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</span><span><span class="hljs-comment">// 這裡是與文章內容無關的前置部分</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"本文開始前的一些初始化操作……"</span></span><span>;
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</span><span><span class="hljs-comment">// 文章正文部分開始</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h1>ftruncate處理大文件會卡頓嗎?解析其性能瓶頸與優化技巧</h1>"</span></span><span>;
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<p>在PHP中,<code>ftruncate