code:

<pre>
<?php
$a = array ('a' => 'apple', 'b' => 'banana', 'c' => array ('x', 'y', 'z'));
print_r ($a);
?>
</pre>

whil show out:
<pre>
Array
(
    [a] => apple
    [b] => banana
    [c] => Array
        (
            [0] => x
            [1] => y
            [2] => z
        )
)
</pre>

A better way is:
$text = print_r ($a, true);

More at http://php.net/manual/en/function.print-r.php

---

Ứng dụng JDate:

Code:

JFactory::getDate()->toFormat('%a %d %b %Y - %H:%M');
Ngày trong tuần:
$dayofweek = JFactory::getDate()->toFormat('%u');
$dayofweek is 1 for Monday -> 7 for Sunday.
Nếu sử dụng array: $dayofweek = $dayofweek - 1;
0 - Monday; ... 6 - Sunday.

Chi tiết mã cho toFormat xem tại http://vn2.php.net/strftime

[support]

Call a plugin/plugins in a module: - only for 'content'

Code:

    $articledata = JTable::getInstance('content'); //Get the table
    $articledata ->text = 'your content...'; //Prepare your content
    $dispatcher =JDispatcher::getInstance();
    $pparams =new JParameter('');     //parameter type
    
    JPluginHelper::importPlugin('content');
    $results = $dispatcher->trigger('onPrepareContent', array ($articledata,$params, 0));
    //$dispatcher->trigger('onPrepareContent', array(&$item, &$pparams, $limitstart));

    //Output
    echo $articledata->text;

///////////////////////////////////////*****************************/
Or very simple code is:

$content = JHTML::_('content.prepare', $content);

Đã ứng dụng code trên để viết thành Joomla 1.5.x module. Download at here or at http://kulkul.xahoihoctap.net/kho-tai-li...info&id=19

[support]

Google Weather API: http://www.googleapihelp.com/2009/08/goo...r-api.html

Yahoo Weather API: http://developer.yahoo.com/weather/

Code xử lý file mp3: http://getid3.org/ và http://www.sourcerally.net/Scripts/20-PHP-MP3-Class

Hợp tuyển các scripts: http://www.sourcerally.net/