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External Data Source

Source

Regular Expression
^(?!\u00a2) #Don't allow cent symbol \p{Sc}? #optional unicode currency symbols (?!0,?\d) #don't allow leading zero if 1 or more unit (?:\d{1,3} # 1 to 3 digits (?:([, .])\d{3})? # if there is a separator it must be followed by 3 digits (?:\1\d{3})* # if the is more than two groups the same separtor must but used, it must be followed by 3 digits |(?:\d+)) # more than 3 digit with no comma separator ((?!\1)[,.]\d{2})?$ # option cents