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Error Identifier: property.defaultValue

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 int $count = 'hello';
}

Why is it reported? #

The default value assigned to a property does not match the property’s declared native type. In the example above, the property $count is declared as int, but its default value is the string 'hello'. This would cause a TypeError at runtime.

PHPStan checks that the default value is compatible with the property’s type declaration so that the class can be instantiated without errors.

How to fix it #

Change the default value to match the property’s type:

 <?php declare(strict_types = 1);
 
 class Foo
 {
-	public int $count = 'hello';
+	public int $count = 0;
 }

Or change the property type to match the default value:

 <?php declare(strict_types = 1);
 
 class Foo
 {
-	public int $count = 'hello';
+	public string $count = 'hello';
 }

How to ignore this error #

You can use the identifier property.defaultValue to ignore this error using a comment:

// @phpstan-ignore property.defaultValue
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: property.defaultValue

Rules that report this error #

• PHPStan\Rules\Properties\DefaultValueTypesAssignedToPropertiesRule [1]

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