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PHP ReflectionClass isSubclassOf () function

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Syntax:
bool ReflectionClass::isSubclassOf ($class)
Parameters: This function takes one classparameters, which is the class name to be checked.Return value:This function returns TRUE if the subclass is available, otherwise FALSE.The following programs illustrate the ReflectionClass::isSubclassOf()function in PHP:
Program 1:  
// Initialize a custom superclass company class Company { public function GeeksforGeeks() {} }  
// Subclass Departments class Departments extends Company { public function HR_Department() {}}  
// Using ReflectionClass() $subclass = new ReflectionClass ( ’Departments’ );  
// Calling the isSubclassOf() function $Result = $subclass -> isSubclassOf ( ’ Company’ );  
// Get true or false var_dump ( $Result ); ?>
Output:
bool (true)
Program 2:  
// Initialize the custom Departments class class Departments { public function CSE() {} }  
// Using ReflectionClass() over
// custom class Departments $subclass = new ReflectionClass ( ’Departments’ );  
// Calling the isSubclassOf() function $Result = $subclass -> isSubclassOf ( ’ Departments’ );  
// Get true or false var_dump ( $Result ); ?>
Output:
bool (false)
Link: https://www.php.net/manual/en/reflectionclass.issubclassof.php

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