(PHP 5 >= 5.1.2, PHP 7, PHP 8)
ReflectionClass::hasConstant — Checks if constant is defined
$name
): boolChecks whether the class has a specific constant defined or not.
name
The name of the constant being checked for.
true
if the constant is defined, otherwise false
.
Example #1 ReflectionClass::hasConstant() example
<?phpclass Foo { const c1 = 1;}$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)