[Solved] What will be the output of the following PHP code? $arr = ['a' => 1, 'b' => 2, 'c' => 3]; print_r(array_keys($arr)); | PHP

PHP - Array Functions

What will be the output of the following PHP code?

$arr = ['a' => 1, 'b' => 2, 'c' => 3];
print_r(array_keys($arr));

AArray ( [0] => 1 [1] => 2 [2] => 3 )

BArray ( [0] => 'a' [1] => 'b' [2] => 'c' )

CArray ( [a] => 1 [b] => 2 [c] => 3 )

DArray ( [0] => a [1] => b [2] => c )

Step-by-Step Solution

Solution:

Step 1: Understand array_keys() output
It returns an indexed array of all keys from the input array.
Step 2: Analyze given array keys
Keys are strings 'a', 'b', 'c', so output is an indexed array with these strings.
Final Answer:
Array ( [0] => a [1] => b [2] => c ) -> Option D
Quick Check:
array_keys(['a'=>1,...]) = ['a','b','c'] [OK]

Quick Trick: array_keys() returns keys as indexed array [OK]

Common Mistakes:

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