PHP check whether property exists in object or class

Question

I understand PHP does not have a pure object variable, but I want to check whether a property is in the given object or class.

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Answer 1

If you want to know if a property exists in an instance of a class that you have defined, simply combine property_exists() with isset().

public function hasProperty($property)
{
    return property_exists($this, $property) && isset($this->$property);
}