sodium_memcmp

Function • Params and return types changed in PHP 8.0

Test for equality in constant-time.

PHP 5
PHP 7.0-7.1
PHP 7.2
Added
PHP 7.3-7.4
PHP 8.0
Improved
PHP 8.1
PHP 8.2
PHP 8.3
PHP 8.4
PHP 8.5

sodium_memcmp Function synopsis

sodium_memcmp(string $string1, string $string2): int

Parameters

$string1

Typestring

String to compare

$string2

Typestring

Other string to compare

Return value

Typeint

Returns 0 if both strings are equal; -1 otherwise.

Changes to the sodium_memcmp Function

PHP 8.0

  • Return type added: int
  • Parameter name of parameter #1 changed: $string_1 to $string1
  • Parameter type added for parameter #1 ($string1): string
  • Parameter name of parameter #2 changed: $string_2 to $string2
  • Parameter type added for parameter #2 ($string2): string
- sodium_memcmp($string_1, $string_2)
+ sodium_memcmp(string $string1, string $string2): int

PHP 7.2

  • Function added

sodium_memcmp 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 No
PHP 7.0Unsupported No
PHP 5.6Unsupported No
PHP 5.5Unsupported No
PHP 5.4Unsupported No
PHP 5.3Unsupported No