WordPress at a glance
filter is not described

the_title filter-hook . WP 1.0

This filter is documented in wp-includes/post-template.php

Usage

add_filter( 'the_title', 'filter_function_name_7179', 10, 2 );
function filter_function_name_7179( $post_title, $ID ){
	// filter...

	return $post_title;
}
$post_title
-
$ID
-

Where the hook is called

wp_setup_nav_menu_item()
the_title
Walker_Nav_Menu::start_el()
the_title
wp_get_archives()
the_title
get_the_title()
the_title
previous_post()
the_title
next_post()
the_title
get_boundary_post_rel_link()
the_title
get_parent_post_rel_link()
the_title
Walker_Page::start_el()
the_title
get_adjacent_post_link()
the_title
do_trackbacks()
the_title
WP_Customize_Nav_Menu_Item_Setting::get_original_title()
the_title
Walker_Nav_Menu_Checklist::start_el()
the_title
WP_Posts_List_Table::column_title()
the_title
wp-includes/nav-menu.php 841
$original_title = apply_filters( 'the_title', $original_object->post_title, $original_object->ID );
wp-includes/class-walker-nav-menu.php 213
$title = apply_filters( 'the_title', $item->title, $item->ID );
wp-includes/general-template.php 2139
$text = strip_tags( apply_filters( 'the_title', $result->post_title, $result->ID ) );
wp-includes/post-template.php 171
return apply_filters( 'the_title', $title, $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/deprecated.php 2712
$title = apply_filters('the_title', $title, $post->ID);
wp-includes/deprecated.php 2787
$title = apply_filters('the_title', $title, $post->ID);
wp-includes/class-walker-page.php 199
apply_filters( 'the_title', $page->post_title, $page->ID ),
wp-includes/link-template.php 2170
$title = apply_filters( 'the_title', $title, $post->ID );
wp-includes/comment.php 2894
$post_title = apply_filters( 'the_title', $post->post_title, $post->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-admin/includes/class-walker-nav-menu-checklist.php 97
$title = apply_filters( 'the_title', $item->post_title, $item->ID );
wp-admin/includes/class-wp-posts-list-table.php 998
$parent_name = apply_filters( 'the_title', $parent->post_title, $parent->ID );

Where in WP core the hook is used WordPress

wp-includes/nav-menu.php 649
add_filter( 'the_title', 'esc_html' );
wp-includes/nav-menu.php 723
add_filter( 'the_title', 'esc_html' );
wp-includes/nav-menu.php 142
add_filter( $filter, 'capital_P_dangit', 11 );
wp-includes/nav-menu.php 168
add_filter( 'the_title', 'wptexturize' );
wp-includes/nav-menu.php 169
add_filter( 'the_title', 'convert_chars' );
wp-includes/nav-menu.php 170
add_filter( 'the_title', 'trim' );