$re = '/^(?<datetime1>\d+\/\d+\/\d+\s+\d+:\d+:\d+)\s+(?<field1>\d+)\s+(?<field2>\d+)\s+(?<field3>\d+)\s+(?<field4>\d+)\s+(?<field5>\d+)\s+(?<field6>\d+)\s+(?<field7>\S+)\s+(?<datetime2>\d+-\d+-\d+\s+\d+:\d+:\d+)/m';
$str = '18/06/28 14:12:07 250 219561 711914 72864 0 784778 - 18-06-28 14:08:43';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($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