mb_strtoupper

Function • Params and return types changed in PHP 8.0

Make a string uppercase.

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

mb_strtoupper Function synopsis

mb_strtoupper(string $string, ?string $encoding = null): string

Parameters

$string

Typestring

The string being uppercased.

$encoding

OptionalType?stringDefault valuenull

Return value

Typestring

$string with all alphabetic characters converted to uppercase.

Changes to the mb_strtoupper Function

PHP 8.0

  • Return type added: string
  • Parameter name of parameter #1 changed: $sourcestring 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_strtoupper($sourcestring, $encoding)
+ mb_strtoupper(string $string, ?string $encoding = null): string

mb_strtoupper Function Availability

PHP VersionAvailability
PHP 8.6Future Release Yes
PHP 8.5Upcoming Release Yes
PHP 8.4Supported (Latest) Yes
PHP 8.3Supported Yes
PHP 8.2Security-Fixes Only 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