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is_countable

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(PHP 7 >= 7.3.0)

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

Description

is_countable ( mixed $var ) : bool

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

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Parameters

var

The value to check

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Return Values

Returns TRUE if var is countable, FALSE otherwise.

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Changelog

Version Description
7.3.0 is_countable() has been added.

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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)

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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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Document created the 30/01/2003, last modified the 26/10/2018
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References

  1. View the html document Language of the document:fr Manuel PHP : http://php.net

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