mb_strwidth

FunctionParams and return types changed in PHP 8.0

Return width of string.

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

mb_strwidth Function synopsis

mb_strwidth(string $string, ?string $encoding = null): int

Parameters

$string

Typestring

The string being decoded.

$encoding

OptionalType?stringDefault valuenull

Return value

Typeint

The width of string $string.

Changes to the mb_strwidth Function

PHP 8.0

  • Return type added: int
  • Parameter name of parameter #1 changed: $str to $string
  • Parameter type added for parameter #1 ($string): string
  • Parameter type added for parameter #2 ($encoding): ?string
  • Parameter default value added for position #2 ($encoding): null
- mb_strwidth($str, $encoding)
+ mb_strwidth(string $string, ?string $encoding = null): int

mb_strwidth Function Availability

PHP VersionAvailability
PHP 8.5Future Release Yes
PHP 8.4Upcoming Release Yes
PHP 8.3Supported (Latest) Yes
PHP 8.2Supported Yes
PHP 8.1Security-Fixes Only 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