Re-enable calls that modify an event buffer

# EventBuffer::unfreeze

(PECL event >= 1.2.6-beta)

EventBuffer::unfreeze — Re-enable calls that modify an event buffer

### 説明

public function EventBuffer::unfreeze( bool `$at_front` ): bool

Re-enable calls that modify an event buffer.

### パラメータ

`at_front`

  Whether to enable events at the front or at the end of the buffer.

### 戻り値

成功した場合に `true` を、失敗した場合に `false` を返します。

### 参考

- EventBuffer::freeze() - Prevent calls that modify an event buffer from succeeding

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