Using Regular Expression in Php in case of checking phone number

Question

I have a variable which has to allow only numbers , dashes and parenthesis, there is no particular length for phone number , And the validation must be done in php , no javascript allowed,

EDIT Just wanted to allow spaces too to the regular expressions....

Thanks

No particular length? so it isn't going to be a strictly US format? — Ben Roux
– Ben Roux, Commented Jun 23, 2012 at 8:02
@BenRoux and if not, which countries' formats are allowed? Samantha, your regex will probably have to try and match each country separately. — Scott Stevens
– Scott Stevens, Commented Jun 23, 2012 at 8:06
actually i want a variable which just needs to be validated, and the variable shouldnt contain anything other than dashes, paranthesis and numbers — Abida
– Abida, Commented Jun 23, 2012 at 8:13

General Grievance · Accepted Answer · 2023-05-02 21:24:35Z

2

So, I am a bit confused about the question here, but I'll give it a shot and hopefully it gets you to where you need to be.

This will allow anything containing the specified characters. (303)123-4567 will be allowed. As will 32084248())(21324234--234242-23- (clearly not a phone number)

if( preg_match("/^[0-9() -]+$/", $number) {
    // Only numbers, parens and hypens allowed
}

If you want to make the regex a bit more strict, we can limit to US-style numbers:

if( preg_match("/^\d{0,3}-?(?:\(\d{3}\)|\d{3})-?\d{3}-?\d{4}$/", $number) {
    // US Phone number
}

This will only allow US style numbers with an optional country code.

edited May 2, 2023 at 21:24

General Grievance

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answered Jun 23, 2012 at 8:12

Ben Roux

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4 Comments

Abida Over a year ago

hey ben can u tell how to allow spaces too in this

Ben Roux Over a year ago

Sure thing. Which should I add it to? the first or second?

Abida Over a year ago

can u do it for both ? but now priority is first one :)

Ben Roux Over a year ago

THe first one is fixed. The regex there may look confusing, but all it is saying is only allow characters inside the brackets. Simply putting a space inside of them adds your solution

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