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<title>Begin checking for events and calling callbacks for the loop</title>
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<h1 class="refname">EvLoop::run</h1>
<p class="verinfo">(PECL ev >= 0.2.0)</p><p class="refpurpose"><span class="refname">EvLoop::run</span> — <span class="dc-title">Begin checking for events and calling callbacks for the loop</span></p>
</div>
<div class="refsect1 description" id="refsect1-evloop.run-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">public</span>
<span class="type"><span class="type void">void</span></span>
<span class="methodname"><strong>EvLoop::run</strong></span>
([ <span class="methodparam">
<span class="type">int</span>
<code class="parameter">$flags</code>
<span class="initializer"> = 0</span>
</span>
] )</div>
<p class="para rdfs-comment">
Begin checking for events and calling callbacks for the current event loop.
Returns when a callback calls
<span class="methodname"><a href="ev.stop.html" class="methodname">Ev::stop()</a></span>
method, or the flags are nonzero(in which case the return value is true) or
when there are no active watchers which reference the loop(
<span class="methodname"><a href="evwatcher.keepalive.html" class="methodname">EvWatcher::keepalive()</a></span>
is <strong><code>TRUE</code></strong>), in which case the return value will be <strong><code>FALSE</code></strong>. The return
value can generally be interpreted as
<em class="emphasis">if <strong><code>TRUE</code></strong>, there is more work left
to do</em>
.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-evloop.run-parameters">
<h3 class="title">Parameters</h3>
<dl>
<dt>
<span class="term">
<em><code class="parameter">flags</code></em>
</span>
<dd>
<p class="para">
Optional parameter
<em><code class="parameter">flags</code></em>
can be one of the following:
<table class="doctable table">
<caption><strong>
List for possible values of <em><code class="parameter">flags</code></em>
</strong></caption>
<thead>
<tr>
<th>
<em><code class="parameter">flags</code></em>
</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>
<strong><code>0</code></strong>
</td>
<td>The default behavior described above</td>
</tr>
<tr>
<td>
<strong><code>Ev::RUN_ONCE</code></strong>
</td>
<td>Block at most one(wait, but don't loop)</td>
</tr>
<tr>
<td>
<strong><code>Ev::RUN_NOWAIT</code></strong>
</td>
<td>Don't block at all(fetch/handle events, but don't wait)</td>
</tr>
</tbody>
</table>
</p>
<p class="para">
See
<a href="class.ev.html#ev.constants.run-flags" class="link">the run flag
constants</a>
.
</p>
</dd>
</dt>
</dl>
</div>
<div class="refsect1 returnvalues" id="refsect1-evloop.run-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
No value is returned.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-evloop.run-seealso">
<h3 class="title">See Also</h3>
<ul class="simplelist">
<li class="member">
<span class="methodname"><a href="evloop.stop.html" class="methodname" rel="rdfs-seeAlso">EvLoop::stop()</a> - Stops the event loop</span>
</li>
<li class="member">
<span class="methodname"><a href="ev.run.html" class="methodname" rel="rdfs-seeAlso">Ev::run()</a> - Begin checking for events and calling callbacks for the default
loop</span>
</li>
</ul>
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