Extract floating point numbers from a string in PHP

Question

I would like to convert a string into floating numbers. For example

152.15 x 12.34 x 11mm

into

152.15, 12.34 and 11
         


        

Answer 1

preg_match_all("/\d*\.?\d+|\d+/", "152.15mmx12.34mm x .11mm", $matches);

This example supports numbers like .11 as well, since they are valid numbers. $matches[0] will contain 152.15, 12.34 and 0.11, given that you type cast the result to float. If you don't 0.11 will appear as .11. I would type cast using array_map.

$values = array_map("floatval", $matches[0]); 

You can use the values for anything math without type casting them though. casting is just needed when printing them directly.