number-validation

Validate a number with grouped thousands with decimal to the hundreth

Looking for a simple way (Function/RegEx) to validate a number with grouped thousands. Example Numbers: .00 - 999.00 should validate 1,000.00 should validate 100,000.00 etc... should validate 100,000,000,000,000.00 should validate Now I've seen the number_format(), but this formats the number not validates. I wanted to use a RegEx b...