PHP subscript for Chemicals

Question

I'm designing a php sql database for an inventory of chemicals. However, some chemicals have only certain number in subscript. Example.... LaCl₃ - 7 H₂O. I was wondering if there is a way to use a str_replace () to selectively replace certain number. For example, replace all numbers to the right of ANY letter with the subscript. I know how to use str_replace() to replace all numbers with there subscript versions but I don't know how to say ANY character in php.

Answer 1

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