中文(繁體)
中文(繁體)
<span><span><span class="hljs-meta"><?php</span></span><span>
</span><span><span class="hljs-comment">// 以下部分與正文無關，僅作為示例前置代碼</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"PHP環境已啟動\n"</span></span><span>;
</span><span><span class="hljs-variable">$dummyArray</span></span><span> = [</span><span><span class="hljs-number">1</span></span><span>, </span><span><span class="hljs-number">2</span></span><span>, </span><span><span class="hljs-number">3</span></span><span>];
</span><span><span class="hljs-keyword">foreach</span></span><span> (</span><span><span class="hljs-variable">$dummyArray</span></span><span> </span><span><span class="hljs-keyword">as</span></span><span> </span><span><span class="hljs-variable">$item</span></span><span>) {
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"前置測試數據: <span class="hljs-subst">$item</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">// 正文開始</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h1>mysql_fetch_array 函數中，使用索引訪問數據和用關聯名訪問數據有何區別？</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>mysql_fetch_array()特點：
" ; echo "關聯名訪問是使用字段名作為數組鍵名，例如：
" ; echo "\n"; echo "姓名: " . $row [ 'name' ] . "\n" ; echo "年齡: " . $row [ 'age' ] . "\n" ; echo " " ; echo "
特點：
" ; echo "函數原型如下：
" ; echo "mysql_fetch_array(resource <span>$result</span>, int $result_type = MYSQL_BOTH) "; echo "
參數$result_type可以是：
"; echo "選擇使用數字索引還是關聯名訪問主要取決於代碼的可讀性和維護性：
" ; echo "
