new is_blocked for individual post checking

class-wp-members.php

<?php // do not include this line.  Replace the function is_blocked() in class-wp-members.php with the below:

	/**
	 * Determines if content should be blocked.
	 *
	 * This function was originally stand alone in the core file and
	 * was moved to the WP_Members class in 3.0.
	 *
	 * @since 3.0.0
	 * @since 3.3.0 Added $post_id
	 * @since 3.4.0 Added $is_post_check to allow for individual post checking.
	 *
	 * @global object $post The WordPress Post object.
	 *
	 * @param  int    $post_id
	 * @return bool   $block   true|false
	 */
	function is_blocked( $post_id = false ) {
	
		global $post;
		
		$is_post_check = ( false === $post_id ) ? false : true;
		
		if ( $post || $post_id ) {
		
			$the_post = ( false === $post_id ) ? $post : get_post( $post_id );
 
			$meta = wpmem_get_block_setting( $the_post->ID );
			
			// Backward compatibility for old block/unblock meta.
			if ( ! $meta ) {
				// Check for old meta.
				$old_block   = get_post_meta( $the_post->ID, 'block',   true );
				$old_unblock = get_post_meta( $the_post->ID, 'unblock', true );
				$meta = ( $old_block ) ? 1 : ( ( $old_unblock ) ? 0 : $meta );
			}
	
			// Setup defaults.
			$defaults = array(
				'post_id'    => $the_post->ID,
				'post_type'  => $the_post->post_type,
				'block'      => ( isset( $this->block[ $the_post->post_type ] ) && $this->block[ $the_post->post_type ] == 1 ) ? true : false,
				'block_meta' => $meta,
				'block_type' => ( isset( $this->block[ $the_post->post_type ] ) ) ? $this->block[ $the_post->post_type ] : 0,
			);
	
			/**
			 * Filter the block arguments.
			 *
			 * @since 2.9.8
			 * @since 3.0.0 Moved to is_blocked() in WP_Members object.
			 * @since 3.3.0 Passes $defaults, second argument deprecated.
			 *
			 * @param array $args     $defaults.
			 * @param array $defaults Deprecated 3.3.0.
			 */
			$args = apply_filters( 'wpmem_block_args', $defaults, $defaults );
	
			// Merge $args with defaults.
			$args = ( wp_parse_args( $args, $defaults ) );
	
			if ( $is_post_check || is_single() || is_page() || wpmem_is_rest() ) {	
				switch( $args['block_type'] ) {
					case 1: // If content is blocked by default.
						$args['block'] = ( $args['block_meta'] == '0' ) ? false : $args['block'];
						break;
					case 0 : // If content is unblocked by default.
						$args['block'] = ( $args['block_meta'] == '1' ) ? true : $args['block'];
						break;
				}

			} else {
				$args['block'] = false;
			}

		} else {
			$args = array( 'block' => false );
		}
	
		// Don't block user pages.
		$args['block'] = ( in_array( get_permalink(), $this->user_pages ) ) ? false : $args['block'];

		/**
		 * Filter the block boolean.
		 *
		 * @since 2.7.5
		 *
		 * @param bool  $args['block']
		 * @param array $args {
		 *     An array of arguments used in the function.
		 *
		 *     @type string $post_id
		 *     @type string $post_type
		 *     @type string $block
		 *     @type string $block_meta 
		 *     @tyep string $block_type
		 * }
		 */
		return apply_filters( 'wpmem_block', $args['block'], $args );
	}

example.php

<?php // do not include this line.

// This is an example of how to use wpmem_is_blocked() to
// check if a post ID to see if it is blocked.

add_filter( 'the_title', function( $title ) {
	if ( in_the_loop() ) {
		global $post;	
		if ( wpmem_is_blocked( $post->ID ) ) {
			$title .= " [members only]";
		}
	}
	return $title;
});