Check whether this class is iterable

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- ReflectionClass
- Check whether this class is iterable

# ReflectionClass::isIterable

(PHP 7 >= 7.2.0, PHP 8)

ReflectionClass::isIterable — Check whether this class is iterable

### Description

public ReflectionClass::isIterable(): bool

Check whether this class is iterable (i.e. can be used inside foreach).

### Parameters

This function has no parameters.

### Return Values

Returns `true` on success or `false` on failure.

### Examples

Example #1 Basic ReflectionClass::isIterable() Usage

    <?phpclass IteratorClass implements Iterator {    public function __construct() { }    public function key() { }    public function current() { }    function next() { }    function valid() { }    function rewind() { }}class DerivedClass extends IteratorClass { }class NonIterator { }function dump_iterable($class) {    $reflection = new ReflectionClass($class);    var_dump($reflection->isIterable());}$classes = array("ArrayObject", "IteratorClass", "DerivedClass", "NonIterator");foreach ($classes as $class) {    echo "Is $class iterable? ";    dump_iterable($class);}?>

The above example will output:

    Is ArrayObject iterable? bool(true)
    Is IteratorClass iterable? bool(true)
    Is DerivedClass iterable? bool(true)
    Is NonIterator iterable? bool(false)

### See Also

- ReflectionClass::__construct() - Constructs a ReflectionClass