php - regex - how to extract a number with decimal (dot and comma) from a string (e.g. 1,120.01)?

Question

how to extract a number with decimal (dot and comma) from a string (e.g. 1,120.01) ? I have a regex but doesn\'t seem to play well with commas

preg_match(\'/([0-         


        

Answer 1

You can use this regex: -

/((?:[0-9]+,)*[0-9]+(?:\.[0-9]+)?)/

Explanation: -

/(
    (?:[0-9]+,)*   # Match 1 or more repetition of digit followed by a `comma`. 
                   # Zero or more repetition of the above pattern.
    [0-9]+         # Match one or more digits before `.`
    (?:            # A non-capturing group
        \.         # A dot
        [0-9]+     # Digits after `.`
    )?             # Make the fractional part optional.
 )/