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Interview Questions

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Python & Ruby Rail (INTERVIEW QUESTIONS) 1
  What is python?

  It is a scripting language that is simple and has all the advantages of using a high-level programming language. or
Python is an open source language that is getting a lot of attention from the market.Python is an interpreted, high-level programming language, pure object-oriented, and powerful server-side scripting language for the Web.
Python is a good prototype language. In just a few minutes, you can develop prototypes that would take you several hours in other languages.

  Account assignment category means. where do we come acros it. where we specify it.

  we use the account assighnment catagory in account assig. module, first we have to create the account assign catagory then only we can use that model entry to distribute the expenses amongs the various business area or gl expenditer.

  what is CAPTCHA?

 CAPTCHA stands for Completely Automated Public Turing Test to tell Computers and Humans Apart. To prevent spammers from using bots to automatically fill out forms, CAPTCHA programmers will generate an image containing distorted images of a string of numbers and letters. Computers cannot determine what the numbers and letters are from the image but humans have great pattern recognition abilities and will be able to fairly accurately determine the string of numbers and letters. By entering the numbers and letters from the image in the validation field, the application can be fairly assured that there is a human client using it.

  What is difference between require_once(), require(), include()? Because above three function usely use to call a file in another file.

  Difference between require() and require_once(): 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 use when you want to include a file where you have a lot of functions for example. This way you make sure you don't include the file more times and you will not get the "function re-declared" error.
 Difference between require() and include() is that require() produces a FATAL ERROR if the file you want to include is not found, while include() only produces a WARNING.

  how we know browser properties?

 get_browser() attempts to determine the capabilities of the user's browser. This is done by looking up the browser's information in the browscap.ini file.
 echo $_SERVER['HTTP_USER_AGENT'] . " \n";
  $browser = get_browser();
  foreach ($browser as $name => $value) {
  echo "$name $value

  how i can get ip address?

 PHP makes REMOTE_ADDR and REMOTE_HOST available for our use, they live within the SERVER arrays. So:
  REMOTE_ADDR - the IP address of the client
  REMOTE_HOST - the host address of the client, if available

  what is differenc between mysql_connect and mysql_pconnect?

 mysql_connect opens up a database connection every time a page is loaded. mysql_pconnect opens up a connection, and keeps it open across multiple requests.
mysql_pconnect uses less resources, because it does not need to establish a database connection every time a page is loaded.

  What is the difference between echo and print statement?

 echo() can take multiple expressions,Print cannot take multiple expressions.
echo has the slight performance advantage because it doesn't have a return value.
True, echo is a little bit faster.
echo and print are both language constructs and do not (and should not) require parenthesis. The difference is that print returns a value indicating success where echo does not.


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