Regular expression to validate US phone numbers? [duplicate]

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duplicateexpressionvalidateregular
90%

1 This may be a duplicate, but please link to the previous answers before marking the post. – mindtonic Mar 24 '15 at 12:23 ,(Though it's probably best to explicitly demonstrate the format that you expect phone numbers to be in.), What's the proper etiquette when joining an audio conference where people are already talking? , What is an expedience of sci-fi gliders? these machines flying near the very ground

The easiest way to match both

^ \([0 - 9] {
   3
}\)[0 - 9] {
   3
} - [0 - 9] {
   4
}
$
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88%

Get Regular Expressions Cookbook, 2nd Edition now with O’Reilly online learning.,Recipe 4.3 shows how to validate international phone numbers.,So far, the regular expression matches any 10-digit number. If you want to limit matches to valid phone numbers according to the North American Numbering Plan, here are the basic rules:,Two simple changes allow the previous regular expressions to match phone numbers within longer text:

^ \( ? ([0 - 9] {
   3
})\) ? [-.●] ? ([0 - 9] {
   3
})[-.●] ? ([0 - 9] {
   4
}) $
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72%

For many applications that deal with strings or that parse large blocks of text, regular expressions are an indispensable tool.,The regular expression pattern to identify in the text.,Add extracted strings to a collection in order to generate a report.,The text to parse for the regular expression pattern.

Assume that a mailing list contains names that sometimes include a title (Mr., Mrs., Miss, or Ms.) along with a first and last name. If you do not want to include the titles when you generate envelope labels from the list, you can use a regular expression to remove the titles, as the following example illustrates.

using System;
using System.Text.RegularExpressions;

public class Example {
   public static void Main() {
      string pattern = "(Mr\\.? |Mrs\\.? |Miss |Ms\\.? )";
      string[] names = {
         "Mr. Henry Hunt",
         "Ms. Sara Samuels",
         "Abraham Adams",
         "Ms. Nicole Norris"
      };
      foreach(string name in names)
      Console.WriteLine(Regex.Replace(name, pattern, String.Empty));
   }
}
// The example displays the following output:
//    Henry Hunt
//    Sara Samuels
//    Abraham Adams
//    Nicole Norris
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SyntaxError: invalid regular expression flag "x",JavaScript error reference, See the table above for the six valid regular expression flags that are allowed in JavaScript. ,There are only six valid regular expression flags.

SyntaxError: Syntax error in regular expression(Edge)
SyntaxError: invalid regular expression flag "x"(Firefox)
SyntaxError: Invalid regular expression flags(Chrome)
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75%

^ [+] * [(] {
   0,
   1
} [0 - 9] {
   1,
   4
} [)] {
   0,
   1
} [-\s\. / 0 - 9] * $
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40%

Phone number validation is often carried out by using regular expressions; for example, this regular expression validates Dutch phone numbers:,No regular expression required. And no need to know the phone number requirements for the region.,In this case, intl-tel-input not only makes it easier for users to enter phone numbers, but also supplies on-the-fly validation of those numbers.,This same (and still-invalid) phone number is also used during two-factor authentication:

Using a library such as libphonenumber means that you don’t need to keep track of country codes and national number restrictions and everything else required to validate a phone number. Instead, you let the programming library worry about those things: all you have to do is make a function call. For example, the following libphonenumber function returns a Boolean value (true or false) that tells you whether a given phone number (number) is valid for the specified locale (regionCode):

func IsValidNumber(number * PhoneNumber) bool {
   return IsValidNumberForRegion(number, regionCode)
}
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Regular Expressions or Regex (in short) is an API for defining String patterns that can be used for searching, manipulating, and editing a string in Java. Email validation and passwords are few areas of strings where Regex is widely used to define the constraints. Regular Expressions are provided under java.util.regex package. This consists of 3 classes and 1 interface.,Here we will be discussing out two examples, one for India and the other be standard validating over for all countries. Hence, the cases are as follows:,Writing code in comment? Please use ide.geeksforgeeks.org, generate link and share the link here.,The numbers which satisfy the validation are shown in illustrations as follows:

Illustration:

Input: Enter Mobile Number: 7873923408
Output: Valid Mobile Number
Input: Enter Mobile Number: 5678729234
Output: Invalid Mobile Number
Output
Valid Number
Invalid Number

 

Input: Enter Mobile Number: +1 212 555 - 3458(USA)
Output: Valid Mobile Number
Input: Enter Mobile Number: +4934 351 125 - 3456
Output: Invalid Mobile Number
Output
Valid Number
Invalid Number
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