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is_countable

(PHP 7 >= 7.3.0, PHP 8)

is_countable — Verify that the contents of a variable is a countable value

Beschreibung

is_countable(mixed $value): bool

Verify that the contents of a variable is an array or an object implementing Countable

Parameter-Liste

value

The value to check

Rückgabewerte

Returns true if value is countable, false otherwise.

Changelog

Version Beschreibung
7.3.0 is_countable() has been added.

Beispiele

Beispiel #1 is_countable() examples

<?php
var_dump(is_countable([1, 2, 3])); // bool(true)
var_dump(is_countable(new ArrayIterator(['foo', 'bar', 'baz']))); // bool(true)
var_dump(is_countable(new ArrayIterator())); // bool(true)
var_dump(is_countable(new stdClass())); // bool(false)
?>

Siehe auch