Code Inspection: Result of 'instanceof' is always 'true'
Reports the instanceof
expressions whose argument is within the hierarchy of the checked variable. Such expressions will always evaluate to true
.
In the following example, the $this
variable is in the context of ChildClass
, which is a direct subclass of ParentClass
. As a result, the instanceof
check always evaluates to true
and the conditional statement becomes redundant. After the quick-fix is applied, the conditional statement is removed.
class ParentClass {}
class ChildClass extends ParentClass {
public function doSmth($message) {
if ($this instanceof ParentClass) {
echo $message;
}
}
}
class ParentClass {}
class ChildClass extends ParentClass {
public function doSmth($message) {
echo $message;
}
}
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Last modified: 16 May 2022