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Q:

What is PHP's mysqli Extension?

Answer

The mysqli extension , or as it is sometimes known, the MYSQL improved extension ,was developed to take advantage of new features found in MYSQL systems versions 4.1.3 and later.

The mysqli extension has a number of benfits,the key enhancements over the mysql extension being:
=> Object-oriented interface
=> Support for prepared statements
=> Support for multiple statements
=> Support for transactions
=> Enhanced debugging capabilities
=> Embedded server support

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Subject: PHP

0 3986
Q:

How would you automatically transfer your visitors to a new web page?

Answer

- You can do it with the help of meta tag mentioned below: 


<META HTTP-EQUIV="Refresh" CONTENT="2"; URL="https://www.yourname.com"> 


- Place this tag between <HEAD></HEAD> . 


- It will load yousite.com in 2 seconds.

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Subject: Web Technology

1 3984
Q:

What is the difference between characters 23 and x23?

Answer The first one is octal 23, the second is hex 23
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Subject: PHP

0 3975
Q:

Where is the reference stored?

A) stack B) heap
C) queue D) None
 
Answer & Explanation Answer: A) stack

Explanation:

Referencee is stored in stack

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Filed Under: C++

1 3951
Q:

What is a Wrapper class?

Answer

Wrapper classes wrap primitive values in a class and offers utility to access them through objects. Some of the primitive wrapper data types are:


Byte, short, int, long, float, double, char, Boolean.


Example: 


Create a class name VectorAdd to populate it with integer values using the add(int, object) method.


public class VectorAdd


{


       public static void main(String argv[])


       {


             Vector v = new Vector();


             v.add(0,new Integer(10));


             v.add(1,new Integer(20));


             v.add(2,new Integer(30));


             for(int i=0; i < v.size();i ++)


             {


                  Integer iw =(Integer) v.get(i);


                  System.out.println(iw);


             }


       }


}

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Subject: C++

0 3950
Q:

What is a DB2 bind?

Answer

A DB2 bind is a process that builds an access path to DB2 tables. 

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Subject: Mainframe Interview

0 3933
Q:

What are three ways to reduce page load time?

Answer

There are many answers here: Reduce image sizes, remove unnecessary widgets, HTTP compression, put CSS at the top and script references at the bottom or in external files, reduce lookups, minimize redirects, caching, etc.

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Subject: Application Development

4 3932
Q:

Why static methods cannot access non static variables or methods?

Answer

A static method cannot access non static variables or methods because static methods doesnt need the object to be accessed. So if a static method has non static variables or non static methods which has instantiated variables they will no be intialized since the object is not created and this could result in an error.

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Subject: Java

9 3910