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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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1642 |
|
1643 | /** |
1644 | * Filter the class attribute for the audio shortcode output container. |
1645 | * |
1646 | * @since 3.6.0 |
1647 | * |
1648 | * @param string $class CSS class or list of space-separated classes. |
1649 | */ |
1650 | $html_atts = array( |
1651 | 'class' => apply_filters( 'wp_audio_shortcode_class', 'wp-audio-shortcode' ), |
1652 | 'id' => sprintf( 'audio-%d-%d', $post_id, $instance ), |
1653 | 'loop' => wp_validate_boolean( $atts['loop'] ), |
1654 | 'autoplay' => wp_validate_boolean( $atts['autoplay'] ), |
1655 | 'preload' => $atts['preload'], |
1656 | 'style' => 'width: 100%; visibility: hidden;', |
1657 | ); |
1658 |
|
1659 | // These ones should just be omitted altogether if they are blank |
1660 | foreach ( array( 'loop', 'autoplay', 'preload' ) as $a ) { |