ReflectionClass::isIterable
(PHP 7 >= 7.2.0, PHP 8)
ReflectionClass::isIterable — Check whether this class is iterable
Descrizione
Check whether this class is iterable (i.e. can be used inside foreach).
Elenco dei parametri
Questa funzione non contiene parametri.
Valori restituiti
Restituisce true in caso di successo, false in caso di fallimento.
Esempi
Example #1 Basic ReflectionClass::isIterable() Usage
<?php
class 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);
}
?>Il precedente esempio visualizzerà:
Is ArrayObject iterable? bool(true) Is IteratorClass iterable? bool(true) Is DerivedClass iterable? bool(true) Is NonIterator iterable? bool(false)
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