[Solved] What will be the output of the following PHP code?$arr = [1, 2, 3];print_r($arr); — Ans: Array ( [0] => 1 [1] => 2 [2] => 3 ) | PHP

PHP - Output and String Handling

What will be the output of the following PHP code?

$arr = [1, 2, 3];
print_r($arr);

A1 2 3

BArray: 1, 2, 3

CError: Undefined function print_r

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

Step-by-Step Solution

Solution:

Step 1: Understand print_r function
print_r prints human-readable information about arrays, showing keys and values.
Step 2: Predict output for given array
The array has keys 0,1,2 with values 1,2,3, so output is: Array ( [0] => 1 [1] => 2 [2] => 3 )
Final Answer:
Array ( [0] => 1 [1] => 2 [2] => 3 ) -> Option D
Quick Check:
print_r shows array structure [OK]

Quick Trick: print_r shows array keys and values clearly [OK]

Common Mistakes:

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