How to use post_playlist filter in WordPress

post_playlist filter

Filters the playlist output.

apply_filters( 'post_playlist', string $output, array $attr, int $instance )
Description
This is a filter hook which is used to filter the playlist output. Returning a non-empty value from the filter will short-circuit the generation of the default playlist output, returning the passed value instead.
Parameters

$output : (string) Playlist output. Default empty.
$attr : (array) An array of shortcode attributes.
$instance : (int) Unique numeric ID of this playlist shortcode instance.

Live Example
Example 1: Custom Playlist Output
Passing a non-empty value to the filter will short-circuit the default output.
function weplugins_custom_playlist( $output, $attr, $instance ) {
    if ( 'false' == $attr['images'] || 'video' == $attr['type'] ) {
        // Custom logic here
    }
    return $output;
}
add_filter( 'post_playlist', 'weplugins_custom_playlist', 10, 3 );

Example 2: Running the Hook
To run the hook, copy the example below.
$var = apply_filters( 'post_playlist', $var, $attr, $instance ); 
if ( !empty( $var ) ) { 
    // everything has led up to this point... 
}

Example 3: Adding and Removing Hook Callback
The following example is for adding a hook callback.
// define the post_playlist callback 
function weplugins_filter_post_playlist( $var, $attr, $instance ) { 
    // make filter magic happen here... 
    return $var; 
}; 
add_filter( 'post_playlist', 'weplugins_filter_post_playlist', 10, 3 );

To remove a hook callback, use the example below.
remove_filter( 'post_playlist', 'weplugins_filter_post_playlist', 10, 3 ); 


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