Get an array containing of all the log IDs for a particular download using the EDD Logging Class in Easy Digital Downloads.

gistfile1.php

<?php

/**
 * Get an array of all the log IDs using the EDD Logging Class
 * 
 * @return array if logs, null otherwise
 * @param $download_id Download's ID
*/
function get_log_ids( $download_id = '' ) {

	// Instantiate a new instance of the class
	$edd_logging = new EDD_Logging;

	// get logs for this download with type of 'sale'
	$logs = $edd_logging->get_logs( $download_id, 'sale' );

	// if logs exist
	if ( $logs ) {
		// create array to store our log IDs into
		$log_ids = array();
		// add each log ID to the array
		foreach ( $logs as $log ) {
			$log_ids[] = $log->ID;
		}
		// return our array
		return $log_ids;
	}
	
	return null;

}