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ReflectionClass::getConstant

PHP function Edit on GitHub ✎

(PHP 5, PHP 7, PHP 8)

Gets defined constant

Description

ReflectionClass::getConstant(string $name): mixed

Gets the defined constant.

Parameters

name: The name of the class constant to get.

Return Values

Value of the constant with the name name. Returns false if the constant was not found in the class.

Changelog

Version	Description
8.5.0	Calling `ReflectionClass::getConstant` for constants that do not exist has been deprecated.

Examples

Usage of ReflectionClass::getConstant

php

<?php

class Example {
    const C1 = false;
    const C2 = 'I am a constant';
}

$reflection = new ReflectionClass('Example');

var_dump($reflection->getConstant('C1'));
var_dump($reflection->getConstant('C2'));
var_dump($reflection->getConstant('C3'));
?>

The above example will output:

output

bool(false)
string(15) "I am a constant"
bool(false)