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This essay developed out of conversations I've had with several other programmers about why Java smelled suspicious. It's not a critique of Java!
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" Java provides the industry - software companies and customer alike , an opportunity to create a true open computing environment where software is portable,
and customers benefit from increase competition. "
Java and the Future
December 1, 2008-LEJB 3.1: EJB New and Improved!
The EJB 3.0 specification was a huge improvement from what you were used to in the early versions of EJB. Available as an early draft, EJB 3.1 has many more features and is even easier to use.
December 1, 2008-Should Java Assert that Network I/O Can't Occur on the UI Thread?
Doing network I/O on the user interface (UI) thread is bad. Most developers know that and can tell you why; unfortunately, it's still done.
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PHP Interview Question
How I can get IP address of the user?
$ip = $_SERVER['REMOTE_ADDR'];
What is the difference between require and include?
When using require function to embed another file in php, it will give fatal error if the file is not exists. When using include function to embed another file in php, it will give warning if the file is not exists.
How to find the number of elements in an array?
Using count($array) or sizeof($array).
What is ZEND?
ZEND is a PHP language engine, named for its co-creators Zeev Suraski and Andi Gutmans,which handles the compilation and execution of PHP scripts as well as management of the PHP API.
What is Polymorphism?
Polymorphism is a property of object inheritance that enables methods of the same name to performdifferent actions through successive generations of a class definition.
What is the use of Debuggers?
Debugger applications and extensions allow a developer to track the runtime execution of a script highlighting variable values and logic flow. Examples of debugging tools include DBG, APD, and XDebug.
What is .htaccessfile and use of this file?
.htaccess is a apache thing and use for url rewriting and
also used for url redirect.
It also used for hiding folder informaion or file
information on server.
What is difference between $x and $$x ?
This type of variable diclearation is called "Variable variables". Sometimes it is convenient to be able to have variable variable names. That is, a variable name which can be set and used dynamically. A normal variable is set with a statement such as:
$x = 'hello';
A variable variable takes the value of a variable and
treats that as the name of a variable. In the above
example, hello, can be used as the name of a variable by
using two dollar signs. i.e.
$$x = 'world';
At this point two variables have been defined and stored in the PHP symbol tree: $a with contents "hello" and $hello with contents "world". Therefore, this statement
echo "$x ${$x}";
produces the exact same output as:
echo "$a $hello";
i.e. they both produce: hello world.
what is the diference between php4 and php5
php4-zend engine are added
php5-oops concepts are added