# Ev::depth

(PECL ev >= 0.2.0)

Ev::depth — Returns recursion depth

### 说明

final public static Ev::depth(): int

The number of times Ev::run() was entered minus the number of times Ev::run() was exited normally, in other words, the recursion depth. Outside Ev::run(), this number is `0`. In a callback, this number is `1`, unless Ev::run() was invoked recursively (or from another thread), in which case it is higher.

### 参数

此函数没有参数。

### 返回值

ev_depth() returns recursion depth of the default loop.

### 参见

- Ev::iteration() - Return the number of times the default event loop has polled for new events

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