使用正则表达式匹配多个术语

Question

This is response to my previous thread ( Matching data from file with regex )

However it was matching only one keyword "DATA", but the file contains 20 others in the same format, but I only want to pull out 3 specific ones including "DATA", which "STAT", "REG", "NET"

Is there anyway match these specific terms?

Thank you in advance!

Answer 1

Assuming this is the one you're using now:

preg_match_all('/^\s*.?"(?:DATA|STAT|REG|NET)" (\d+)\.(\d+)\s*$/m', $str, $matches);

Simply by grouping the different alternatives in a subpattern (seperated by pipes) you can easily match different values. Note that the?: symbol in the beginning of the parantheses ignores capture for that subpattern.