PHP: Hypertext Preprocessor (original) (raw)

is_countable

(PHP 7 >= 7.3.0, PHP 8)

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

Description

Parameters

value

The value to check

Return Values

Returns [true](reserved.constants.php#constant.true) if value is countable, [false](reserved.constants.php#constant.false) otherwise.

Changelog

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

Found A Problem?

info at arisendrake dot de ¶

6 years ago

`If you are unable to upgrade to PHP 7.3 (not released at the time of writing), you can use this simple polyfill:

`

renic ¶

5 years ago

be wary of using is_object($var) and assuming that the object has implemented Countable. Not all objects are countable directly with count().

danmichaelo at gmail dot com ¶

6 years ago

Note that a polyfill for this method is also provided by the symfony/polyfill project.