The San Francisco PHP Meetup Group

Test

From:	Bruce Razban
Sent on:	Tuesday, September 15, 2009 10:10 PM

Dear php-139ers!

I am working on getting Php5 Certification.

When I took the test, I was somewhat surprised by the following questions. I know that these only show in test and not in actual coding in the real world. But, here we go with the test:

1. We have $A and $B and their values are: A is 3 and B is 5. Then they ask what is $A & $B? I thought that this is bit-wise "AND" function, but, the answer of 3 did not work. Is there a single & and is it the logical and?

2. On question 1 above, suppose A and B are arrays, then what will A & B be? (I am relying on my memory for this)

3. What if the function of ^ operator? For example A^B? A and B could be variables, of arrays (Ofcourse with the $ in front of them)?

4. What is the value in decimal of number 12345E10?

5. What is the value in decimal of number 12345E -5?
6. Which of the following statements will work on any installation of PHP?

?> or,

<? Language=PHP5.2 ....

?> //Sorry I am not sure about the exact syntax here.

7. For Array A that contains (2, 3, 4, 5, 6, 7) what does shift 2 do? What does shift -3 do?

8. And a general question: On the push and pop instruction for an array how do we know which end (left of right) is to be considered?

I appreciate it if anyone can answer these.

Thanks.

-Bruce