intval

Function • Params and return types changed in PHP 8.0

Get the integer value of a variable.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

intval Function synopsis

intval(mixed $value, int $base = 10): int

Parameters

$value

Typemixed

The scalar value being converted to an integer

$base

OptionalTypeintDefault value10

The base for the conversion

Return value

Typeint

The integer value of $value on success, or 0 on failure. Empty arrays return 0, non-empty arrays return 1.

The maximum value depends on the system. 32 bit systems have a maximum signed integer range of -2147483648 to 2147483647. So for example on such a system, intval('1000000000000') will return

  1. The maximum signed integer value for 64 bit systems is

  2. Strings will most likely return 0 although this depends on the leftmost characters of the string. The common rules of integer casting apply.

Changes to the intval Function

PHP 8.0

  • Return type added: int
  • Parameter name of parameter #1 changed: $var to $value
  • Parameter type added for parameter #1 ($value): mixed
  • Parameter type added for parameter #2 ($base): int
  • Parameter default value added for position #2 ($base): 10
- intval($var, $base)
+ intval(mixed $value, int $base = 10): int

intval Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes