[Solved] Identify the error in this PHP code:interface Shape { public function area(); }class Circle implements Shape { public function area($radius) { return 3.14 * $radius * $radius; }} | PHP

PHP - Interfaces and Traits

Identify the error in this PHP code:

interface Shape { public function area(); }
class Circle implements Shape {
  public function area($radius) { return 3.14 * $radius * $radius; }
}

ACannot implement interface inside a class

BMissing interface keyword before class

CNo error, code is correct

DMethod signature mismatch: interface method has no parameters, class method has one

Step-by-Step Solution

Solution:

Step 1: Compare method signatures
Interface method area() has no parameters; class method area($radius) has one parameter.
Step 2: Understand PHP rules
Method signatures must match exactly; mismatch causes error.
Final Answer:
Method signature mismatch: interface method has no parameters, class method has one -> Option D
Quick Check:
Interface and class method signatures must match [OK]

Quick Trick: Method signatures must match interface exactly [OK]

Common Mistakes:

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