Error Identifier: classConstant.notFound

Every error reported by PHPStan has an error identifier. Here’s a list of all error identifiers. In PHPStan Pro you can see the error identifier next to each error and filter errors by their identifiers.

Code example #

<?php declare(strict_types = 1);

class Foo
{
    public const BAR = 1;
}

echo Foo::BAZ;

Why is it reported? #

The code accesses a class constant that does not exist on the specified class. This will cause a fatal error at runtime. This is often caused by a typo in the constant name or by accessing a constant that was removed or renamed.

How to fix it #

Use the correct constant name:

 <?php declare(strict_types = 1);
 
-echo Foo::BAZ;
+echo Foo::BAR;

Or define the missing constant:

 <?php declare(strict_types = 1);
 
 class Foo
 {
     public const BAR = 1;
+    public const BAZ = 2;
 }

 echo Foo::BAZ;

How to ignore this error #

You can use the identifier classConstant.notFound to ignore this error using a comment:

// @phpstan-ignore classConstant.notFound
codeThatProducesTheError();

You can also use only the identifier key to ignore all errors of the same type in your configuration file in the ignoreErrors parameter:

parameters:
	ignoreErrors:
		-
			identifier: classConstant.notFound

Rules that report this error #

PHPStan\Rules\Classes\ClassConstantRule [1]

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