[Solved] Identify the error in this PHP code:class ParentClass { protected $value = 10; } class ChildClass extends ParentClass { public function getValue() { return $this->value; } } $obj = new ParentClass();... | PHP

PHP - Classes and Objects

Identify the error in this PHP code:

class ParentClass {
    protected $value = 10;
}

class ChildClass extends ParentClass {
    public function getValue() {
        return $this->value;
    }
}

$obj = new ParentClass();
echo $obj->value;

ASyntax error in class declaration

BChildClass cannot extend ParentClass

CCannot access protected property from outside the class

DNo error, outputs 10

Step-by-Step Solution

Solution:

Step 1: Understand protected property access
Protected properties can be accessed inside the class and child classes, but not from outside.
Step 2: Check code usage
The code tries to echo $obj->value where $obj is ParentClass instance, accessing protected property from outside, causing error.
Final Answer:
Cannot access protected property from outside the class -> Option C
Quick Check:
Protected outside class = error [OK]

Quick Trick: Protected properties not accessible outside class or children [OK]

Common Mistakes:

Trying to access protected property directly from object
Confusing protected with public
Assuming no error when accessing protected externally

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More PHP Quizzes

Identify the error in this PHP code:

Step 1: Understand protected property access

Step 2: Check code usage

Final Answer:

Quick Check:

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