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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 |
|---|---|
| 2406 | /** |
| 2407 | * Filters the class attribute for the audio shortcode output container. |
| 2408 | * |
| 2409 | * @since 3.6.0 |
| 2410 | * @since 4.9.0 The `$atts` parameter was added. |
| 2411 | * |
| 2412 | * @param string $class CSS class or list of space-separated classes. |
| 2413 | * @param array $atts Array of audio shortcode attributes. |
| 2414 | */ |
| 2415 | $atts['class'] = apply_filters( 'wp_audio_shortcode_class', $atts['class'], $atts ); |
| 2416 | |
| 2417 | $html_atts = array( |
| 2418 | 'class' => $atts['class'], |
| 2419 | 'id' => sprintf( 'audio-%d-%d', $post_id, $instance ), |
| 2420 | 'loop' => wp_validate_boolean( $atts['loop'] ), |
| 2421 | 'autoplay' => wp_validate_boolean( $atts['autoplay'] ), |
| 2422 | 'preload' => $atts['preload'], |
| 2423 | 'style' => $atts['style'], |
| 2424 | ); |