What is the output of the following code? var_dump (boolval (new StdClass()));

The correct answer is A. bool(true). In PHP, any object instance is always truthy when converted to boolean - this is a core type-juggling rule. new StdClass() creates a valid object (even though it's empty), and boolval() converts it to bool(true), which var_dump() then prints as bool(true). Option B…

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Question

What is the output of the following code?
var_dump (boolval (new StdClass()));

Options

Abool(true)
Bbool(false)

How the community answered

(17 responses)

A
71% (12)
B
29% (5)

Explanation

In PHP, any object instance is always truthy when converted to boolean - this is a core type-juggling rule. new StdClass() creates a valid object (even though it's empty), and boolval() converts it to bool(true), which var_dump() then prints as bool(true).

Option B (bool(false)) is wrong because PHP's falsy values are a fixed set of primitives: null, 0, 0.0, "", "0", [], and false itself - objects are never in that set, regardless of whether they have properties.

Memory tip: Think "objects exist, therefore they're true." Only nothing (null/empty/zero) is false in PHP - a living object always evaluates to true.

Topics

#boolval#object truthiness#boolean conversion#type casting

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