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<h1 class="title">Introduction</h1>
<p class="para">
This is an extension to efficiently schedule I/O, time and signal based
events using the best I/O notification mechanism available for specific
platform. This is a port of libevent to the PHP infrastructure.
</p>
<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">This extension is not
available on Windows platforms.</span></p></blockquote>
<p class="para">
Version
<em class="emphasis">1.0.0</em>
introduces new object-oriented API (breaking backwards compatibility), and
support of libevent 2+ including HTTP, DNS, OpenSSL and the event listener.
</p>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
Note,
<em>event-1.0.0</em>
and greater is not compatible with previous versions.
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