is instance php code example

Example 1: php instanceof

<?php
/*
 * 
 * opcode number: 138
 */
$obj = new A();

if ($obj instanceof A) {
   echo 'A';
}
?>

Example 2: php instanceof

<?php
class MyClass {}
class AnotherClass extends MyClass{}
$obj = new AnotherClass();

if($obj instanceof AnotherClass) {
  echo "The object is AnotherClass";
}
// The object is also an instance of the class it is derived from
if($obj instanceof MyClass) {
  echo "The object is MyClass<br>";
}
?>