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<h3><a href="/article/e6-b8-ac-e8-a9-a6-wordpress-e4-b8-ad14-e4-b8-aa-e5-ae-9e-e7-94-a8-e7-9a-84-e5-87-bd-e6-95-b0/">[測試] WordPress中14个实用的函数</a></h3>
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<span class="date moment">2016-01-06</span>
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<div class="post-info"><span class="avatar"></span> <span class="date">2011年9月29日15:50</span> <span class="author">作者：否子戈</span> <span class="comment">[0条评论](http://www.utubon.com/post/341.html#respond)</span> <span class="view">阅读966次 </span></div>
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<div class="post-opt"><span class="categories">分类：[WordPress内核](http://www.utubon.com/category/wpcore)</span></div>
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**WordPress临时API**
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<pre>set_transient(), get_transient(), delete_transient()</pre>
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这个函数类似 于用于存储检索选项数据库表单的get_options()以及update_options()函数。 他们的主要区别在于，你可以给这个临时API函数传递一个时间参数，作为数据库输入的过期日。当参数显示的时间到达之后，输入会被移除。如果你需要缓存数 据或查询某个短期时间内的结果，这会是个相当有用的函数。
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set_transient的参数：
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<pre>set_transient($transient, $value, $expiration);</pre>
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将某个值保留在数据库中一小时：
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<pre>set_transient('the_name', $special_query_results, 60*60);</pre>
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结果值：
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<pre>$value = get_transient('the_name');</pre>
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**WordPress “定时任务”函数**
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<pre>wp_schedule_event(time(),?'hourly',?'my_schedule_hook');</pre>
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如果你需要定时执行某段代码，像是检查RSS订阅、数据库备份或是重设数据库值等，就可以用到这个函数。[这里](http://themocracy.com/2010/02/wp-cron-automating-scheduling/)有一个关于这个函数的英文教程。
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**WordPress HTTP API**
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<pre>wp_remote_get(?$url,?$args?=?array()?);</pre>
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这是个用于检索网页内容的简单函数。函数把检索结果存储在一个数组里。你不仅可以得到网页的结果内容，还可以获取网页的页头信息和相应代码。
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**轻松获取RSS 订阅**
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<pre>$feed?=?fetch_feed(?$uri?);</pre>
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fetch_feed是一个用来获取订阅内容的简单WordPress函数。这个函数可以检索、分析并自动缓存订阅内容。
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**WordPress邮件函数**
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<pre>wp_mail() wp_mail(?$to,?$subject,?$message,?$headers,?$attachments?);</pre>
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示例：
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<pre>Example:
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$to = 'kriesi@gmail.com';
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$subject = 'Hello Kriesi!';
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$message = 'This message was sent by wordpress'
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$mail = wp_mail($to, $subject, $message);
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if($mail) echo 'Mail delivered';</pre>
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相当简单实用的函数，利用这个函数你可以发送页头信息和附件、普通文本、HTML信息以及其他各种选项。
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**计时函数**
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<pre>human_time_diff( $from, $to )</pre>
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这个函数显示出的时间效果不是普通的时间格式，而是“XXX发布于XXX小时前”这样。
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**WordPress get_comments函数**
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<pre>get_comments()</pre>
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在评论循环外检索评论内容。
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**字符串验证**
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<pre>wp_kses($string, $allowed_html, $allowed_protocols);</pre>
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如果你需要过滤不受信任的用户输入内容，wp_kses会是个很实用的函数。这个函数确保$string中只出现经许可的HTML元素名称、属性和属性值以及正常的HTML实体。
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**WordPress文本转换**
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<pre>wptexturize()</pre>
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这个函数把常用的字符串转换成印刷时采用的正确符号，比如破折号、省略号等，有时也会为某些段落加上排版引号。
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<pre>wpautop()</pre>
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给字符串添加<p>标签
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**WordPress短码API**
|
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|
<pre>add_shortcode(), do_shortcode()</pre>
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|
add_shortcode()可以快速为你的日志内容创建宏。假设你希望把日志里的某些内容包围在一个div块里，并且加上若干类和id，让你可以创建多个内容栏。你可以用HTML编辑器进行编辑，然后输入下面的内容：
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<pre><div class='one_third'>内容</div></pre>
|
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|
**用PHP函数生成WordPress日志**
|
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|
<pre>wp_insert_post()</pre>
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这个函数在数据库中插入文章页面和自定义文章类型。它会过滤变量并执行检查，补充日期/时间等缺失变量。如果用户可以通过你的网站前台提交内容，这个函数会相当有帮助。
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**用PHP函数生成WordPress评论**
|
|
|
<pre>wp_insert_comment()</pre>
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和wp_insert_posts类似，不过wp_insert_comment插入的是评论。
|
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**WordPress对象缓存**
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|
<pre>wp_cache_add(),? wp_cache_set(),? wp_cache_get(),? wp_cache_delete, wp_cache_replace(), wp_cache_flush</pre>
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|
WP_Object_Cache是WordPress中用以缓存数据的类。
|
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|
**禁止执行WordPress任务**
|
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<pre>wp_die()</pre>
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|
wp_die终止WordPress运行，显示HTML错误信息。
|
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这个函数与PHP函数die()互为补充。HTML信息显示给用户。推荐仅在进程不能再继续时才使用该函数。
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2017
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by Lednerb
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<a href="https://github.com/Lednerb/bilberry-hugo-theme" target="_blank">Bilberry Hugo Theme</a>
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</div>
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</div>
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</div>
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<script type="text/javascript" src="https://h.cowbay.org/js/externalDependencies.39c47e10e241eae2947b3fe21809c572.js" integrity="md5-OcR+EOJB6uKUez/iGAnFcg=="></script>
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<script type="text/javascript" src="https://h.cowbay.org/js/theme.ff50ae6dc1bfc220b23bf69dbb41b54e.js" integrity="md5-/1CubcG/wiCyO/adu0G1Tg=="></script>
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<script>
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$(".moment").each(function() {
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$(this).text(
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moment( $(this).text() )
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.locale( "en" )
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.format('LL')
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);
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});
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$(".footnote-return sup").html("");
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</script>
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<script>
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var client = algoliasearch("Y2C4RWMPXW", "50ea7f8c41c0ad233926e0be2b769ed1");
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var index = client.initIndex("default-content");
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$('#search').autocomplete({ hint: false, autoselect: true, debug: false },
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[
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{
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source: $.fn.autocomplete.sources.hits(index, { hitsPerPage: 5, filters: 'language: en' }),
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displayKey: function(suggestion) {
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return suggestion.title || suggestion.author
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},
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templates: {
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suggestion: function(suggestion) {
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return "<span class='entry " + suggestion.type + "'>"
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+ "<span class='title'>" + suggestion.title + "</span>"
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+ "<span class='fa fa-fw " + suggestion.iconClass + "'></span>"
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+ "</span>"
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;
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},
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empty: function() {
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return "<span class='empty'>Nothing found.</span>"
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},
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footer: function() {
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return '<div class="branding">Powered by <img src="https:\/\/h.cowbay.org\/dist\/algolia-logo-light.svg" /></div>'
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}
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},
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}
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])
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.on('autocomplete:selected', function(event, suggestion, dataset) {
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window.location = (suggestion.url);
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})
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.keypress(function (event, suggestion) {
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if (event.which == 13) {
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window.location = (suggestion.url);
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}
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});
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</script>
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</body>
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</html>
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