sizeof

Function • Params and return types changed in PHP 8.0

Alias of count.

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

sizeof Function synopsis

sizeof(Countable|array $value, int $mode = COUNT_NORMAL): int

Parameters

$value

TypeCountable|array

$mode

OptionalTypeintDefault valueCOUNT_NORMAL

Return value

Typeint

Changes to the sizeof Function

PHP 8.0

  • Return type added: int
  • Parameter name of parameter #1 changed: $var to $value
  • Parameter type added for parameter #1 ($value): Countable|array
  • Parameter type added for parameter #2 ($mode): int
  • Parameter default value added for position #2 ($mode): COUNT_NORMAL
- sizeof($var, $mode)
+ sizeof(Countable|array $value, int $mode = COUNT_NORMAL): int

sizeof 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