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Q:

If the variable $a is equal to 5 and variable $b is equal to character a, what’s the value of $$b?

Answer 100, it’s a reference to existing variable.
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Subject: PHP

Q:

I am trying to assign a variable the value of 0123, but it keeps coming up with a different number, what’s the problem?

Answer PHP Interpreter treats numbers beginning with 0 as octal. Look at the similar PHP interview questions for more numeric problems.
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Subject: PHP

Q:

How do I find out the number of parameters passed into function?

Answer func_num_args() function returns the number of parameters passed in.
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Subject: PHP

Q:

With a heredoc syntax, do I get variable substitution inside the heredoc contents?

Answer Yes
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Subject: PHP

Q:

What’s the difference between accessing a class method via -> and via ::?

Answer :: is allowed to access methods that can perform static operations, i.e. those, which do not require object initialization.
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Subject: PHP

Q:

Where do you expect to be working in five years?

Answer

Why are they asking?


The interviewer wants to find out the following:


  -How committed are you to the career and the company
  -How much do you understand about the career path ahead of you
  -How passionate are you

Approach 
Research the job and the organization structure and relate your career plan and progression with the job posting and progression of the company.

Eg.
I would like to work hard and grow with the company to a respectable position with additional challenges and responsibilities and contributing to success of the company.

Please don't give these answers...
"Doing your Job"
"Working somewhere else"
"No idea"
"I haven’t thought that far ahead"
"Have a family"

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Subject: Career Path and Goals

Q:

How Do You Manage to Balance Career and Family?

Answer

If you're attempting to give an answer that is as unrevealing as possible, try something like this:


  " I have been a dedicated,loyal,hardworking employee throughout my career and nothing in my personal life-family obligations, hobbies, or volunteer work-has ever affected my performance. Nor would I ever expect it to." 

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Subject: Personal Interview