$re = '/ ?(\d+.\d+|\d+)(-)(\d+.\d+|\d+)/';
$str = 'FAST.65
FAST.65-160
<114
>289
<=152
>=107
10.9
111.11
12.20
LESS THAN 0.1
LESS THAN 5
LESS THAN 9999
< 0.1
< 999
< 99999.99
<5
< 5
<5.55
<= 6
LE 6
<=666.666
LT 6
LT 6.666
';
preg_match($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