floatval

FunctionParams and return types changed in PHP 8.0

Get float 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

floatval Function synopsis

floatval(mixed $value): float

Parameters

$value

Typemixed

May be any scalar type. floatval should not be used on objects, as doing so will emit an E_WARNING level error and return 1.

Return value

Typefloat

The float value of the given variable. Empty arrays return 0, non-empty arrays return 1.

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

Changes to the floatval Function

PHP 8.0

  • Return type added: float
  • Parameter name of parameter #1 changed: $var to $value
  • Parameter type added for parameter #1 ($value): mixed
- floatval($var)
+ floatval(mixed $value): float

floatval 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