Services/AzineEmailOpenTrackingCodeBuilder.php
protected function merge($to, $cc, $bcc)
    {
        if ($to && !is_array($to)) {
            $to = array($to);
        }
        if (!is_array($cc)) {
            $cc = array($cc);
        }
        if (!is_array($bcc)) {
            $bcc = array($bcc);
        }
        $all = array_merge($to, $cc, $bcc);

        return implode(';', $all);
    }
protected function merge($to, $cc, $bcc)
    {
        if ($to && !is_array($to)) {
            $to = array($to);
        }
        if (!is_array($cc)) {
            $cc = array($cc);
        }
        if (!is_array($bcc)) {
            $bcc = array($bcc);
        }
        $all = array_merge($to, $cc, $bcc);

        return implode(';', $all);
    }
protected function merge ( $ to , $ cc , $ bcc ) { if ( $ to && ! is_array ( $ to ) ) { $ to = array ( $ to ) ; } if ( ! is_array ( $ cc ) ) { $ cc = array ( $ cc ) ; } if ( ! is_array ( $ bcc ) ) { $ bcc = array ( $ bcc ) ; } $ all = array_merge ( $ to , $ cc , $ bcc ) ; return implode ( ';' , $ all ) ; }
concatenate all recipients into an array and implode with ';' to a string.

@param string|array $to
@param string|array $cc
@param string|array $bcc

@return string
concatenate all recipients into an array and implode with ; to a string .