$re = '/from\s+(\d+).*([a-zA-Z0-9]{10})\s+at\s+(.*)/m';
$str = 'Cash In Tk 500.00 from 01789788881 successful. Fee Tk 0.00. Balance Tk 4,145.08. TrxID 6E63D2OS4R at 06/05/2019 20:24';
preg_match_all($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