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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 |
|---|---|
| 1411 | function wp_mediaelement_fallback( $url ) { |
| 1412 | /** |
| 1413 | * Filter the Mediaelement fallback output for no-JS. |
| 1414 | * |
| 1415 | * @since 3.6.0 |
| 1416 | * |
| 1417 | * @param string $output Fallback output for no-JS. |
| 1418 | * @param string $url Media file URL. |
| 1419 | */ |
| 1420 | return apply_filters( 'wp_mediaelement_fallback', sprintf( '<a href="%1$s">%1$s</a>', esc_url( $url ) ), $url ); |
| 1421 | } |
| 1422 | |
| 1423 | /** |
| 1424 | * Return a filtered list of WP-supported audio formats. |
| 1425 | * |
| 1426 | * @since 3.6.0 |
| 1427 | * @return array |
| 1428 | */ |
| 1429 | function wp_get_audio_extensions() { |