ReflectionClass
PHP Manual

ReflectionClass::hasConstant

Checks if constant is defined

Description

public bool ReflectionClass::hasConstant(string $name)

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

<?php
class 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

  • ReflectionClass::hasMethod
  • ReflectionClass::hasProperty