[Solved] Identify the error in this PHP code using array_map:$arr = [1, 2, 3]; $result = array_map('double', $arr); function double($x) { return $x * 2; } print_r($result); | PHP

PHP - Array Functions

Identify the error in this PHP code using array_map:

$arr = [1, 2, 3];
$result = array_map('double', $arr);
function double($x) {
  return $x * 2;
}
print_r($result);

Aarray_map requires an anonymous function, not a named function

BNo error, code runs correctly

CFunction double is called before it is defined

DMissing semicolon after array_map call

Step-by-Step Solution

Solution:

Step 1: Check function definition and usage
The function double is defined after the array_map call, but PHP allows this because functions are hoisted.
Step 2: Verify syntax and function type
array_map accepts named functions as callbacks, and semicolons are correctly placed.
Final Answer:
No error, code runs correctly -> Option B
Quick Check:
Named function callback works fine [OK]

Quick Trick: PHP functions can be used before definition [OK]

Common Mistakes:

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