Given $arr = [1, 2, 3];, which code snippet correctly moves the last element to the front using array_pop and array_unshift?

hard📝 Application Q9 of 15

PHP - Arrays

Given $arr = [1, 2, 3];, which code snippet correctly moves the last element to the front using array_pop and array_unshift?

Aarray_pop($arr); array_unshift($arr, 3);

B$last = array_pop($arr); array_unshift($arr, $last);

C$last = array_pop(); array_unshift($arr, $last);

Darray_unshift($arr, array_pop());

Step-by-Step Solution

Solution:

Step 1: Use array_pop correctly
array_pop($arr) removes last element and returns it, stored in $last.
Step 2: Use array_unshift to add at front
array_unshift($arr, $last) adds $last at the beginning of $arr.
Final Answer:
$last = array_pop($arr); array_unshift($arr, $last); -> Option B
Quick Check:
Pop last, then unshift to front [OK]

Quick Trick: Pop last element, then unshift it to front [OK]

Common Mistakes:

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