bcsub

Function • Params and return types changed in PHP 8.0

Subtract one arbitrary precision number from another.

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

bcsub Function synopsis

bcsub(
    string $num1,
    string $num2,
    ?int $scale = null
  ): string

Parameters

$num1

Typestring

$num2

Typestring

$scale

OptionalType?intDefault valuenull

Return value

Typestring

The result of the subtraction, as a string.

Changes to the bcsub Function

PHP 8.0

  • Return type added: string
  • Parameter name of parameter #1 changed: $left_operand to $num1
  • Parameter type added for parameter #1 ($num1): string
  • Parameter name of parameter #2 changed: $right_operand to $num2
  • Parameter type added for parameter #2 ($num2): string
  • Parameter type added for parameter #3 ($scale): ?int
  • Parameter default value added for position #3 ($scale): null
  bcsub(
-     $left_operand,
+     string $num1,
-     $right_operand,
+     string $num2,
-     $scale
+     ?int $scale = null
-   )
+   ): string

bcsub 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