Wordpress referencia de tags condicionales

conditional-tags.php

// A Single Post Page
is_single() 
is_single( '17' ) 
is_single( 'Irish Stew' ) 
is_single( 'beef-stew' ) 
is_single( array( 17, 'beef-stew', 'Irish Stew' ) ) 
is_single( array( 17, 19, 1, 11 ) ) 
is_single( array( 'beef-stew', 'pea-soup', 'chili' ) ) 
is_single( array( 'Beef Stew', 'Pea Soup', 'Chili' ) ) 

// A Single Page, a Single Post, an Attachment or Any Other Custom Post Type
is_singular() 
is_singular( 'foo' ) 
is_singular( array( 'foo', 'bar', 'baz' ) ) 

// A Sticky Post
is_sticky() 
is_sticky( '17' ) 

// A Post Type is Hierarchical
is_post_type_hierarchical( $post_type ) 
is_post_type_hierarchical( 'book' ) 

//A Post Type Archive
is_post_type_archive() 
is_post_type_archive( $post_type ) 
is_post_type_archive( array( 'foo', 'bar', 'baz' ) ) 

// A Comments Popup
is_comments_popup() 
comments_open()
pings_open()

// A PAGE Page
is_page() 
is_page( 42 ) 
is_page( 'About Me And Joe' ) 
is_page( 'about-me' ) 
is_page( array( 42, 'about-me', 'About Me And Joe' ) ) 
is_page( array( 42, 54, 6 ) ) 


// Subpage
if ( is_page() && $post->post_parent > 0 ) { 
   // Contenido
}

// Is a Page Template
is_page_template() 
is_page_template( 'about.php' ) 

// A Category Page
is_category( $category ) 
is_category( '9' ) 
is_category( 'Stinky Cheeses' ) 
is_category( 'blue-cheese' ) 
is_category( array( 9, 'blue-cheese', 'Stinky Cheeses' ) ) 
is_category( 5 ) || cat_is_ancestor_of( 5, get_query_var( 'cat' ) ) 
in_category( '5' ) 
in_category( array( 1,2,3 ) ) 
! in_category( array( 4,5,6 ) ) 

// A Tag Page
is_tag() 
is_tag( 'mild' ) 
is_tag( array( 'sharp', 'mild', 'extreme' ) ) 
has_tag() 
has_tag( 'mild' ) 
has_tag( array( 'sharp', 'mild', 'extreme' ) ) 

//A Taxonomy Page (and related)
is_tax
is_tax() 
is_tax( 'flavor' ) 
is_tax( 'flavor', 'mild') 
is_tax( 'flavor', array( 'sharp', 'mild', 'extreme' ) ) 

// has_term
has_term() 
has_term( 'green', 'color' ) 
has_term( array( 'green', 'orange', 'blue' ), 'color' ) 

// term_exists
term_exists( $term, $taxonomy, $parent ) 

// is_taxonomy_hierarchical
is_taxonomy_hierarchical( $taxonomy ) 

// taxonomy_exists
taxonomy_exists( $taxonomy ) 

// An Author Page // Cuando se muestra una página de autor
is_author() 
is_author( '4' ) 
is_author( 'Vivian' ) 
is_author( 'john-jones' ) 
is_author( array( 4, 'john-jones', 'Vivian' ) ) 

// A Multi-author Site
is_multi_author( ) 

// A Date Page
is_date() 
is_year() 
is_month() 
is_day() 
is_time() 
is_new_day() 

// Any Archive Page
is_archive() 

// A Search Result Page
is_search() 

// 404
is_404() 

// A Paged Page
is_paged() 

// An Attachment
is_attachment() 

// Attachment Is Image
wp_attachment_is_image( $post_id ) 

// Post Type Exists
post_type_exists( $post_type ) 

// Is Main Query
is_main_query()

// A Preview
is_preview() 

// Has An Excerpt
has_excerpt() 

// Has A Nav Menu Assigned
has_nav_menu() 

// Inside The Loop
in_the_loop() 

// Is Dynamic SideBar
is_dynamic_sidebar() 

// Is Sidebar Active
is_active_sidebar() 

// Is Widget Active
is_active_widget( $widget_callback, $widget_id ) 

// Is Blog Installed
is_blog_installed() 

// Is User Logged in
is_user_logged_in() 

// Email Exists
email_exists( $email ) 

//Username Exists
username_exists( $username ) 

// An Active Plugin
is_plugin_active( $path ) 
is_plugin_active( 'akismet/akismet.php' ) 
is_plugin_inactive( $path ) 
is_plugin_active_for_network( $path ) 
is_plugin_page() 

// A Child Theme
is_child_theme() 

// Theme supports a feature
current_theme_supports() 
current_theme_support( 'post-thumbnails' )

// Has Post Thumbnail
has_post_thumbnail( $post_id ) 

//Script Is In use
wp_script_is( $handle, $list ) 

// Is Previewed in the Customizer
is_customize_preview()