property.nonObject

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;
 }