打开当前 WordPress 主题的 functions.php 文件，添加以下代码：

  1. // 代码实现短网址功能
  2. classSimpleURLs{
  3. // Constructor
  4. function __construct(){
  5. //register_activation_hook( __FILE__, 'flush_rewrite_rules' );
  6. add_action('init', array(&$this,'register_post_type'));
  7. add_action('manage_posts_custom_column', array(&$this,'columns_data'));
  8. add_filter('manage_edit-surl_columns', array(&$this,'columns_filter'));
  9. add_action('admin_menu', array(&$this,'add_meta_box'));
  10. add_action('save_post', array(&$this,'meta_box_save'),1,2);
  11. add_action('template_redirect', array(&$this,'count_and_redirect'));
  12. }
  13. // PHP4 Constructor
  14. functionSimpleURLs(){
  15. $this->__construct();
  16. }
  17. function register_post_type(){
  18. register_post_type('surl',
  19. array(
  20. 'labels'=> array(
  21. 'name'=> __('Simple URLs'),
  22. 'singular_name'=> __('URL'),
  23. 'add_new'=> __('Add URL'),
  24. 'add_new_item'=> __('新建 URL'),
  25. 'edit'=> __('Edit'),
  26. 'edit_item'=> __('Edit URL'),
  27. 'new_item'=> __('New URL'),
  28. 'view'=> __('View URL'),
  29. 'view_item'=> __('View URL'),
  30. 'search_items'=> __('Search URL'),
  31. 'not_found'=> __('No URLs found'),
  32. 'not_found_in_trash'=> __('')
  33. ),
  34. 'public'=>true,
  35. 'query_var'=>true,
  36. 'menu_position'=>20,
  37. 'supports'=> array('title'),
  38. 'rewrite'=> array('slug'=>'go','with_front'=>false)
  39. )
  40. );
  41. }
  42. function columns_filter( $columns ){
  43. $columns = array(
  44. 'cb'=>'<input type="checkbox" />',
  45. 'title'=> __('标题'),
  46. 'url'=> __('原地址'),
  47. 'permalink'=> __('短地址'),
  48. 'clicks'=> __('点击量')
  49. );
  50. return $columns;
  51. }
  52. function columns_data( $column ){
  53. global $post;
  54. $url = get_post_meta($post->ID,'_surl_redirect',true);
  55. $count = get_post_meta($post->ID,'_surl_count',true);
  56. if( $column =='url'){
  57. echo make_clickable( esc_url( $url ? $url :''));
  58. }
  59. elseif ( $column =='permalink'){
  60. echo make_clickable( get_permalink());
  61. }
  62. elseif ( $column =='clicks'){
  63. echo esc_html( $count ? $count :0);
  64. }
  65. }
  66. function add_meta_box(){
  67. add_meta_box('surl', __('URL 信息','surl'), array(&$this,'meta_box'),'surl','normal','high');
  68. }
  69. function meta_box(){
  70. global $post;
  71. printf('<input type="hidden" name="_surl_nonce" value="%s" />', wp_create_nonce( plugin_basename(__FILE__)));
  72. printf('<p><label for="%s">%s</label></p>','_surl_redirect', __('URL 原链接地址：','surl'));
  73. printf('<p><input style="%s" type="text" name="%s" id="%s" value="%s" /></p>','width: 99%;','_surl_redirect','_surl_redirect', esc_attr( get_post_meta( $post->ID,'_surl_redirect',true)));
  74. $count = isset( $post->ID )? get_post_meta($post->ID,'_surl_count',true):0;
  75. printf('<p> 此链接已经被点击 <b>%d</b> 次.', esc_attr( $count ));
  76. }
  77. function meta_box_save( $post_id, $post ){
  78. $key ='_surl_redirect';
  79. // verify the nonce
  80. if(!isset($_POST['_surl_nonce'])||!wp_verify_nonce( $_POST['_surl_nonce'], plugin_basename(__FILE__)))
  81. return;
  82. // don't try to save the data under autosave, ajax, or future post.
  83. if(defined('DOING_AUTOSAVE')&& DOING_AUTOSAVE )return;
  84. if(defined('DOING_AJAX')&& DOING_AJAX )return;
  85. if(defined('DOING_CRON')&& DOING_CRON )return;
  86. // is the user allowed to edit the URL?
  87. if(! current_user_can('edit_posts')|| $post->post_type !='surl')
  88. return;
  89. $value = isset( $_POST[$key])? $_POST[$key]:'';
  90. if( $value ){
  91. // save/update
  92. update_post_meta($post->ID, $key, $value);
  93. }else{
  94. // delete if blank
  95. delete_post_meta($post->ID, $key);
  96. }
  97. }
  98. function count_and_redirect(){
  99. if(!is_singular('surl'))
  100. return;
  101. global $wp_query;
  102. // Update the count
  103. $count = isset( $wp_query->post->ID )? get_post_meta($wp_query->post->ID,'_surl_count',true):0;
  104. update_post_meta( $wp_query->post->ID,'_surl_count', $count +1);
  105. // Handle the redirect
  106. $redirect = isset( $wp_query->post->ID )? get_post_meta($wp_query->post->ID,'_surl_redirect',true):'';
  107. if(!emptyempty( $redirect )){
  108. wp_redirect( esc_url_raw( $redirect ),301);
  109. exit;
  110. }
  111. else{
  112. wp_redirect( home_url(),302);
  113. exit;
  114. }
  115. }
  116. }
  117. $SimpleURLs =newSimpleURLs;
  118. // 代码实现短网址功能