Are there any specific guidelines or recommendations for using isset with different types of objects in PHP, such as stdClass versus Closure objects?

When using isset with different types of objects in PHP, it's important to note that isset behaves differently depending on the type of object. For stdClass objects, isset can be used to check if a property exists within the object. However, for Closure objects, isset will always return false as closures cannot have properties checked in this way. To handle this, it's recommended to use a different approach for checking properties within Closure objects. 

// Using isset with stdClass object
$stdObject = new stdClass();
$stdObject->property = 'value';

if(isset($stdObject->property)){
    echo "Property exists";
} else {
    echo "Property does not exist";
}

// Using a different approach for Closure object
$closure = function(){
    return 'Closure object';
};

if($closure instanceof Closure){
    echo "This is a Closure object";
} else {
    echo "This is not a Closure object";
}

Keywords

isset stdClass Closure objects guidelines recommendations

Related Questions