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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 |
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2226 |
|
2227 | /** |
2228 | * Filter the class attribute for the audio shortcode output container. |
2229 | * |
2230 | * @since 3.6.0 |
2231 | * |
2232 | * @param string $class CSS class or list of space-separated classes. |
2233 | */ |
2234 | $html_atts = array( |
2235 | 'class' => apply_filters( 'wp_audio_shortcode_class', 'wp-audio-shortcode' ), |
2236 | 'id' => sprintf( 'audio-%d-%d', $post_id, $instance ), |
2237 | 'loop' => wp_validate_boolean( $atts['loop'] ), |
2238 | 'autoplay' => wp_validate_boolean( $atts['autoplay'] ), |
2239 | 'preload' => $atts['preload'], |
2240 | 'style' => 'width: 100%; visibility: hidden;', |
2241 | ); |
2242 |
|
2243 | // These ones should just be omitted altogether if they are blank |
2244 | foreach ( array( 'loop', 'autoplay', 'preload' ) as $a ) { |