(PHP 5 >= 5.1.0)
ReflectionClass::hasConstant — Checks if constant is defined
Checks whether the class has a specific constant defined or not.
The name of the constant being checked for.
TRUE if the constant is defined, otherwise FALSE.
例1 ReflectionClass::hasConstant example
<?php
class Foo {
const c1 = 1;
}
$class = new ReflectionClass("Foo");
var_dump($class->hasConstant("c1"));
var_dump($class->hasConstant("c2"));
?>
上の例の出力は、 たとえば以下のようになります。
bool(true) bool(false)