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Zend 200-710 Exam - Topic 9 Question 93 Discussion

After performing the following operations:$a = array('a', 'b', 'c');$a = array_keys(array_flip($a));What will be the value of $a?
C) array('a', 'b', 'c')
A) array('c', 'b', 'a')
B) array(2, 1, 0)
D) None of the above

Zend 200-710 Exam - Topic 9 Question 93 Discussion

Actual exam question for Zend's 200-710 exam
Question #: 93
Topic #: 9
[All 200-710 Questions]

After performing the following operations:

$a = array('a', 'b', 'c');

$a = array_keys(array_flip($a));

What will be the value of $a?

Show Suggested Answer Hide Answer
Suggested Answer: C

by Brynn at Aug 02, 2025, 10:26 PM

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Dominga
8 months ago
I'm pretty sure it's none of the above.
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Carmela
8 months ago
I think it's array('c', 'b', 'a').
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Nguyet
8 months ago
Wait, how does that even work?
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Janae
8 months ago
No way, it's array('a', 'b', 'c').
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Millie
9 months ago
It's definitely array(2, 1, 0).
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Frederick
9 months ago
I'm leaning towards option C, but I feel like I might be mixing up the operations. What if it ends up being something else?
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Derick
9 months ago
If I remember correctly, array_flip will reverse the keys and values, so I think the final array will be in reverse order.
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Margurite
9 months ago
I remember practicing a similar question where array_keys was used, but I can't recall the exact order of elements after flipping.
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Dahlia
10 months ago
I think the array_flip function will switch the keys and values, but I'm not sure how that affects the final output.
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Linwood
10 months ago
I'm a bit confused on the array_flip() and array_keys() part. I'll need to review those functions before I can confidently answer this.
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Elly
10 months ago
I think I've got this. array_flip() creates a new array with the keys and values flipped, and then array_keys() returns the keys of that new array. So the final result should be the original array in reverse order.
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Enola
10 months ago
Okay, let's see. First, we create an array 'a' with 'a', 'b', and 'c'. Then we use array_flip() and array_keys() to... wait, what does that do again?
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Julio
10 months ago
Hmm, this looks like a tricky one. I'll need to think it through step-by-step.
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Madalyn
11 months ago
C'mon, this is easy! The answer is C. The original array is just returned as is after the operations.
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Margurite
12 months ago
I believe the answer is B) array(2, 1, 0)
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Vi
12 months ago
I think the answer is A) array('c', 'b', 'a')
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Lavonda
12 months ago
Haha, this is a classic one! I remember learning about this in my PHP class. The answer is definitely B.
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Francesco
11 months ago
I think the answer is A.
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Ciara
11 months ago
Actually, it's B. The keys will be re-indexed in reverse order.
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Shawnee
11 months ago
I think the answer is A.
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Carli
1 year ago
I think the answer is B. The array_flip() function flips the keys and values of the input array, and then array_keys() returns the keys of the resulting array.
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Muriel
11 months ago
Oh, I see. Thanks for clarifying.
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Nobuko
11 months ago
No, the correct answer is A.
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Joye
12 months ago
I think the answer is B.
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