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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

Опис

is_countable(mixed $value): bool

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

Параметри

value

The value to check

Значення, що повертаються

Returns true if value is countable, false otherwise.

Журнал змін

Версія Опис
7.3.0 is_countable() has been added.

Приклади

Приклад #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)
?>

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