您好，请帮我纠正我的正则表达式以检测数字

Question

[a-z\%\/\-\(\)\s]?\d{3}[a-z\%\/\-\(\)\s]?\d{3}[a-z\%\/\-\(\)\s]?\d{4}[a-z\%\/\-\(\)\s]?

My above regex is what I've come up with. But I need something that can detect a few more patterns of numbers, and then, once the numbers are matched, remove all other texts, letters, chars in the line but the numbers. below is my regex.

I really need help with this been looking forever.

https://www.regex101.com/r/hT5eD9/1

FIXED

Answer 1

You can take this approach:

Match 1 or more non-digits that are followed by digits on either side to detect non-digits in between digits and remove them.

Using this regex:

(?<=\d)[^\d
]+(?=\d)

RegEx Demo

Code:

$result = preg_replace("~(?<=\\d)[^\\d\
]+(?=\\d)~", '', $input);