Question

How to validate a 10-digit standard 10 digit phone number using RegEx in Swift

Answer 1

import Foundation

let phoneNumbers = [
    "333-555-1234",
    "(333)-555-1234",
    "333 555 1234",
    "333.555.1234",
    "+91 (333) 555-1234"
]

let pattern = "^(\\+\\d{1,2}\\s)?\\(?\\d{3}\\)?[\\s.-]?\\d{3}[\\s.-]?\\d{4}$"

for phoneNumber in phoneNumbers {
    let regex = try! NSRegularExpression(pattern: pattern)
    let range = NSRange(location: 0, length: phoneNumber.utf16.count)
    
    if regex.firstMatch(in: phoneNumber, options: [], range: range) != nil {
        print("Valid phone number format")
    } else {
        print("Invalid phone number format")
    }
}



/*
run:

Valid phone number format
Valid phone number format
Valid phone number format
Valid phone number format
Valid phone number format

*/

 

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