Senior PHP Programmer

Like a constructor function you can define a destructor function using function __destruct(). You can release all the resources with-in a destructor.

Once you defined your class, then you can create as many objects as you like of that class type. Following is an example of how to create object using new operator.

$physics = new Books;

$maths = new Books;

$chemistry = new Books;

exit() function is used to stop the execution of a page

Using getFile() method of Exception class which returns source filename.

Function definitions in child classes override definitions with the same name in parent classes. In a child class, we can modify the definition of a function inherited from parent class.

Its simplest function mysql_close PHP provides to close a database connection. This function takes connection resource returned by mysql_connect function. It returns TRUE on success or FALSE on failure.

bool mysql_close ( resource $link_identifier );

If a resource is not specified then last opend database is closed.

PEAR is a framework and distribution system for reusable PHP components. The project seeks to provide a structured library of code, maintain a system for distributing code and for managing code packages, and promote a standard coding style.

PEAR is broken into three classes: PEAR Core Components, PEAR Packages, and PECL Packages. The Core Components include the base classes of PEAR and PEAR_Error, along with database, HTTP, logging, and e-mailing functions. The PEAR Packages include functionality providing for authentication, networking, and file system features, as well as tools for working with XML and HTML templates.

Yes I can create a class in PHP

There is a good page in the php manual on the subject, in short mysql_pconnect() makes a persistent connection to the database which means a SQL link that do not close when the execution of your script ends. mysql_connect()provides only for the databasenewconnection while using mysql_pconnect , the function would first try to find a (persistent) link that's already open with the same host, username and password. If one is found, an identifier for it will be returned instead of opening a new connection... the connection to the SQL server will not be closed when the execution of the script ends. Instead, the link will remain open for future use.

Object orientation is a software/Web development methodology that is based on the modeling a real world system. An object is the core concept involved in the object orientation. An object is the copy of the real world enity. An object oriented model is a collection of objects and its inter-relationships

Using getMessage() method of Exception class which returns the message of exception.

The preg_split() function operates exactly like split(), except that regular expressions are accepted as input parameters for pattern.

$my_qry = mysql_query("SELECT * FROM `users` WHERE `u_id`='1'; ");

while($result = mysql_fetch_array($my_qry))

{

echo $result['First_name'.]."

";

}

The trim() function removes whitespaces or other predefined characters from both sides of a string.

PHP provides a special function called __construct() to define a constructor. You can pass as many as arguments you like into the constructor function.

The enctype attribute determines how the form-data should be encoded when submitting it to the server. We need to set enctype as "multipart/form-data" when we are using a form for uploading files

The date() function provides you with a means of retrieving the current date and time, applying the format integer parameters indicated in your script to the timestamp provided or the current local time if no timestamp is given. In simplified terms, passing a time parameter is optional - if you don't, the current timestamp will be used.

The date() function returns a formatted string representing a date. You can exercise an enormous amount of control over the format that date() returns with a string argument that you must pass to it.

$wed= 1;

$day = ($wed==1) ? 'today' : 'tomorrow';

// $day is now set to 'today'

Companies often ask about the ternary operator (?). which is simply a shorthand for if else statements.