(PHP 5 >= 5.2.0, PHP 7, PECL swoole >= 1.9.0)
Swoole\Atomic::sub — Subtract a number to the value of the atomic object.
$sub_value
] ) : integerSubtract a number to the value of the atomic object.
sub_valueThe value which will be subtracted to the current value.
The current value of the atomic object.