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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

Description

is_countable(mixed $value): bool

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

Parameters

value

The value to check

Return Values

Returns true if value is countable, false otherwise.

Changelog

Version Description
7.3.0 is_countable() has been added.

Examples

Example #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)
?>

See Also

  • is_array() - Finds whether a variable is an array
  • is_object() - Finds whether a variable is an object
  • is_iterable() - Verify that the contents of a variable is an iterable value
  • is_bool() - Finds out whether a variable is a boolean

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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.is-countable.php