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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 |
|---|---|
| 2971 | * If the filtered output isn't empty, it will be used instead of generating the default audio template. |
| 2972 | * |
| 2973 | * @since 3.6.0 |
| 2974 | * |
| 2975 | * @param string $html Empty variable to be replaced with shortcode markup. |
| 2976 | * @param array $attr Attributes of the shortcode. @see wp_audio_shortcode() |
| 2977 | * @param string $content Shortcode content. |
| 2978 | * @param int $instance Unique numeric ID of this audio shortcode instance. |
| 2979 | */ |
| 2980 | $override = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instance ); |
| 2981 | |
| 2982 | if ( '' !== $override ) { |
| 2983 | return $override; |
| 2984 | } |
| 2985 | |
| 2986 | $audio = null; |
| 2987 | |
| 2988 | $default_types = wp_get_audio_extensions(); |
| 2989 | $defaults_atts = array( |