[Solved] Identify the error in the following code:interface Config { private const TIMEOUT = 30; } — Ans: Interfaces cannot have private constants. | PHP

PHP - Interfaces and Traits

Identify the error in the following code:

interface Config {
  private const TIMEOUT = 30;
}

AThe const keyword is not allowed in interfaces.

BInterfaces cannot have private constants.

CConstants must be initialized with a string.

DConstants must be declared as protected.

Step-by-Step Solution

Solution:

Step 1: Check visibility of interface constants
Interface constants are always public and cannot be private or protected.
Step 2: Analyze the code
Declaring private const inside interface causes a syntax error.
Final Answer:
Interfaces cannot have private constants. -> Option B
Quick Check:
Interface constants visibility = public only [OK]

Quick Trick: Interface constants cannot have private or protected visibility [OK]

Common Mistakes:

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