ReflectionClass
PHP Manual

ReflectionClass::isInstance

Checks class for instance

Description

public bool ReflectionClass::isInstance(object $object)

Checks if an object is an instance of a class.

Parameters

object

The object being compared to.

Return Values

Returns true on success or false on failure.

Examples

Example #1 ReflectionClass::isInstance related examples

<?php
// Example usage
$class = new ReflectionClass('Foo');

if ($class->isInstance($arg)) {
    echo "Yes";
}

// Equivalent to
if ($arg instanceof Foo) {
    echo "Yes";
}

// Equivalent to
if (is_a($arg, 'Foo')) {
    echo "Yes";
}
?>

The above example will output something similar to:

Yes
Yes
Yes

See Also