mb_check_encoding

Function • Params and return types changed in PHP 8.0

Check if strings are valid for the specified encoding.

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

mb_check_encoding Function synopsis

mb_check_encoding(array|string|null $value = null, ?string $encoding = null): bool

Parameters

$value

OptionalTypearray|string|nullDefault valuenull

The byte stream or array to check. If it is omitted, this function checks all the input from the beginning of the request.

$encoding

OptionalType?stringDefault valuenull

The expected encoding.

Return value

Typebool

Returns true on success, false on failure

Changes to the mb_check_encoding Function

PHP 8.0

  • Return type added: bool
  • Parameter name of parameter #1 changed: $var to $value
  • Parameter type added for parameter #1 ($value): array|string|null
  • Parameter default value added for position #1 ($value): null
  • Parameter type added for parameter #2 ($encoding): ?string
  • Parameter default value added for position #2 ($encoding): null
- mb_check_encoding($var, $encoding)
+ mb_check_encoding(array|string|null $value = null, ?string $encoding = null): bool

mb_check_encoding 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