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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 |
|---|---|
| 3290 | /** |
| 3291 | * Filters the class attribute for the audio shortcode output container. |
| 3292 | * |
| 3293 | * @since 3.6.0 |
| 3294 | * @since 4.9.0 The `$atts` parameter was added. |
| 3295 | * |
| 3296 | * @param string $class CSS class or list of space-separated classes. |
| 3297 | * @param array $atts Array of audio shortcode attributes. |
| 3298 | */ |
| 3299 | $atts['class'] = apply_filters( 'wp_audio_shortcode_class', $atts['class'], $atts ); |
| 3300 | |
| 3301 | $html_atts = array( |
| 3302 | 'class' => $atts['class'], |
| 3303 | 'id' => sprintf( 'audio-%d-%d', $post_id, $instance ), |
| 3304 | 'loop' => wp_validate_boolean( $atts['loop'] ), |
| 3305 | 'autoplay' => wp_validate_boolean( $atts['autoplay'] ), |
| 3306 | 'preload' => $atts['preload'], |
| 3307 | 'style' => $atts['style'], |
| 3308 | ); |