/* 代码块基础样式 */
pre {
background: #1e1e1e;
color: #d4d4d4;
padding: 15px;
border-radius: 6px;
overflow-x: auto;
font-family: Consolas, Monaco, 'Courier New', monospace;
line-height: 1.5;
position: relative;
margin: 1em 0;
}

/* 行内代码样式 */
code {
background: #2d2d2d;
color: #d4d4d4;
padding: 2px 4px;
border-radius: 3px;
font-family: Consolas, Monaco, 'Courier New', monospace;
}

/* PHP 关键字颜色 */
.php-keyword {
color: #569cd6;
}

/* 字符串颜色 */
.php-string {
color: #ce9178;
}

/* 注释颜色 */
.php-comment {
color: #6a9955;
}

/* 变量颜色 */
.php-variable {
color: #9cdcfe;
}

/* 函数颜色 */
.php-function {
color: #dcdcaa;
}

/* 数字颜色 */
.php-number {
color: #b5cea8;
}

<pre>
<code>
<span class="php-keyword">public function</span> <span class="php-function">getUpdatesNeeded</span>() {
<span class="php-keyword">return</span> <span class="php-keyword">array</span>(
<span class="php-string">'core'</span> => <span class="php-keyword">false</span>,
<span class="php-string">'plugins'</span> => <span class="php-keyword">array</span>(),
<span class="php-string">'themes'</span> => <span class="php-keyword">array</span>()
);
}
</code>
</pre>