pre_get_available_post_mime_types

apply_filters('pre_get_available_post_mime_types') is found 1 times:

• /wp-includes/post.php line 8266

  	 *
  	 * @param string[]|null $mime_types An array of MIME types. Default null.
  	 * @param string        $type       The post type name. Usually 'attachment' but can be any post type.
  	 */
  	$mime_types = apply_filters( 'pre_get_available_post_mime_types', null, $type );
  
  	if ( ! is_array( $mime_types ) ) {
  		$mime_types = $wpdb->get_col( $wpdb->prepare( "SELECT DISTINCT post_mime_type FROM $wpdb->posts WHERE post_type = %s AND post_mime_type != ''", $type ) );
  	}
  
  	// Remove nulls from returned $mime_types.
  

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