ReflectionClass::hasConstant

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

ReflectionClass::hasConstantChecks if constant is defined

Description

public ReflectionClass::hasConstant(string $name): bool

Checks whether the class has a specific constant defined or not.

Parameters

name

The name of the constant being checked for.

Return Values

true if the constant is defined, otherwise false.

Examples

Example #1 ReflectionClass::hasConstant() example

<?phpclass Foo {    const c1 = 1;}$class = new ReflectionClass("Foo");var_dump($class->hasConstant("c1"));var_dump($class->hasConstant("c2"));?>

The above example will output something similar to:

bool(true)
bool(false)

See Also