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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 204 | $attributes = ''; |
| 205 | foreach ( $atts as $attr => $value ) { |
| 206 | if ( is_scalar( $value ) && '' !== $value && false !== $value ) { |
| 207 | $value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value ); |
| 208 | $attributes .= ' ' . $attr . '="' . $value . '"'; |
| 209 | } |
| 210 | } |
| 211 | |
| 212 | /** This filter is documented in wp-includes/post-template.php */ |
| 213 | $title = apply_filters( 'the_title', $item->title, $item->ID ); |
| 214 | |
| 215 | /** |
| 216 | * Filters a menu item's title. |
| 217 | * |
| 218 | * @since 4.4.0 |
| 219 | * |
| 220 | * @param string $title The menu item's title. |
| 221 | * @param WP_Post $item The current menu item. |
| 222 | * @param stdClass $args An object of wp_nav_menu() arguments. |