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1. Name:
   
 
 
 
2. List all the website you worked on:
   
 
 
 
3. What are the differences between GET and POST methods in form submitting?
   
 
 
 
4. How can we get second of the current time using date function?
   
 
 
 
5. How can we find the number of rows in a table using mysql?
   
 
 
 
6. What is the difference between char and varchar data types?
   
 
 
 
7. A select query over a large table runs very slow because of the growing number of entries in that table. What different measures could be taken to improve speed?
   
 
 
 
8. How can we extract string 'abc.com ' from a string 'http://info@a...' using regular _expression of php?
   
 
 
 
9. You have eight balls all of the same size 7 of them weigh the same, and one of them weighs slightly more. How can you find the ball that is heavier by using a balance? what is the lowest number of weighings you do?
   
 
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