<span><span><span class="hljs-meta"><?php</span></span><span>
</span><span><span class="hljs-comment">// 此处为文章无关的 PHP 代码示例</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"文章开始前的代码演示<br>"</span></span><span>;
</span><span><span class="hljs-meta">?></span></span><span>
<hr>
</span><span><span class="hljs-meta"><?php</span></span><span>
</span><span><span class="hljs-comment">// 文章正文开始</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h1>socket_last_error 抓不到错误的原因有哪些?常见三大原因分析</h1>"</span></span><span>;
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<p>在使用 PHP 的 socket 编程时,开发者常用 <code>socket_last_error()