Question

我创建了一个插件，可以将任何uri转换为超链接，如果找到超链接，它将忽略它并且只转换无超链接uri。在插件管理页面中，我设置了两个选项，第一个是仅为前端转换链接，第二个选项是在保存帖子/注释到数据库时转换uri。

// permanently means before save to database
if ( $this->plugin_options['uri2links_convert_method'] == 'permanently' ) {
    add_action( 'wp_insert_post_data', array($this, 'make_post_url_clickable' ) );
        //add_action( 'preprocess_comment', array($this, 'make_comment_url_clickable' ) );
}
else {
    add_filter( 'the_content', array($this, 'make_post_url_clickable' ) );
    //add_filter( 'preprocess_comment', array($this, 'make_comment_url_clickable' ) );
}

我的问题在这里，如果我设置插件选项转换uri为前端它将忽略超链接并转换其他uri，但如果我设置它转换之前保存到数据库它不会忽略超链接并将它们视为正常的uri女巫使结果看起来像这样：

<a class="sdf" href=" <a href="http://test.test-75.1474.stackoverflow.com/" >http://test.test-75.1474.stackoverflow.com/</a> " target="_blank" rel=" <a href="http://127.0.0.1/wplu" >http://127.0.0.1/wplu</a> "> <a href="http://test.test-75.1474.stackoverflow.com/" >http://test.test-75.1474.stackoverflow.com/</a> </a>
<a class="sdf" href=" <a href="https://www.stackoverflow.com" >https://www.stackoverflow.com</a> " target="_blank" rel=" <a href="http://127.0.0.1/wplu" >http://127.0.0.1/wplu</a> "> <a href="https://www.stackoverflow.com" >https://www.stackoverflow.com</a> </a>

完整的插件源代码：

<?php
  /*
    Plugin name: URIs to a click-able links
    Plugin URI:
    Description: Convert URI's to a click-able links
    Author: h Abdou
    Author URI: habdou.me
    Version: 1.0
  */

  // The admin page for the plugin
  require_once( 'uri2links-menu.php' );

  class Uri2Links {

    protected $css                 = '';
    protected $rel                 = '';
    protected $target              = '';
    protected $convert_links       = '';
    protected $convert_emails      = '';
    protected $plugin_options      = array();
    protected $url_match_pattern   = '/[a-zA-Z0-9\.\/\?\:@\-_=#]+\.([a-zA-Z0-9\.\/\?\:@\-_=#])+/';
    protected $email_match_pattern = '/^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$/';
    //protected $links_match_pattern = '/<a(?:"[^"]*"[\'"]*|\'[^\']*\'[\'"]*|[^\'">])+>^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$<\/a>/';
    protected $links_match_pattern = '/<a[^>]*>(.*?)<\/a>/';
    protected $links_matched       = array();

    public function __construct() {
      //$this->plugin_options = get_option( 'uri2links_plugin_options' );
      $this->plugin_options = array( 'uri2links_convertLinksEmails' => array( 'Links', 'Emails' ), 'uri2links_convert_method' => 'permanently' );
      $this->css            = isset( $this->plugin_options['uri2links_custom_css'] ) ? ' class="' . $this->plugin_options['uri2links_custom_css']  . '"' : '';
      $this->rel            = isset( $this->plugin_options['uri2links_rel_attr'] ) ? ' rel="' . $this->plugin_options['uri2links_rel_attr']  . '"' : '';
      if ( isset( $this->plugin_options['uri2links_open_links_method'] ) && $this->plugin_options['uri2links_open_links_method'] == 'new')
        $this->target = ' target="_blank"';

      $this->convert_links  = isset( $this->plugin_options['uri2links_convertLinksEmails'][0] ) ? $this->plugin_options['uri2links_convertLinksEmails'][0] : '';
      $this->convert_emails = isset( $this->plugin_options['uri2links_convertLinksEmails'][1] ) ? $this->plugin_options['uri2links_convertLinksEmails'][1] : '';
      if ( $this->plugin_options['uri2links_convert_method'] == 'permanently' ) {
        add_action( 'wp_insert_post_data', array($this, 'make_post_url_clickable' ) );
        //add_action( 'preprocess_comment', array($this, 'make_comment_url_clickable' ) );
      }
      else {
        add_filter( 'the_content', array($this, 'make_post_url_clickable' ) );
        //add_filter( 'preprocess_comment', array($this, 'make_comment_url_clickable' ) );
      }

      // The admin page for the plugin
      new Uri2LinksMenu;
    }

    // Convert all URI in a post to hyper-links.
    public function make_post_url_clickable( $content ) {
      $links = $this->hash_links( $content );
      if ( $this->convert_links == 'Links' ) {
        $content =  preg_replace($this->url_match_pattern, ' <a href="\\0"' . $this->css . $this->rel . $this->target . ' >\\0</a> ', $content);
      }

      if ( $this->convert_emails == 'Emails' ) {
        $content =  preg_replace($this->email_match_pattern, ' <a href="mailto:\\0"' . $this->css . $this->rel . $this->target . ' >\\0</a> ', $content);
      }

      // Replace back the hashed 'a' tags to the original status.
      foreach ( $links as $link_hash => $link_text ) {
        $content = str_replace( $link_hash, $link_text, $content );
      }

      return $content;
    }

    // Same as 'make_post_url_clickable' but this for comments
    public function make_comment_url_clickable( $content ) {
      $links = hash_links( $content['comment_content']['comment_content'] );
      if ( $this->convert_links == 'Links' ) {
        $content['comment_content'] =  preg_replace($this->url_match_pattern, ' <a href="\\0"' . $this->css . $this->rel . $this->target . ' >\\0</a> ', $content['comment_content']);
      }

      if ( $this->convert_emails == 'Emails' ) {
        $content['comment_content'] =  preg_replace($this->email_match_pattern, ' <a href="mailto:\\0"' . $this->css . $this->rel . $this->target . ' >\\0</a> ', $content['comment_content']);
      }

      foreach ( $links as $link_hash => $link_text ) {
        $content['comment_content'] = str_replace( $link_hash, $link_text, $content['comment_content'] );
      }

      return $content;
    }

    // hash all 'a' tags so 'make_*_url_clickable' will ignore them.
    public function hash_links( &$content ) {
      $links = array();
      if ( preg_match_all( $this->links_match_pattern, $content, $matches ) ) {
        $array_size = sizeof( $matches[0] );
        for ( $i = 0; $i < $array_size; ++$i ) {
          $link_hash = md5( $matches[0][$i] );
          $links[$link_hash] = $matches[0][$i];
          $content = str_replace( $matches[0][$i], $link_hash, $content );
        }
      }

      //die('hash_links called!');
      return $links;
    }

  }

  new Uri2Links;
?>

Answer 1

我只想提一下，WordPress已经获得了make_clickable()函数，它将文本uri转换为HTML链接。

要为帖子内容激活它，我们只需要这个简单的插件：

<?php 
/** Plugin Name: Make text uri to HTML links in the post content **/

add_filter( 'the_content', 'make_clickable', 9 );

默认情况下，此功能在注释文本上运行：

add_filter( 'comment_text', 'make_clickable', 9 );

两个不同的WordPress钩子具有相同的回调

1 个答案: