gc_collect_cycles()

(PHP 5 >= 5.3.0, PHP 7)

强制收集所有现存的垃圾循环周期

说明

gc_collect_cycles(void): int

强制收集所有现存的垃圾循环周期。

参数

此函数没有参数。

返回值

返回收集的循环数量。

参见

• 垃圾回收机制

(Since this function wasn't documented as of the date I left this note...)
If you came here looking for documentation, allow me to point you instead to a section in the user manual about garbage collection that includes a bit at the end about when you would use this feature and what it will actually do: http://php.net/manual/en/features.gc.collecting-cycles.php
Hope it helps!