Access parent’s parent variable and Access interface constant variable

// Access parent's parent variable
class Parent1 {
 const PARENT_NAME = "ramesh Song";
 const PARENT_AGE = "31";
 const PARENT_EMAIL = "ilovephp@gmail.com";
 protected $_normal_val = "HeHeHeHe";
}

class Parent2 extends Parent1 {
 public function __construct(){}
}

class Child extends Parent2 {
 public function __construct(){}

 public function getParentName(){
  return parent::PARENT_NAME;
 }

 public function getNormalVal(){
  return $this->_normal_val;
 }
}

$c = new Child();
echo $c->getParentName();
echo "br";
echo $c->getNormalVal();

/*
Output :
 ramesh Song
 HeHeHeHe
*/

// Access interface constant variable

interface Parent3 {
 const PARENT_NAME = "ramesh Song";
 const PARENT_AGE = "31";
 const PARENT_EMAIL = "ilovephp@gmail.com";
 //protected $_normal_val = "HeHeHeHe"; Error : Interfaces may not include member variables
}

class Parent4 implements Parent3 {
 public function __construct(){}

 public function getParentName(){
  //return parent::PARENT_NAME;  Error : current class scope has no parent
  return self::PARENT_NAME;
 }
}

class Child2 extends Parent4 {
 public function __construct(){}

 public function getParentName(){
  return parent::PARENT_NAME;

 }
 public function getParentAge(){
  return parent::PARENT_AGE;
 }
}

$d = new Parent4();
echo $d -> getParentName();
echo "br";
$e = new Child2();
echo $e->getParentName();
echo "br";
echo $e->getParentAge();

/*
Output :
 ramesh Song
 ramesh Song
 31
*/

Serialize with Jquery and Unserialize with PHP

//JS (Jquery)

var form = document.getElememtById('myForm');

var serializedData = $(form).serialize();

$.post(
 'getSerializedData.php',
 {data:serializedData},
 function(data){
 }
)

// PHP

$serializedData = $_POST['data'];
$unserializedData = array();

parse_str($unserializedData,$serializedData);

print_r($unserializedData);

Get Browser Information Using PHP

function getBrowser(){
    $u_agent = $_SERVER['HTTP_USER_AGENT'];
    $bname = 'Unknown';
    $platform = 'Unknown';
    $version= "";

    //First get the platform?
    if (preg_match('/linux/i', $u_agent)) {
        $platform = 'linux';
    }
    elseif (preg_match('/macintosh|mac os x/i', $u_agent)) {
        $platform = 'mac';
    }
    elseif (preg_match('/windows|win32/i', $u_agent)) {
        $platform = 'windows';
    }

    // Next get the name of the useragent yes seperately and for good reason
    if(preg_match('/MSIE/i',$u_agent) && !preg_match('/Opera/i',$u_agent))
    {
        $bname = 'Internet Explorer';
        $ub = "MSIE";
    }
    elseif(preg_match('/Firefox/i',$u_agent))
    {
        $bname = 'Mozilla Firefox';
        $ub = "Firefox";
    }
    elseif(preg_match('/Chrome/i',$u_agent))
    {
        $bname = 'Google Chrome';
        $ub = "Chrome";
    }
    elseif(preg_match('/Safari/i',$u_agent))
    {
        $bname = 'Apple Safari';
        $ub = "Safari";
    }
    elseif(preg_match('/Opera/i',$u_agent))
    {
        $bname = 'Opera';
        $ub = "Opera";
    }
    elseif(preg_match('/Netscape/i',$u_agent))
    {
        $bname = 'Netscape';
        $ub = "Netscape";
    }

    // finally get the correct version number
    $known = array('Version', $ub, 'other');
    $pattern = '#(?' . join('|', $known) .
    ')[/ ]+(?[0-9.|a-zA-Z.]*)#';
    if (!preg_match_all($pattern, $u_agent, $matches)) {
        // we have no matching number just continue
    }

    // see how many we have
    $i = count($matches['browser']);
    if ($i != 1) {
        //we will have two since we are not using 'other' argument yet
        //see if version is before or after the name
        if (strripos($u_agent,"Version") < strripos($u_agent,$ub)){             $version= $matches['version'][0];         }         else {             $version= $matches['version'][1];         }     }     else {         $version= $matches['version'][0];     }     // check if we have a number     if ($version==null || $version=="") {$version="?";}     return array(         'userAgent' => $u_agent,
        'name'      => $bname,
        'version'   => $version,
        'platform'  => $platform,
        'pattern'    => $pattern
    );
}

Add and Remove HTML elements using javascript