wordpress短代碼的想法

Question

我有一個關於在我的網站上生成「wordpress短代碼」代碼的問題。有人知道他們是如何在wordpress中完成短代碼的嗎？我有那麼有一個字符串變量裏面的內容的一個想法檢查，如果字符串有我的示例中列出短代碼：

$x = "there should be a shortcode here [theshortcode]"; 
//if there is a match 
//update the x string add the return of the shortcode [the shortcode] 
//then display it using echo 

這是正確的觀念還是沒有人知道如何落後的wordpress簡碼的概念？

（注：我沒有使用WordPress的，我發展我自己的網站使用的WordPress的簡碼的概念）

Answer 1

https://core.trac.wordpress.org/browser/tags/4.0/src/wp-includes/shortcodes.php#L228包括用於分析的簡碼的代碼...

function get_shortcode_regex() { 
    global $shortcode_tags; 
    $tagnames = array_keys($shortcode_tags); 
    $tagregexp = join('|', array_map('preg_quote', $tagnames)); 

    // WARNING! Do not change this regex without changing do_shortcode_tag() and strip_shortcode_tag() 
    // Also, see shortcode_unautop() and shortcode.js. 
    return 
      '\\['        // Opening bracket 
     . '(\\[?)'       // 1: Optional second opening bracket for escaping shortcodes: [[tag]] 
     . "($tagregexp)"      // 2: Shortcode name 
     . '(?![\\w-])'      // Not followed by word character or hyphen 
     . '('        // 3: Unroll the loop: Inside the opening shortcode tag 
     .  '[^\\]\\/]*'     // Not a closing bracket or forward slash 
     .  '(?:' 
     .   '\\/(?!\\])'    // A forward slash not followed by a closing bracket 
     .   '[^\\]\\/]*'    // Not a closing bracket or forward slash 
     .  ')*?' 
     . ')' 
     . '(?:' 
     .  '(\\/)'      // 4: Self closing tag ... 
     .  '\\]'       // ... and closing bracket 
     . '|' 
     .  '\\]'       // Closing bracket 
     .  '(?:' 
     .   '('      // 5: Unroll the loop: Optionally, anything between the opening and closing shortcode tags 
     .    '[^\\[]*+'    // Not an opening bracket 
     .    '(?:' 
     .     '\\[(?!\\/\\2\\])' // An opening bracket not followed by the closing shortcode tag 
     .     '[^\\[]*+'   // Not an opening bracket 
     .    ')*+' 
     .   ')' 
     .   '\\[\\/\\2\\]'    // Closing shortcode tag 
     .  ')?' 
     . ')' 
     . '(\\]?)';       // 6: Optional second closing brocket for escaping shortcodes: [[tag]] 
} 

我相信這是你想要的，因爲它顯示了他們目前是如何解析的短代碼，並在此行他們實現調用函數https://core.trac.wordpress.org/browser/tags/4.0/src/wp-includes/shortcodes.php#L277 ...

function do_shortcode_tag($m) { 
    global $shortcode_tags; 

    // allow [[foo]] syntax for escaping a tag 
    if ($m[1] == '[' && $m[6] == ']') { 
     return substr($m[0], 1, -1); 
    } 

    $tag = $m[2]; 
    $attr = shortcode_parse_atts($m[3]); 

    if (isset($m[5])) { 
     // enclosing tag - extra parameter 
     return $m[1] . call_user_func($shortcode_tags[$tag], $attr, $m[5], $tag) . $m[6]; 
    } else { 
     // self-closing tag 
     return $m[1] . call_user_func($shortcode_tags[$tag], $attr, null, $tag) . $m[6]; 
    } 
} 

說實話，我只是下載wordpress的一個副本，並竊取wp-includes/shortcodes.php文件，並節省自己的麻煩或重新實現這一點。