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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 |
|---|---|
| 31 | if ( 0 !== twentyseventeen_panel_count() || is_customize_preview() ) : // If we have pages to show. |
| 32 | |
| 33 | /** |
| 34 | * Filter number of front page sections in Twenty Seventeen. |
| 35 | * |
| 36 | * @since Twenty Seventeen 1.0 |
| 37 | * |
| 38 | * @param int $num_sections Number of front page sections. |
| 39 | */ |
| 40 | $num_sections = apply_filters( 'twentyseventeen_front_page_sections', 4 ); |
| 41 | global $twentyseventeencounter; |
| 42 | |
| 43 | // Create a setting and control for each of the sections available in the theme. |
| 44 | for ( $i = 1; $i < ( 1 + $num_sections ); $i++ ) { |
| 45 | $twentyseventeencounter = $i; |
| 46 | twentyseventeen_front_page_section( null, $i ); |
| 47 | } |
| 48 | |
| 49 | endif; // The if ( 0 !== twentyseventeen_panel_count() ) ends here. ?> |