Sr. PHP Programmer Question:
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How can we get the IP address of the client?


This question might show an interview how playful and creative the candidate is because there are many options. $_SERVER["REMOTE_ADDR"]; is the easiest solution, but you can write x line scripts for this question.

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What is the difference between $var and $$var in PHP?The value of the variable input is a string 1,2,3,4,5,6,7. How would you get the sum of the integers contained inside input?