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   <blockquote><p><b class="note">Note</b>: 
    
     <i>static::</i> does not work like <i>$this</i> for
     static methods! <i>$this-&gt;</i> follows the rules of 
     inheritance while <i>static::</i> doesn&#039;t. This difference is
     detailed later on this manual page.
    <br />
   </p></blockquote>
   <div class="example">
    <p><b>Example #3 <i>static::</i> usage in a non-static context</b></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">class&nbsp;</span><span style="color: #0000BB">TestChild&nbsp;</span><span style="color: #007700">extends&nbsp;</span><span style="color: #0000BB">TestParent&nbsp;</span><span style="color: #007700">{<br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;function&nbsp;</span><span style="color: #0000BB">__construct</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static::</span><span style="color: #0000BB">who</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;function&nbsp;</span><span style="color: #0000BB">test</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$o&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">TestParent</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;function&nbsp;</span><span style="color: #0000BB">who</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">__CLASS__</span><span style="color: #007700">.</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br /><br />class&nbsp;</span><span style="color: #0000BB">TestParent&nbsp;</span><span style="color: #007700">{<br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;function&nbsp;</span><span style="color: #0000BB">__construct</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static::</span><span style="color: #0000BB">who</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;function&nbsp;</span><span style="color: #0000BB">who</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">__CLASS__</span><span style="color: #007700">.</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br /></span><span style="color: #0000BB">$o&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">TestChild</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$o</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">test</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>The above example will output:</p></div>
    <div class="example-contents"><pre>
<div class="cdata"><pre>
TestChild
TestParent
</pre></div>
    </pre></div>
   </div>
   <blockquote><p><b class="note">Note</b>: 
    
     Late static bindings&#039; resolution will stop at a fully resolved static call with no fallback. On the other hand, static calls using keywords like <i>parent::</i> or <i>self::</i> will forward the calling information.
    <br />
    <div class="example">
     <p><b>Example #4 Forwarding and non-forwarding calls</b></p>
     <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">class&nbsp;</span><span style="color: #0000BB">A&nbsp;</span><span style="color: #007700">{<br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;function&nbsp;</span><span style="color: #0000BB">foo</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;static::</span><span style="color: #0000BB">who</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;function&nbsp;</span><span style="color: #0000BB">who</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">__CLASS__</span><span style="color: #007700">.</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br /><br />class&nbsp;</span><span style="color: #0000BB">B&nbsp;</span><span style="color: #007700">extends&nbsp;</span><span style="color: #0000BB">A&nbsp;</span><span style="color: #007700">{<br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;function&nbsp;</span><span style="color: #0000BB">test</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">A</span><span style="color: #007700">::</span><span style="color: #0000BB">foo</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">parent</span><span style="color: #007700">::</span><span style="color: #0000BB">foo</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">self</span><span style="color: #007700">::</span><span style="color: #0000BB">foo</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;function&nbsp;</span><span style="color: #0000BB">who</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">__CLASS__</span><span style="color: #007700">.</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br />class&nbsp;</span><span style="color: #0000BB">C&nbsp;</span><span style="color: #007700">extends&nbsp;</span><span style="color: #0000BB">B&nbsp;</span><span style="color: #007700">{<br />&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;function&nbsp;</span><span style="color: #0000BB">who</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">__CLASS__</span><span style="color: #007700">.</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />}<br /><br /></span><span style="color: #0000BB">C</span><span style="color: #007700">::</span><span style="color: #0000BB">test</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
     </div>

     <div class="example-contents"><p>The above example will output:</p></div>
     <div class="example-contents"><pre>
<div class="cdata"><pre>
A
C
C
</pre></div>
     </pre></div>
    </div>
   </p></blockquote>
  </div>
  <div id="language.oop5.late-static-bindings.edge-cases" class="sect2">
   <h3 class="title">Edge cases</h3>
   <p class="para">
    There are lots of different ways to trigger a method call in PHP, like 
    callbacks or magic methods. As late static bindings base their resolution
    on runtime information, it might give unexpected results in so-called edge 
    cases. 
   </p>
   <div class="example">
    <p><b>Example #5 Late static bindings inside magic methods</b></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">class&nbsp;</span><span style="color: #0000BB">A&nbsp;</span><span style="color: #007700">{<br /><br />&nbsp;&nbsp;&nbsp;protected&nbsp;static&nbsp;function&nbsp;</span><span style="color: #0000BB">who</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">__CLASS__</span><span style="color: #007700">.</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;public&nbsp;function&nbsp;</span><span style="color: #0000BB">__get</span><span style="color: #007700">(</span><span style="color: #0000BB">$var</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;static::</span><span style="color: #0000BB">who</span><span style="color: #007700">();<br />&nbsp;&nbsp;&nbsp;}<br />}<br /><br />class&nbsp;</span><span style="color: #0000BB">B&nbsp;</span><span style="color: #007700">extends&nbsp;</span><span style="color: #0000BB">A&nbsp;</span><span style="color: #007700">{<br /><br />&nbsp;&nbsp;&nbsp;protected&nbsp;static&nbsp;function&nbsp;</span><span style="color: #0000BB">who</span><span style="color: #007700">()&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #0000BB">__CLASS__</span><span style="color: #007700">.</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;}<br />}<br /><br /></span><span style="color: #0000BB">$b&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">B</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$b</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">foo</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>The above example will output:</p></div>
    <div class="example-contents"><pre>
<div class="cdata"><pre>
B
</pre></div>
    </pre></div>
   </div>
  </div>
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