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<div class="refnamediv">
<h1 class="refname">event_set</h1>
<p class="verinfo">(PECL libevent >= 0.0.1)</p><p class="refpurpose"><span class="refname">event_set</span> — <span class="dc-title">Prepare an event</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.event-set-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><a href="event.set.html" class="methodname">event_set</a></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$event</code></span>
, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$fd</code></span>
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$events</code></span>
, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$callback</code></span>
[, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$arg</code></span>
] )</div>
<p class="para rdfs-comment">
Prepares the event to be used in <span class="function"><a href="event.add.html" class="function">event_add()</a></span>. The event
is prepared to call the function specified by the <code class="parameter">callback</code>
on the events specified in parameter <code class="parameter">events</code>, which
is a set of the following flags: <strong><code>EV_TIMEOUT</code></strong>,
<strong><code>EV_SIGNAL</code></strong>, <strong><code>EV_READ</code></strong>,
<strong><code>EV_WRITE</code></strong> and <strong><code>EV_PERSIST</code></strong>.
</p>
<p class="para">
If <strong><code>EV_SIGNAL</code></strong> bit is set in parameter <code class="parameter">events</code>,
the <code class="parameter">fd</code> is interpreted as signal number.
</p>
<p class="para">
After initializing the event, use <span class="function"><a href="function.event-base-set.html" class="function">event_base_set()</a></span> to
associate the event with its event base.
</p>
<p class="para">
In case of matching event, these three arguments are passed to the
<code class="parameter">callback</code> function:
<dl>
<dt>
<code class="parameter">fd</code></dt>
<dd>
<p class="para">
Signal number or resource indicating the stream.
</p>
</dd>
<dt>
<code class="parameter">events</code></dt>
<dd>
<p class="para">
A flag indicating the event. Consists of the following flags:
<strong><code>EV_TIMEOUT</code></strong>, <strong><code>EV_SIGNAL</code></strong>,
<strong><code>EV_READ</code></strong>, <strong><code>EV_WRITE</code></strong>
and <strong><code>EV_PERSIST</code></strong>.
</p>
</dd>
<dt>
<code class="parameter">arg</code></dt>
<dd>
<p class="para">
Optional parameter, previously passed to <span class="function"><a href="event.set.html" class="function">event_set()</a></span>
as <code class="parameter">arg</code>.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.event-set-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">event</code></dt>
<dd>
<p class="para">
Valid event resource.
</p>
</dd>
<dt>
<code class="parameter">fd</code></dt>
<dd>
<p class="para">
Valid PHP stream resource. The stream must be castable to file
descriptor, so you most likely won't be able to use any of filtered
streams.
</p>
</dd>
<dt>
<code class="parameter">events</code></dt>
<dd>
<p class="para">
A set of flags indicating the desired event, can be
<strong><code>EV_READ</code></strong> and/or <strong><code>EV_WRITE</code></strong>.
The additional flag <strong><code>EV_PERSIST</code></strong> makes the event
to persist until <span class="function"><a href="event.del.html" class="function">event_del()</a></span> is called, otherwise
the callback is invoked only once.
</p>
</dd>
<dt>
<code class="parameter">callback</code></dt>
<dd>
<p class="para">
Callback function to be called when the matching event occurs.
</p>
</dd>
<dt>
<code class="parameter">arg</code></dt>
<dd>
<p class="para">
Optional callback parameter.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.event-set-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
<span class="function"><a href="event.set.html" class="function">event_set()</a></span> returns <strong><code>TRUE</code></strong> on success or <strong><code>FALSE</code></strong> on error.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.event-set-changelog">
<h3 class="title">Changelog</h3>
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>0.0.4</td>
<td>
<strong><code>EV_SIGNAL</code></strong> support was added.
</td>
</tr>
</tbody>
</table>
</div>
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