Checks class for instance

# ReflectionClass::isInstance

(PHP 5, PHP 7, PHP 8)

ReflectionClass::isInstance — Checks class for instance

### Description

public ReflectionClass::isInstance(object `$object`): bool

Checks if an object is an instance of a class.

### Parameters

`object`

  The object being compared to.

### Return Values

Returns `true` if the object is an instance of the class, or `false` otherwise.

### Examples

Example #1 ReflectionClass::isInstance() related examples

`<?php
class Foo {}
$object = new Foo();
$reflection = new ReflectionClass('Foo');
if ($reflection->isInstance($object)) {
echo "Yes\n";
}
// Equivalent to
if ($object instanceof Foo) {
echo "Yes\n";
}
// Equivalent to
if (is_a($object, 'Foo')) {
echo "Yes";
}
?>`

The above example will output something similar to:

    Yes
    Yes
    Yes

### See Also

- ReflectionClass::isInterface() - Checks if the class is an interface
- Type operators (instanceof)
- Object Interfaces
- is_a() - Checks whether the object is of a given type or subtype

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