$re = '/(~|^)([^~]*?ABCD.*?#.*?)(~|$)/';
$str = 'fshjk#3~dhaj#NON-LOCAL~dhahdate#64030~kjqiwDATE2#64030`75:~kwokdNUM#000000010652~ncdj#158672694~pwkd#410~djakj#147~xkiww#322285781~lowqABCD#1025133646~jdoi#~pwdljae#25133648~pqeidjdt#04212016';
preg_match_all($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