WordPress at a glance
filter is not described

the_title filter-hook . WP 0.71

Filters the post title.

Usage

add_filter( 'the_title', 'filter_function_name_6722', 10, 2 );
function filter_function_name_6722( $title, $id ){
	// filter...

	return $title;
}
$title(string)
The post title.
$id(int)
The post ID.

Where the hook is called

get_the_title()
Walker_Nav_Menu_Checklist::start_el()
previous_post()
next_post()
Walker_Page::start_el()
Walker_Nav_Menu::start_el()
WP_Customize_Nav_Menu_Item_Setting::get_original_title()
wp_setup_nav_menu_item()
WP_Posts_List_Table::column_title()
wp_get_archives()
get_adjacent_post_link()
do_trackbacks()
get_boundary_post_rel_link()
get_parent_post_rel_link()
wp-includes/post-template.php 158
return apply_filters( 'the_title', $title, $id );
wp-admin/includes/class-walker-nav-menu-checklist.php 96
$title = apply_filters( 'the_title', $item->post_title, $item->ID );
wp-includes/deprecated.php 151
$string .= apply_filters('the_title', $post->post_title, $post->ID);
wp-includes/deprecated.php 186
$string .= apply_filters('the_title', $post->post_title, $post->ID);
wp-includes/class-walker-page.php 192
apply_filters( 'the_title', $page->post_title, $page->ID ),
wp-includes/class-walker-nav-menu.php 204
$title = apply_filters( 'the_title', $item->title, $item->ID );
wp-includes/customize/class-wp-customize-nav-menu-item-setting.php 274
$original_title = apply_filters( 'the_title', $original_object->post_title, $original_object->ID );
wp-includes/nav-menu.php 780
$original_title = apply_filters( 'the_title', $original_object->post_title, $original_object->ID );
wp-admin/includes/class-wp-posts-list-table.php 890
$parent_name = apply_filters( 'the_title', $parent->post_title, $parent->ID );
wp-includes/general-template.php 1881
$text = strip_tags( apply_filters( 'the_title', $result->post_title, $result->ID ) );
wp-includes/link-template.php 2026
$title = apply_filters( 'the_title', $title, $post->ID );
wp-includes/comment.php 2543
$post_title = apply_filters( 'the_title', $post->post_title, $post->ID );
wp-includes/deprecated.php 2689
$title = apply_filters('the_title', $title, $post->ID);
wp-includes/deprecated.php 2764
$title = apply_filters('the_title', $title, $post->ID);

Where the hook is used (in WP core)

wp-includes/default-filters.php 155
add_filter( 'the_title', 'wptexturize' );
wp-includes/default-filters.php 156
add_filter( 'the_title', 'convert_chars' );
wp-includes/default-filters.php 157
add_filter( 'the_title', 'trim' );
wp-admin/includes/class-wp-media-list-table.php 607
add_filter( 'the_title','esc_html' );
wp-admin/includes/class-wp-posts-list-table.php 636
add_filter( 'the_title', 'esc_html' );