버전 호환성 문제 : GC_MEM_CACHES 기능을 사용할 때 무엇에주의를 기울여야합니까?

<span><span><span class="hljs-meta"><?php</span></span><span>
</span><span><span class="hljs-comment">// 서문 부품 샘플 코드，기사의 내용과 관련이 없습니다.</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"환영PHP튜토리얼 예！<br>"</span></span><span>;
</span><span><span class="hljs-variable">$version</span></span><span> = </span><span><span class="hljs-title function_ invoke__">phpversion</span></span><span>();
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"현재의PHP버전입니다：<span class="hljs-subst">$version</span></span></span><span><br>";

</span><span><span class="hljs-comment">// 관련없는 일부 도우미 기능</span></span><span>
</span><span><span class="hljs-function"><span class="hljs-keyword">function</span></span></span><span> </span><span><span class="hljs-title">greet</span></span><span>(</span><span><span class="hljs-params"><span class="hljs-variable">$name</span></span></span><span>) {
    </span><span><span class="hljs-keyword">return</span></span><span> </span><span><span class="hljs-string">"Hello, <span class="hljs-subst">$name</span></span></span><span>!";
}
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-title function_ invoke__">greet</span></span><span>(</span><span><span class="hljs-string">"개발자"</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">// 텍스트를 시작하십시오</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h2>버전 호환성 문제：사용 gc_mem_caches 기능 할 때 무엇에주의를 기울여야합니까?？</h2>"</span></span><span>;

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<p>존재하다PHP가운데，<code>gc_mem_caches()