Phone number validation regular expression consist one plus sign in start and preceding digits

Question

I am trying to validate phone number but cannot. My requirement is phone number consist only of digits and + (plus symbol). The + can be only the first character. For example: +123456489 I am using this regular expression but it is not working: ``` /^\+(?:[0-9]??)$/ ``` Thanks in advance.

Accepted Answer

I'd use this instead:

```
^\+?\d*$
```

Matches your + at the start, then any digit, dash, space, dot, or brackets.

See it in action: http://regex101.com/r/mS9gD7

Phone number validation regular expression consist one plus sign in start and preceding digits

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