Comment utiliser correctement la fonction Curl_Multi_Select pour implémenter des demandes simultanées multipliées, des étapes détaillées et des précautions Analyse

<span><span><span class="hljs-meta"><?php</span></span><span>
</span><span><span class="hljs-comment">// Exemple de code pré-indépendant</span></span><span>
</span><span><span class="hljs-variable">$timestamp</span></span><span> = </span><span><span class="hljs-title function_ invoke__">time</span></span><span>();
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"Horodatage actuel: "</span></span><span> . </span><span><span class="hljs-variable">$timestamp</span></span><span> . </span><span><span class="hljs-string">"\n"</span></span><span>;

</span><span><span class="hljs-variable">$dummyArray</span></span><span> = </span><span><span class="hljs-title function_ invoke__">array_fill</span></span><span>(</span><span><span class="hljs-number">0</span></span><span>, </span><span><span class="hljs-number">5</span></span><span>, </span><span><span class="hljs-string">"test"</span></span><span>);
</span><span><span class="hljs-keyword">foreach</span></span><span> (</span><span><span class="hljs-variable">$dummyArray</span></span><span> </span><span><span class="hljs-keyword">as</span></span><span> </span><span><span class="hljs-variable">$item</span></span><span>) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"Éléments de tableau: "</span></span><span> . </span><span><span class="hljs-variable">$item</span></span><span> . </span><span><span class="hljs-string">"\n"</span></span><span>;
}

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"L&#39;initialisation est terminée。\n"</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">// L&#39;article commence</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h1>Comment l&#39;utiliser correctement curl_multi_select Les fonctions implémentent les demandes simultanées multipliées，Analyse des étapes détaillées et des précautions</h1>"</span></span><span>;

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<p>exister PHP milieu，Faire plusieurs HTTP À la demande，Si vous êtes demandé à son tour URL，Ce sera très bas。utiliser cURL Fourni <strong>curl_multi</strong> Fonctions de la série，Les demandes simultanées peuvent être mises en œuvre，Améliorer l&#39;efficacité。et <strong>curl_multi_select</strong> 是其milieuun个关键函数，Utilisé pour attendre efficacement les multiplexes cURL Activité de poignée，从etéviter CPU Gaspillage inactif。</p>"</span></span><span>;

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h2>un、Concepts de base</h2>"</span></span><span>;
</span><span><span class="hljs-keyword">echo</span></span><span> <span class="hljs-string">"<ul>
<li><strong>curl_multi_init()</strong>：初始化un个 cURL Poignées multithread。</li>
<li><strong>curl_multi_add_handle()</strong>：向Poignées multithreadmilieu添加单个 cURL demander。</li>
<li><strong>curl_multi_exec()</strong>：Effectuez tous ajoutés cURL demander。</li>
<li><strong>curl_multi_select()</strong>：Bloquer et attendre，Jusqu&#39;à certains cURL La poignée a des données à lire，éviter CPU Occupé à attendre。</li>
<li><strong>curl_multi_getcontent()</strong>：获取单个demander的返回内容。</li>
<li><strong>curl_multi_remove_handle()</strong>：移除单个demander句柄。</li>
<li><strong>curl_multi_close()</strong>：关闭Poignées multithread。</li>
</ul>"</span>;

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h2>deux、Étapes détaillées</h2>"</span></span><span>;
</span><span><span class="hljs-keyword">echo</span></span><span> <span class="hljs-string">"<ol>
<li><strong>初始化Poignées multithread：</strong><br>
<code>\$mh = curl_multi_init();