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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 |
---|---|
889 | * Override the default audio shortcode. |
890 | * |
891 | * @since 3.7.0 |
892 | * |
893 | * @param null Empty variable to be replaced with shortcode markup. |
894 | * @param array $attr Attributes of the shortcode. |
895 | * @param string $content Shortcode content. |
896 | * @param int $instances Unique numeric ID of this audio shortcode instance. |
897 | */ |
898 | $html = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instances ); |
899 | if ( '' !== $html ) |
900 | return $html; |
901 |
|
902 | $audio = null; |
903 |
|
904 | $default_types = wp_get_audio_extensions(); |
905 | $defaults_atts = array( |
906 | 'src' => '', |
907 | 'loop' => '', |