Error Identifier: property.nonObject
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);
function doFoo(string $name): void
{
echo $name->length; // ERROR: Cannot access property $length on string.
}
Why is it reported? #
The code attempts to access a property on a value that is not an object. Properties can only be accessed on objects in PHP. Accessing a property on a scalar type (string, int, float, bool), null, or an array will result in a warning or error at runtime.
How to fix it #
Fix the code so that the property is accessed on an object, or use the appropriate function or method for the value type:
<?php declare(strict_types = 1);
function doFoo(string $name): void
{
- echo $name->length;
+ echo strlen($name);
}
If the variable can be null, narrow the type before accessing the property:
<?php declare(strict_types = 1);
-function getName(?User $user): string
+function getName(?User $user): string
{
+ if ($user === null) {
+ return 'Unknown';
+ }
+
return $user->name;
}
How to ignore this error #
You can use the identifier property.nonObject to ignore this error using a comment:
// @phpstan-ignore property.nonObject
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.nonObject