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ReflectionClass::hasConstant

(PHP 5 >= 5.1.2, PHP 7, PHP 8)

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](reserved.constants.php#constant.true) if the constant is defined, otherwise [false](reserved.constants.php#constant.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:

See Also

• ReflectionClass::hasMethod() - Checks if method is defined
• ReflectionClass::hasProperty() - Checks if property is defined