The ReflectionClass::isInstance() function is an inbuilt function in PHP which is used to check whether the specified object is an instance of the class or not.
Syntax:
bool ReflectionClass::isInstance( object $object )
Parameters: This function accepts a single parameter object which is being searched in the instance of the class.
Return Value: This function returns true for the success or false on failure.
Below programs illustrate the ReflectionClass::isInstance() function in PHP:
Program 1:
<?php // Declaring a user-defined class class GFG { }
// Initialising the instance $Instance = new GFG();
// Using ReflectionClass over the // instance GFG $obj = new ReflectionClass( 'GFG' );
// Calling isInstance() function $A = $obj ->isInstance( $Instance );
// Getting the value true or false var_dump( $A );
?> |
Output:
bool(true)
Program 2:
<?php // Declaring a user-defined class class GFG { }
// Using ReflectionClass over the // instance GFG $obj = new ReflectionClass( 'GFG' );
// Calling isInstance() function $A = $obj ->isInstance( $obj );
// Getting the value true or false var_dump( $A );
?> |
Output:
bool(false)
Reference: https://secure.php.net/manual/en/reflectionclass.isinstance.php