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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 |
|---|---|
| 817 | /** |
| 818 | * Provide a No-JS Flash fallback as a last resort for audio / video |
| 819 | * |
| 820 | * @since 3.6.0 |
| 821 | * |
| 822 | * @param string $url |
| 823 | * @return string Fallback HTML |
| 824 | */ |
| 825 | function wp_mediaelement_fallback( $url ) { |
| 826 | return apply_filters( 'wp_mediaelement_fallback', sprintf( '<a href="%1$s">%1$s</a>', esc_url( $url ) ), $url ); |
| 827 | } |
| 828 | |
| 829 | /** |
| 830 | * Return a filtered list of WP-supported audio formats |
| 831 | * |
| 832 | * @since 3.6.0 |
| 833 | * @return array |
| 834 | */ |
| 835 | function wp_get_audio_extensions() { |