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 Mindspace 

1. Basic PHP  - PHP 

2. Array Functions

3. MySQL Basic - Views, Triggers

4. Array Related Question - Array - Array

5. Average - AVG()

6. Traversing the array in PHP

7. Difference between session & cookies

8. Difference between explode & implode  -  Difference 

9. Logical Programs on an Array

11. An array is given like $arr=array(1,2,3,4,5) and we have to echo a string as 1@2@3@4@5

12. There were two arrays like $a and $b. We have to fetch the common elements and have to add into the third array i.e., $c

13. Fetch data from two tables using join SQL query.

14. Different between having and where in SQL query

15. Fetching data from database using group by command and sum() function

16. Fibonacci Series

17. Reverse Number

18. Leap Year

20. Pattern 

22. PHP - session, get post method