301 Redirection from Multiple Domains

If you have domains: domain1.com, domain2.com and domain3.com and you want to do 301 redirection.
In this case, first:

1. Just host the domain1.com into the server.
2. Park the domain2.com and domain3.com under the domain1.com hosting account. 
3. Then, create a .htaccess file on the domain1.com /public_html folder in the server. 
4. And, the following code into the .htaccess file which is for making 301 redirection (page to page redirection) to domain1.com.

RewriteEngine on
RewriteCond %{HTTP_HOST} .
RewriteCond %{HTTP_HOST} !^www\.domain1\.co\.uk
RewriteRule (.*) http://www.domain1.co.uk/$1 [R=301,L]

PHP Code to Clear the Browser (Local) Cache

PHP Code to Clear the Browser (Local) Cache including Joomla and Wordpress CMS

Insert Multiple Records using Single Query in Joomla

Insert multi-record using single query in Joomla.

 /**
  * Insert the attributes into website.
  *
  * @return boolean If found return true else falase.
  */
 protected function saveAttributes($member_id, $data) 
 {
  // Build the values for multi-row insert.
  $values = array();
  foreach ($data as $attribute_id => $value)
  {
   $values[] = "('".$member_id."','".$attribute_id."','".$value."', '1')";
  }
  $values = implode(',', $values);
  
  // Build the insert query
  $sql = 'INSERT INTO #__bmember_attribute_vals (`mid`, `attribute_id`, `value`, `state`)
    VALUES'.$values;
  
  $db  = $this->getDbo();
  $query = $db->getQuery(true); // Reset the $query variable.
  $db->setQuery($sql);
  $db->query();
 }

Generate the Unique Alias or Unique string in PHP or Joomla

Generate the Unique Alias or Unique string in PHP or Joomla The below code is to check the Alias in joomla 2.8

/**
  * Find unique Alias name if current doesn't exist.
  * @param string $alias
  * 
  * @return string Return the unique alias value.
  */
 protected function getUniqueAlias($alias)
 {
  $alias_ini = $alias;
  $i = 0;
  
  while ($this->isAliasExist($alias))
  {
   $alias = $alias_ini .'-'.++$i;   
  }
  return $alias;
 }
 
 /**
  * Check the 'alais' in the database.
  *
  * @return boolean If found return true else falase.
  */
 protected function isAliasExist($alias) 
 {
  // Initialise variables.
  $db  = $this->getDbo();
  $query = $db->getQuery(true);
  
  $query->select('m.id, m.alias');
  $query->from('#__bmembers m');
  $query->where('m.alias="'.$alias.'"');
  $db->setQuery((string)$query);
  
  $results = $db->loadObjectList();
  
  return (count($results)>0) ? true : false;
 }

To clear $query object, to dump the query and nesting loop in Joomla

To clear the previous values from the query var.

/* This needs to be added while using nesting loop to clear the previous query in Joomla Component Writing. */
$query = $db->getQuery(true);

This is to print the built query or dump query.

/* This is to print the built query or dump query. */
echo $query->dump();

Find the sample query as below;

  $data = array();       
  $query->select('c.id, c.alias, c.title');
  $query->from('#__categories c');
  $query->where('c.alias not in ("admin") and c.extension="com_bmember" and published="1"');
  $query->order('c.title asc');
  $db->setQuery((string)$query);
  $categories = $db->loadObjectList();
  
  if (is_array($categories) && ($categories)>0)
  {
   $i=0;
   foreach ($categories as $category)
   {
    $data[$i]['catid'] = $category->id;
    $data[$i]['category'] = $category->title;
    $data[$i]['attributes'] = array();
    
    $query = $db->getQuery(true); // This needs to be added while using nesting loop to clear the previous query.
    $query->select('af.id, af.attribute, af.alias');
    $query->from('#__bmember_attribute_fields af');
    $query->where('af.catid="'.$category->id.'" and af.state="1"');
    $db->setQuery((string)$query);
    $rows = $db->loadObjectList();
    $query->order('af.attributes asc');
    $i++;
   }
  }

Enable Use Lightbox in Joomla 2.5/3.0

If you decided that you want to have a lightbox on your Joomla site, you probably know what is it about. But, let’s just mention that the Lightbox is a JavaScript technique to display images and content using modal dialogs. Why do you need this? Because it’s clean, nice looking, effective and easy for implementation.
We will learn how to display

•     images in modal popup window
•     external content

First thing we have to do is to add a bit of JavaScript support to our page.
To do this, paste the following code in the top of your main template file (ex. index.php) :

 When you did this, just use the link in the following format in your article or page.

< a href=”my-url” class=”modal”> Image or Text for a popup < /a>

For displaying content in the modal popup window you need a bit more code:

< a 
href="/sample/lightbox.html?map=1&act=3"
 class="modal" rel="{handler: 'iframe', size: {x: 575, y: 300}}">link
 to a modal popup with a dimension of 600px by 300px< /a> 

 It’s pretty much same as displaying images, expect we have “rel” attribute where we are saying that iframe should be used, and we also define exact size of the window were our content will be displayed.

source

SQL_CALC_FOUND_ROWS / FOUND_ROWS() does not work in PHP

$s1 = $sql->query('select SQL_CALC_FOUND_ROWS * from db limit 0, 3');
$s2 = $sql->query('select FOUND_ROWS()');
if($row = $s2->fetch_row()) printf('%d/%d', $s1->num_rows, $row[0]);

Sometime, when we run something analogous to above example on the mysql command line, it would work; but running it from php, it failed. The second query has to "know about" the first one, so for some reason its persistence/memory linking the two queries was getting messed up by the php.

(It turns out that Wordpress uses this type of query to do its pagination - so our larger problem was that the pagination in a wordpress install suddenly stopped working when we moved to php 5.2.6 ... eventually tracked it down to the FOUND_ROWS()).

Just for the sake of posting for people who may run into this in the future... for me it was the php setting "mysql.trace_mode" - this defaulted "on" in 5.2.6 instead of "off" like previously, and for some reason prevents the FOUND_ROWS() from working.

As a "fix", we could either put this in every php page (actually, in a common "include"):

ini_set("mysql.trace_mode", "0");

or add this to the .htaccess:

php_value mysql.trace_mode "0"