WordPress开发中短代码的实现及相关函数使用技巧

function myName() {//短代码要处理的函数
return "My name's XiangZi !";
}
//挂载短代码
//xz为短代码名称 
//即你在编辑文章时输入[xz]就会执行 myName 函数
add_shortcode('xz', 'myName');

My name's XiangZi !

function myName($array,$content) {
var_dump($array);
var_dump($content);
}
 
add_shortcode('xz', 'myName');

[xz a="1" b="2" c="3"]这里是三个参数哦[/xz]

//$array 是一个数组，
//大体结构如下
$array = array('a'=>'1','b'=>'2','c'=>'3');
//$content 是一个字符串
$content = '这里是三个参数哦';

shortcode_atts(array(
"url" => 'http://PangBu.Com'
), $url)

/**
 * Combine user attributes with known attributes and fill in defaults when needed.
 *
 * The pairs should be considered to be all of the attributes which are
 * supported by the caller and given as a list. The returned attributes will
 * only contain the attributes in the $pairs list.
 *
 * If the $atts list has unsupported attributes, then they will be ignored and
 * removed from the final returned list.
 *
 * @since 2.5
 *
 * @param array $pairs Entire list of supported attributes and their defaults.
 * @param array $atts User defined attributes in shortcode tag.
 * @return array Combined and filtered attribute list.
 */
function shortcode_atts($pairs, $atts) {
 $atts = (array)$atts;
 $out = array();
 foreach($pairs as $name => $default) {
 if ( array_key_exists($name, $atts) )
  $out[$name] = $atts[$name];
 else
  $out[$name] = $default;
 }
 return $out;
}