老唐笔记
对于小博客来说，放点广告，能回点主机、域名的成本，在不影响用户体验的情况下，也是应当的。毕竟做什么事情都是要有收益才能持久。今天也正好想到这个问题，于是搜了一下，顺手记录一下在 WordPress 中如何纯代码在指定的段落间插入广告。
实现方法
打开 function.php，加入以下代码：
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | <span class="com">/** * WordPress 在文章内容中间插入广告 */</span><span class="pln"></span><span class="com">//在文章内容的第二段后面插入广告</span><span class="pln">add_filter</span><span class="pun">(</span><span class="pln"> </span><span class="str">'the_content'</span><span class="pun">,</span><span class="pln"> </span><span class="str">'prefix_insert_post_ads'</span><span class="pln"> </span><span class="pun">);</span><span class="pln"></span><span class="kwd">function</span><span class="pln"> prefix_insert_post_ads</span><span class="pun">(</span><span class="pln"> $content </span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln"> $ad_code </span><span class="pun">=</span><span class="pln"> </span><span class="str">'<div>添加你的广告代码</div>'</span><span class="pun">;</span><span class="pln"> </span><span class="kwd">if</span><span class="pln"> </span><span class="pun">(</span><span class="pln"> is_single</span><span class="pun">()</span><span class="pln"> </span><span class="pun">&&</span><span class="pln"> </span><span class="pun">!</span><span class="pln"> is_admin</span><span class="pun">()</span><span class="pln"> </span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln"> </span><span class="com">// 修改 2 这个段落数</span><span class="pln"> </span><span class="kwd">return</span><span class="pln"> prefix_insert_after_paragraph</span><span class="pun">(</span><span class="pln"> $ad_code</span><span class="pun">,</span><span class="pln"> </span><span class="lit">2</span><span class="pun">,</span><span class="pln"> $content </span><span class="pun">);</span><span class="pln"> </span><span class="pun">}</span><span class="pln"> </span><span class="kwd">return</span><span class="pln"> $content</span><span class="pun">;</span><span class="pln"></span><span class="pun">}</span><span class="pln"> </span><span class="com">// 插入广告所需的功能代码</span><span class="pln"></span><span class="kwd">function</span><span class="pln"> prefix_insert_after_paragraph</span><span class="pun">(</span><span class="pln"> $insertion</span><span class="pun">,</span><span class="pln"> $paragraph_id</span><span class="pun">,</span><span class="pln"> $content </span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln"> $closing_p </span><span class="pun">=</span><span class="pln"> </span><span class="str">'</p>'</span><span class="pun">;</span><span class="pln"> $paragraphs </span><span class="pun">=</span><span class="pln"> explode</span><span class="pun">(</span><span class="pln"> $closing_p</span><span class="pun">,</span><span class="pln"> $content </span><span class="pun">);</span><span class="pln"> </span><span class="kwd">foreach</span><span class="pln"> </span><span class="pun">(</span><span class="pln">$paragraphs </span><span class="kwd">as</span><span class="pln"> $index </span><span class="pun">=></span><span class="pln"> $paragraph</span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln"> </span><span class="kwd">if</span><span class="pln"> </span><span class="pun">(</span><span class="pln"> trim</span><span class="pun">(</span><span class="pln"> $paragraph </span><span class="pun">)</span><span class="pln"> </span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln"> $paragraphs</span><span class="pun">[</span><span class="pln">$index</span><span class="pun">]</span><span class="pln"> </span><span class="pun">.=</span><span class="pln"> $closing_p</span><span class="pun">;</span><span class="pln"> </span><span class="pun">}</span><span class="pln"> </span><span class="kwd">if</span><span class="pln"> </span><span class="pun">(</span><span class="pln"> $paragraph_id </span><span class="pun">==</span><span class="pln"> $index </span><span class="pun">+</span><span class="pln"> </span><span class="lit">1</span><span class="pln"> </span><span class="pun">)</span><span class="pln"> </span><span class="pun">{</span><span class="pln"> $paragraphs</span><span class="pun">[</span><span class="pln">$index</span><span class="pun">]</span><span class="pln"> </span><span class="pun">.=</span><span class="pln"> $insertion</span><span class="pun">;</span><span class="pln"> </span><span class="pun">}</span><span class="pln"> </span><span class="pun">}</span><span class="pln"> </span><span class="kwd">return</span><span class="pln"> implode</span><span class="pun">(</span><span class="pln"> </span><span class="str">''</span><span class="pun">,</span><span class="pln"> $paragraphs </span><span class="pun">);</span><span class="pln"></span><span class="pun">}</span> |
可以修改其中的段落数为你想要的插入广告的位置，比如改成 3 那么就是在第三段后面插入广告。
总结
尝试了一下 Google Adsense 最新推出的文章内广告，发现效果还挺好的。
参考文献
