[Solved] What will be the output of this PHP code? $arr = ['a' => 1, 'b' => 2, 'c' => 1]; $flipped = array_flip($arr); print_r($flipped); | PHP

PHP - Array Functions

What will be the output of this PHP code?

$arr = ['a' => 1, 'b' => 2, 'c' => 1];
$flipped = array_flip($arr);
print_r($flipped);

AArray ( [1] => a [2] => b )

BArray ( [1] => c [2] => b )

CArray ( [a] => 1 [b] => 2 [c] => 1 )

DArray ( [1] => a [2] => c )

Step-by-Step Solution

Solution:

Step 1: Understand array_flip() behavior with duplicate values
array_flip() swaps keys and values. When values are duplicated (1 appears twice), the last key ('c') overwrites the first ('a').
Step 2: Determine final flipped array
The flipped array has keys 1 and 2 with values 'c' and 'b' respectively.
Final Answer:
Array ( [1] => c [2] => b ) -> Option B
Quick Check:
array_flip() overwrites duplicate keys, last wins [OK]

Quick Trick: array_flip() keeps last key for duplicate values [OK]

Common Mistakes:

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