ReflectionClass::hasConstant

(PHP 5 >= 5.1.2, PHP 7)

ReflectionClass::hasConstant — Checks 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

<?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