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?>
<div id="evwatcher.setcallback" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">EvWatcher::setCallback</h1>
  <p class="verinfo">(PECL ev &gt;= 0.2.0)</p><p class="refpurpose"><span class="refname">EvWatcher::setCallback</span> &mdash; <span class="dc-title">Sets new callback for the watcher</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-evwatcher.setcallback-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span>
   <span class="methodname"><strong>EvWatcher::setCallback</strong></span>(<span class="methodparam">
    
    <span class="type"><a href="language.types.callable.php" class="type callable">callable</a></span> <code class="parameter">$callback</code>
   </span>): <span class="type"><a href="language.types.void.php" class="type void">void</a></span></div>

  <p class="para rdfs-comment">
   Sets new callback for the watcher
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-evwatcher.setcallback-parameters">
  <h3 class="title">参数</h3>
  <dl>
   
    <dt>
     <code class="parameter">callback</code>
    </dt>
    <dd>
     <p class="para">
      See
      <a href="ev.watcher-callbacks.php" class="link">Watcher callbacks</a>.
     </p>
    </dd>
   
  </dl>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-evwatcher.setcallback-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   没有返回值。
  </p>
 </div>

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