Regex first and last characters must be a number -

could please me come correct regex match string starts , ends digit. string between these 2 digits may have , , . , digits only.

i have tried:

([0-9.,]+) 

strings match:

,5,190 ,5,190, 

output should 5,190.

alright let's take definition bit bit:

• string starting number.

  [0-9] or \d same thing.

• string may have , , . , consist numbers.

  `[\d,.]*

• string ends number.

  \d

which gives \d[\d,.]*\d. try it, , please try understand before moving on.