headers_list

实例

返回已发送的响应标头列表：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token function">setcookie</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"TestCookie"</span><span class="token punctuation">,</span><span class="token string double-quoted-string">"SomeValue"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">header</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"X-Sample-Test: foo"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token function">header</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"Content-type: text/plain"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span><span class="token punctuation">></span></span>

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token function">headers_list</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token delimiter important">?></span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span class="token punctuation">></span></span>

上面代码的输出可能是：

<span class="token keyword">array</span><span class="token punctuation">(</span><span class="token number">4</span><span class="token punctuation">)</span>
<span class="token punctuation">{</span>
<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token operator">=></span> <span class="token keyword type-declaration">string</span><span class="token punctuation">(</span><span class="token number">23</span><span class="token punctuation">)</span> <span class="token string double-quoted-string">"X-Powered-By: PHP/7.1.1"</span>
<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span><span class="token operator">=></span> <span class="token keyword type-declaration">string</span><span class="token punctuation">(</span><span class="token number">19</span><span class="token punctuation">)</span> <span class="token string double-quoted-string">"Set-Cookie: TestCookie=SomeValue"</span>
<span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span><span class="token operator">=></span> <span class="token keyword type-declaration">string</span><span class="token punctuation">(</span><span class="token number">18</span><span class="token punctuation">)</span> <span class="token string double-quoted-string">"X-Sample-Test: foo"</span>
<span class="token punctuation">[</span><span class="token number">3</span><span class="token punctuation">]</span><span class="token operator">=></span> <span class="token keyword type-declaration">string</span><span class="token punctuation">(</span><span class="token number">24</span><span class="token punctuation">)</span> <span class="token string double-quoted-string">"Content-type: text/plain"</span>
<span class="token punctuation">}</span>