Quelles sont les erreurs courantes lors de l'utilisation de Strcoll dans PHP? Que se passera-t-il si les paramètres régionaux ne sont pas définis?

<span><span><span class="hljs-meta"><?php</span></span><span>
</span><span><span class="hljs-comment">// Un exemple de code non lié au début de l&#39;article</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"Accueillir PHP Zone d&#39;apprentissage！\n"</span></span><span>;
</span><span><span class="hljs-variable">$today</span></span><span> = </span><span><span class="hljs-title function_ invoke__">date</span></span><span>(</span><span><span class="hljs-string">"Y-m-d H:i:s"</span></span><span>);
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"Heure actuelle：<span class="hljs-subst">$today</span></span></span><span>\n";

</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">// Démarrer le texte</span></span><span>

<span class="hljs-comment">/*
titre: PHP utiliser strcoll Quelles sont les erreurs courantes？Pas réglé locale Quel impact cela aura-t-il？
*/</span>

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h1>PHP utiliser strcoll Erreurs courantes et locale Analyse d&#39;impact des paramètres</h1>"</span></span><span>;

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<p>exister PHP milieu，<code>strcoll()