Type Operators
PHP has a single type operator: instanceof. instanceof is
used to determine whether a given object is of a specified
object class.
instanceof was introduced in PHP 5.
<?php
class A { }
class B { }
$thing = new A;
if ($thing instanceof A) {
echo 'A';
}
if ($thing instanceof B) {
echo 'B';
}
?>
As $thing is an object of type A, but not B, only the block
dependent on the A type will be executed:
A
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