Link This Page To Your Website Chat     
R4R
Right Place For Right Person TM

What is the difference b/w $i and $$i?

previous previous previous
Question:
What is the difference b/w $i and $$i?

Question:What is the difference b/w $i and $$i?


Answer
The main difference b/n $i and $$i is that $i is an variable where $$i is an reference variable. Example: $variable="welcome"; $welcome="abhi"; <?php echo $variable; echo $$variable; ?> Output: $variable=welcome; $$variable=abhi;

By:Vivek
Date:

What is the difference b/w $i and $$i?

Post Your Answers

User Name:
Answers:

Related Links

  1. Write some array sort functions available in php ?
  2. How to encrypt the password in PHP?
  3. Which pre-defined classes in php ?
  4. What is the difference b/w unlink and unset ?
  5. What do you understand about PHP accelerator ?
  6. How to get path of php.ini with a PHP script?
  7. Output of the code? $objM = new M(); // Where, M is a class $objN = $objM;
  8. How to distinguish b/n PHP and HTML??
  9. How we use ceil() and floor() function in PHP?
  10. What is the significance of destructor in PHP?
  11. What is the different b/w session and cookies in php?
  12. What is the answer of following code echo 1< 2 and echo 1 >2 ?
  13. What is the difference b/w isset and empty?
  14. Can i convert PHP code into JAVA code?if yes,how?
  15. Tell how we can run PHP in command line?
  16. What do you understand about Magic Code in PHP?
  17. How echo()is differ than Print()in PHP?
  18. what are the constant value in PHP?can we write them without $ symbol?
  19. What is the main difference b/w include_once() and require_once() in PHP?
  20. How can we find out the name of the current executing file?
  21. How we use copy() and move() file uploading functions in PHP?
  22. Tell me default session time in PHP and how can I change it?
  23. Tell me how to use COM components in PHP?
  24. What do you understand about pear in PHP?
  25. Which type of inheritance exists in PHP?
  26. How we use ereg_replace() and eregi_replace()in PHP?
  27. How we can get the value of current session id?
  28. How we can increase the execution time of a PHP script?
  29. In PHP can I get the browser properties?
  30. How function strstr and stristr both work in PHP?
  31. What do you understand by nl2br()?
  32. Can I develop our own PHP extension?if yes,how?
  33. Can we submit a form without submit button?
  34. What do you understand about Implode and Explode functions?
  35. How you can differentiate abstract class and interface?
  36. What do you understand about Joomala in PHP?
  37. How can we create a database using PHP and myqsl?
  38. How we can upload videos using PHP?
  39. How do you understand about stored procedure,Triggers and transaction in php?
  40. What function we used to change timezone from one to another ?
  41. Why is PHP-MySQL used for web Development?
  42. How to print \ in php with out using . or *?.
  43. How you differentiate among sort(),assort() and Ksort()?
  44. How we use array_search() in PHP?
  45. How session will work when we disable cookies of client browser?
  46. PHP means? uses of PHP? types of PHP? explain PHP?
  47. how can we connect more than one database into webpage..

Question:What is the difference b/w $i and $$i?

Back Home Next

New Updates

Topics

Topics
R4R
R4R
R4R
R4R
R4R
R4R
R4R
R4R
   Career || ASK Question || Placement Papers || Interview Question || Mini Project || Aptitude Paper || HR Q&Ans || ContactUS || Post Comments || Read Comments