pfsockopen

实例

一个 pfsockopen() 示例：

<span class="token php language-php"><span class="token delimiter important"><?php</span>
<span class="token variable">$fp</span> <span class="token operator">=</span> <span class="token function">pfsockopen</span><span class="token punctuation">(</span><span class="token string double-quoted-string">"www.gitbox.net"</span><span class="token punctuation">,</span> <span class="token number">80</span><span class="token punctuation">,</span> <span class="token variable">$errno</span><span class="token punctuation">,</span> <span class="token variable">$errstr</span><span class="token punctuation">,</span> <span class="token number">20</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span><span class="token variable">$fp</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
  <span class="token keyword">echo</span> <span class="token string double-quoted-string">"<span class="token interpolation"><span class="token variable">$errstr</span></span> (<span class="token interpolation"><span class="token variable">$errno</span></span>)<br>"</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
  <span class="token variable">$out</span> <span class="token operator">=</span> <span class="token string double-quoted-string">"GET / HTTP/1.1\r\n"</span><span class="token punctuation">;</span>
  <span class="token variable">$out</span> <span class="token operator">.=</span> <span class="token string double-quoted-string">"Host: www.gitbox.net\r\n"</span><span class="token punctuation">;</span>
  <span class="token variable">$out</span> <span class="token operator">.=</span> <span class="token string double-quoted-string">"Connection: Close\r\n\r\n"</span><span class="token punctuation">;</span>
  <span class="token function">fwrite</span><span class="token punctuation">(</span><span class="token variable">$fp</span><span class="token punctuation">,</span> <span class="token variable">$out</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token operator">!</span><span class="token function">feof</span><span class="token punctuation">(</span><span class="token variable">$fp</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">echo</span> <span class="token function">fgets</span><span class="token punctuation">(</span><span class="token variable">$fp</span><span class="token punctuation">,</span> <span class="token number">128</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
  <span class="token function">fclose</span><span class="token punctuation">(</span><span class="token variable">$fp</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
<span class="token delimiter important">?></span></span>