Regular expression for validating phone number, your answer

Thank you for your interest in this question. This is the best way to go. Custom Filters release announcement.

You can use the library libphonenumber from Google. Please format your answer use four spaces as indents for a code block. Hope this also helps someone. This reg ex is suitable for international phone numbers and multiple formats of mobile cell numbers. Kondal I'm curious about the input you're using to make it fail.

How to use Regular expression for validating Phone Numbers in .net

This one comes pretty close to most international phone number formats. Use a specialized library. While it could be shortened a bit, I decided to include each code independently. Consider adding a sentence or two to explain your answer. What with different structures in different countries and extensions, its a very difficult problem.

Thank you for your remark. Usually users have trouble with forms that enforce strict formatting rules, dating my I prefer user to fill in the number and the format it in the display or before saving it to the database. Would you like to answer one of these unanswered questions instead?

Regular expression for validating Phone Numbers in .net

Regular expression for validating phone number
  • There are too many regex variants to validate a phone number.
  • We've both learned something.
  • And too much validation can be a bad thing anyway.

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Try this, it works for me. Setup a private space for you and your coworkers to ask questions and share information. Most importantly, this regex does not mean the number is valid - each country defines its own internal numbering plan. This only ensures that the country code is valid.

Your Answer

Doing a quick sanity check on the number ensures that an obviously bogus call does not block a valuable channel. Please make sure to include explanations with your answer. Just because a problem has already been solved doesn't mean one should give up on the learning opportunity it presents.

Regular expression for validating phone number

More Regular Expression Checks

Modified Eric's regular expression - added a list of all country codes got them from xxxdepy Github. My regular expression does not include grouping to extract the digit groups, but it can be modified to include those. What regular expression will match valid international phone numbers?

This led me in the right direction. There are many variations possible for this problem. So this should be quite safe to relay on. Did you use a tool to generate that explanation? Secondly, your validation is incorrect.

Working on a solution first teaches more than simply Googling for it. It contains all current country codes and codes reserved for future use. My point is that it's not part of the phone number. Returns true if it matches and false if it fails Ref.

This is a further optimisation. As for this specific problem i would change the regex from. Although this post is an old but want to leave my contribuition. Combined with fezfox's improvements?

Try this one - it includes validation for international formats too. Also this will return the Country, social dating apps singapore Area and Provider. That is wrong because it doesn't account for the length variability across the world. The phone call can go anywhere in the world. The last question mark is to make country code optional.

Is the correct format for matching a generic international phone number. Note that if you enter numbers in this format into your mobile phone address book, you may successfully call any number in your address book no matter where you travel. Would it actually match the backslash?

There are cases where users i. Perhaps the easiest one compare to several others. My opinion about regexes is that, if you are giving a regex to someone, always accompany it with an explanation, or the regex is worthless. Although it may work, it is important to explain how and why in order to have complete and relevant information.

Regular expression for validating phone number

It will help user to correct their format on input tag. There may be dashes, spaces, dots or no spaces between country code, area code and the rest of the number. Google released an open source lib for this. Regardless of the way the phone number is entered, the capture groups can be used to breakdown the phone number so you can process it in your code. So, your regex will pass the number even though that is not a valid phone number.

  1. This is a more comprehensive version that will match as much as I can think of as well as give you group matching for country, region, first, and last.
  2. By far the best answer and most complete.
  3. If you want to deepen in regex for a custom expression, you can review this documentation.

Related Posts

While this code snippet may answer the question, it doesn't provide any context to explain how or why. Here is a regex for the following most common phone number scenarios. There is no need to escape dot.

Regular expression for validating phone number

Adding up an example using above mentioned solutions on jsfiddle.

Regular expression for validating phone number

For other countries, replace the international access code the at the beginning of the regex with whatever is appropriate for that country's dialing plan. Email Required, but never shown. Here's a fairly compact one I created.

Regular Expression examples

Just wanted to add a solution specifically for selecting non-local phone numbers and types. This is a very loose option and I prefer to keep it this way, mostly I use it in registration forms where the users need to add their phone number. For Dutch phone numbers as well. If you using on input tag than this code will help you. Basically don't match all zeros.

You should however be format hinting for user input anyway. Do you think that the question mark is not necessary in? For land lines, replace the plus with the international access code for the country you are dialing from. Will your application be used by someone with a phone number from outside North America?

If so, dating humboldt I am not sure how do I do that. Doesn't work for Cyprus numbers. Parsing phone numbers is hard. This is what I was going to suggest.

Regular expression for validating phone number
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