template-loader.php (3012B)
1 <?php 2 /** 3 * Loads the correct template based on the visitor's url 4 * 5 * @package WordPress 6 */ 7 if ( wp_using_themes() ) { 8 /** 9 * Fires before determining which template to load. 10 * 11 * @since 1.5.0 12 */ 13 do_action( 'template_redirect' ); 14 } 15 16 /** 17 * Filters whether to allow 'HEAD' requests to generate content. 18 * 19 * Provides a significant performance bump by exiting before the page 20 * content loads for 'HEAD' requests. See #14348. 21 * 22 * @since 3.5.0 23 * 24 * @param bool $exit Whether to exit without generating any content for 'HEAD' requests. Default true. 25 */ 26 if ( 'HEAD' === $_SERVER['REQUEST_METHOD'] && apply_filters( 'exit_on_http_head', true ) ) { 27 exit; 28 } 29 30 // Process feeds and trackbacks even if not using themes. 31 if ( is_robots() ) { 32 /** 33 * Fired when the template loader determines a robots.txt request. 34 * 35 * @since 2.1.0 36 */ 37 do_action( 'do_robots' ); 38 return; 39 } elseif ( is_favicon() ) { 40 /** 41 * Fired when the template loader determines a favicon.ico request. 42 * 43 * @since 5.4.0 44 */ 45 do_action( 'do_favicon' ); 46 return; 47 } elseif ( is_feed() ) { 48 do_feed(); 49 return; 50 } elseif ( is_trackback() ) { 51 require ABSPATH . 'wp-trackback.php'; 52 return; 53 } 54 55 if ( wp_using_themes() ) { 56 57 $tag_templates = array( 58 'is_embed' => 'get_embed_template', 59 'is_404' => 'get_404_template', 60 'is_search' => 'get_search_template', 61 'is_front_page' => 'get_front_page_template', 62 'is_home' => 'get_home_template', 63 'is_privacy_policy' => 'get_privacy_policy_template', 64 'is_post_type_archive' => 'get_post_type_archive_template', 65 'is_tax' => 'get_taxonomy_template', 66 'is_attachment' => 'get_attachment_template', 67 'is_single' => 'get_single_template', 68 'is_page' => 'get_page_template', 69 'is_singular' => 'get_singular_template', 70 'is_category' => 'get_category_template', 71 'is_tag' => 'get_tag_template', 72 'is_author' => 'get_author_template', 73 'is_date' => 'get_date_template', 74 'is_archive' => 'get_archive_template', 75 ); 76 $template = false; 77 78 // Loop through each of the template conditionals, and find the appropriate template file. 79 foreach ( $tag_templates as $tag => $template_getter ) { 80 if ( call_user_func( $tag ) ) { 81 $template = call_user_func( $template_getter ); 82 } 83 84 if ( $template ) { 85 if ( 'is_attachment' === $tag ) { 86 remove_filter( 'the_content', 'prepend_attachment' ); 87 } 88 89 break; 90 } 91 } 92 93 if ( ! $template ) { 94 $template = get_index_template(); 95 } 96 97 /** 98 * Filters the path of the current template before including it. 99 * 100 * @since 3.0.0 101 * 102 * @param string $template The path of the template to include. 103 */ 104 $template = apply_filters( 'template_include', $template ); 105 if ( $template ) { 106 include $template; 107 } elseif ( current_user_can( 'switch_themes' ) ) { 108 $theme = wp_get_theme(); 109 if ( $theme->errors() ) { 110 wp_die( $theme->errors() ); 111 } 112 } 113 return; 114 }