wp_audio_shortcode() │ WP 3.6.0
Builds the Audio shortcode output.
This implements the functionality of the Audio Shortcode for displaying WordPress mp3s in a post.
Return
String|null
. HTML content to display audio.
Usage
wp_audio_shortcode( $attr, $content );
$attr(array) (required)
Attributes of the audio shortcode.
src (string)
URL to the source of the audio file.
Default: ''
loop (string)
The 'loop' attribute for the <audio> element.
Default: ''
autoplay (string)
The 'autoplay' attribute for the <audio> element.
Default: ''
preload (string)
The 'preload' attribute for the <audio> element.
Default: 'none'
class (string)
The 'class' attribute for the <audio> element.
Default: 'wp-audio-shortcode'
style (string)
The 'style' attribute for the <audio> element.
Default: 'width: 100%;'
$content(string)
Shortcode content.
Default: ''
Examples
#1 Display the audio file player anywhere in the template
$args = array(
'src' => 'http://example.com/my.mp3',
'loop' => false,
'autoplay' => false,
'preload' => 'none'
);
echo wp_audio_shortcode( $args );
Outputs HTML code
<!--[if lt IE 9]><script>document.createElement('audio');</script><![endif]-->
<audio class="wp-audio-shortcode" id="audio-7-1" preload="none" style="width: 100%; visibility: hidden;" controls="controls">
<source type="audio/mpeg" src="http://example.com/my.mp3?_=1" />
<a href="http://example.com/my.mp3">http://example.com/my.mp3</a>
</audio>
In the browser we get such a player, where you can turn on and listen to the specified file:
#2 Completely override output
The function can be completely overridden by the wp_audio_shortcode_override hook. Just like it is done with the gallery shortcode in the example function gallery_shortcode() .
add_filter( 'wp_audio_shortcode_override', 'my_audio_shortcode', 10, 4 );
function my_audio_shortcode( $empty_str, $attr, $content, $instance ){
// Check what we need, and if it fits, redefine the
// entire wp_audio_shortcode function
if( $attr['autoplay'] ){
// here we write our own code for the output of the player,
// for music with auto-playback
}
else {
return '';
}
}
Add Your Own Example
Changelog
wp_audio_shortcode() wp audio shortcode code
WP 6.1.1
function wp_audio_shortcode( $attr, $content = '' ) {
$post_id = get_post() ? get_the_ID() : 0;
static $instance = 0;
$instance++;
/**
* Filters the default audio shortcode output.
*
* If the filtered output isn't empty, it will be used instead of generating the default audio template.
*
* @since 3.6.0
*
* @param string $html Empty variable to be replaced with shortcode markup.
* @param array $attr Attributes of the shortcode. @see wp_audio_shortcode()
* @param string $content Shortcode content.
* @param int $instance Unique numeric ID of this audio shortcode instance.
*/
$override = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instance );
if ( '' !== $override ) {
return $override;
}
$audio = null;
$default_types = wp_get_audio_extensions();
$defaults_atts = array(
'src' => '',
'loop' => '',
'autoplay' => '',
'preload' => 'none',
'class' => 'wp-audio-shortcode',
'style' => 'width: 100%;',
);
foreach ( $default_types as $type ) {
$defaults_atts[ $type ] = '';
}
$atts = shortcode_atts( $defaults_atts, $attr, 'audio' );
$primary = false;
if ( ! empty( $atts['src'] ) ) {
$type = wp_check_filetype( $atts['src'], wp_get_mime_types() );
if ( ! in_array( strtolower( $type['ext'] ), $default_types, true ) ) {
return sprintf( '<a class="wp-embedded-audio" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) );
}
$primary = true;
array_unshift( $default_types, 'src' );
} else {
foreach ( $default_types as $ext ) {
if ( ! empty( $atts[ $ext ] ) ) {
$type = wp_check_filetype( $atts[ $ext ], wp_get_mime_types() );
if ( strtolower( $type['ext'] ) === $ext ) {
$primary = true;
}
}
}
}
if ( ! $primary ) {
$audios = get_attached_media( 'audio', $post_id );
if ( empty( $audios ) ) {
return;
}
$audio = reset( $audios );
$atts['src'] = wp_get_attachment_url( $audio->ID );
if ( empty( $atts['src'] ) ) {
return;
}
array_unshift( $default_types, 'src' );
}
/**
* Filters the media library used for the audio shortcode.
*
* @since 3.6.0
*
* @param string $library Media library used for the audio shortcode.
*/
$library = apply_filters( 'wp_audio_shortcode_library', 'mediaelement' );
if ( 'mediaelement' === $library && did_action( 'init' ) ) {
wp_enqueue_style( 'wp-mediaelement' );
wp_enqueue_script( 'wp-mediaelement' );
}
/**
* Filters the class attribute for the audio shortcode output container.
*
* @since 3.6.0
* @since 4.9.0 The `$atts` parameter was added.
*
* @param string $class CSS class or list of space-separated classes.
* @param array $atts Array of audio shortcode attributes.
*/
$atts['class'] = apply_filters( 'wp_audio_shortcode_class', $atts['class'], $atts );
$html_atts = array(
'class' => $atts['class'],
'id' => sprintf( 'audio-%d-%d', $post_id, $instance ),
'loop' => wp_validate_boolean( $atts['loop'] ),
'autoplay' => wp_validate_boolean( $atts['autoplay'] ),
'preload' => $atts['preload'],
'style' => $atts['style'],
);
// These ones should just be omitted altogether if they are blank.
foreach ( array( 'loop', 'autoplay', 'preload' ) as $a ) {
if ( empty( $html_atts[ $a ] ) ) {
unset( $html_atts[ $a ] );
}
}
$attr_strings = array();
foreach ( $html_atts as $k => $v ) {
$attr_strings[] = $k . '="' . esc_attr( $v ) . '"';
}
$html = '';
if ( 'mediaelement' === $library && 1 === $instance ) {
$html .= "<!--[if lt IE 9]><script>document.createElement('audio');</script><![endif]-->\n";
}
$html .= sprintf( '<audio %s controls="controls">', implode( ' ', $attr_strings ) );
$fileurl = '';
$source = '<source type="%s" src="%s" />';
foreach ( $default_types as $fallback ) {
if ( ! empty( $atts[ $fallback ] ) ) {
if ( empty( $fileurl ) ) {
$fileurl = $atts[ $fallback ];
}
$type = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() );
$url = add_query_arg( '_', $instance, $atts[ $fallback ] );
$html .= sprintf( $source, $type['type'], esc_url( $url ) );
}
}
if ( 'mediaelement' === $library ) {
$html .= wp_mediaelement_fallback( $fileurl );
}
$html .= '</audio>';
/**
* Filters the audio shortcode output.
*
* @since 3.6.0
*
* @param string $html Audio shortcode HTML output.
* @param array $atts Array of audio shortcode attributes.
* @param string $audio Audio file.
* @param int $post_id Post ID.
* @param string $library Media library used for the audio shortcode.
*/
return apply_filters( 'wp_audio_shortcode', $html, $atts, $audio, $post_id, $library );
}
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