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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 |
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115 |
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116 | echo $args['before_widget']; |
117 | if ( $title ) { |
118 | echo $args['before_title'] . $title . $args['after_title']; |
119 | } |
120 |
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121 | $format = current_theme_supports( 'html5', 'navigation-widgets' ) ? 'html5' : 'xhtml'; |
122 |
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123 | /** This filter is documented in wp-includes/widgets/class-wp-nav-menu-widget.php */ |
124 | $format = apply_filters( 'navigation_widgets_format', $format ); |
125 |
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126 | if ( 'html5' === $format ) { |
127 | // The title may be filtered: Strip out HTML and make sure the aria-label is never empty. |
128 | $title = trim( strip_tags( $title ) ); |
129 | $aria_label = $title ? $title : __( 'RSS Feed' ); |
130 | echo '<nav aria-label="' . esc_attr( $aria_label ) . '">'; |
131 | } |
132 |
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133 | wp_widget_rss_output( $rss, $instance ); |