It's simply the idea that one object can can take on many forms. So in PHP OOP one class "cars" may have two classes that extend it, for example a "Honda" class and a "BMW" class.

public, private and protected. The default is public. Public -> Any class may instantiate the class and call the method or property. Protected -> Only the class itself or inher...

$my_query = mysql_query("SELECT * FROM 'users' WHERE 'id'='1'; "); while($result = mysql_fetch_array($my_query)) { echo $result['First_name']; }

Setting new cookie ============================= Getting Cookie ============================= Updating Cookie ============================= Deleting Cookie =...

Just Follow the Below example::: Eg : var $arr = array('apple', 'grape', 'lemon');

require() includes and evaluates a specific file, while require_once() does that only if it has not been included before (on the same page). So, require_once() is recommended to us...

There are a number, but the big ones people are looking for are: a. PHP 5.0 realised the object model (AKA OOP). b. 5.1 added PDO - for accessing databases. c. 5.3 - added name...

AES_ENCRYPT () and AES_DECRYPT ()

A PHP session cookie is set in the clients browser, on every request the client sends that cookie to the server. PHP then uses that cookie to select the corresponding session infor...

Total 5 types of tables we can create 1. MyISAM 2. Heap 3. Merge 4. InnoDB 5. ISAM 6. BDB MyISAM is the default storage engine as of MySQL 3.23.