[Solved] Identify the error in this PHP code:class ParentClass { public function sayHi() { echo "Hi from parent"; } } class ChildClass extends ParentClass { public function sayHi() { parent.sayHi();... | PHP

PHP - Inheritance and Polymorphism

Identify the error in this PHP code:

class ParentClass {
  public function sayHi() {
    echo "Hi from parent";
  }
}

class ChildClass extends ParentClass {
  public function sayHi() {
    parent.sayHi();
    echo " and child";
  }
}

$obj = new ChildClass();
$obj->sayHi();

AUsing dot (.) instead of scope resolution (::) to call parent method

BMissing parentheses after method name

CChild class cannot override parent methods

DParent class method is private

Step-by-Step Solution

Solution:

Step 1: Check how parent method is called
The code uses parent.sayHi(); which is invalid syntax in PHP.
Step 2: Correct syntax uses scope resolution operator
It should be parent::sayHi(); to call the parent method inside child.
Final Answer:
Using dot (.) instead of scope resolution (::) to call parent method -> Option A
Quick Check:
Use parent::method(), not parent.method() [OK]

Quick Trick: Use ::, not . to call parent methods [OK]

Common Mistakes:

Using dot (.) operator for method calls
Forgetting parentheses after method name
Assuming private methods can be called by child

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More PHP Quizzes

Identify the error in this PHP code:

Step 1: Check how parent method is called

Step 2: Correct syntax uses scope resolution operator

Final Answer:

Quick Check:

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