Ticks elapsed since the given value

# HRTime\PerformanceCounter::getTicksSince

(PECL hrtime >= 0.6.0)

HRTime\PerformanceCounter::getTicksSince — Ticks elapsed since the given value

### 说明

public static function HRTime\PerformanceCounter::getTicksSince(int `$start`): int

Returns the ticks count elapsed since the given start value.

### 参数

`start`
  Starting ticks value.

### 返回值

Returns int indicating the ticks count.

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