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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 |
|---|---|
| 848 | /** |
| 849 | * Provide a No-JS Flash fallback as a last resort for audio / video |
| 850 | * |
| 851 | * @since 3.6.0 |
| 852 | * |
| 853 | * @param string $url |
| 854 | * @return string Fallback HTML |
| 855 | */ |
| 856 | function wp_mediaelement_fallback( $url ) { |
| 857 | return apply_filters( 'wp_mediaelement_fallback', sprintf( '<a href="%1$s">%1$s</a>', esc_url( $url ) ), $url ); |
| 858 | } |
| 859 | |
| 860 | /** |
| 861 | * Return a filtered list of WP-supported audio formats |
| 862 | * |
| 863 | * @since 3.6.0 |
| 864 | * @return array |
| 865 | */ |
| 866 | function wp_get_audio_extensions() { |