$re = '/\[TYPECODE #1\](NCHG)\[MARF#\][^ ].*?\[EREF#\][^ ].*?\[IREF#\][^ ].*?\[RTRN#]\s.*?\[DR #1\][^ ]/';
$str = '[TYPECODE #1]NCHG[MARF#]006-0030705-000 [IBAN#] [NAME#] [EREF#]006-0030705-00020/07/2015 [IREF#]006-0030705-00020/07/2015 [PREF#] [SVCL#] [CSID#] [RTRN#] [OCMT#] [OTHR#] [ORDT#] [REMI#] [BIC#][DR #1]3.00';
preg_match($re, $str, $matches, PREG_OFFSET_CAPTURE, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php