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Surya sasidhar
Surya sasidhar

Reputation: 30323

validation on telephone numbers?

in my application i want to validate the telephone numbers, how can i write regular expression for telephone numbers like..

040-23357399 or 04023357399 91-40-23357399 or 914023357399 08518-2814655 or 085182814655 91-8518-2814655 or 9185182814655

this is my phone numbers how can i write the expression for this

Upvotes: 1

Views: 520

Answers (2)

Joel Coehoorn
Joel Coehoorn

Reputation: 416121

Validation implies rejection, and your users will find that annoying. A better option is to accept as much as possible by first stripping all non-digits from the string, and then checking the length and initial digits vs a few simple rules:

  • If 11 digits and starts with a 1, strip first digit.
  • If 10 digits accept if it starts with 2-9.
  • If 12-14 digits accept if starts with a valid country code.
  • Rreject everything else.

This passes a lot more through than trying to force your users into a specific format, and makes for simpler, faster validation code. Then you just format it nicely whenever you re-display it.

Upvotes: 2

HotTester
HotTester

Reputation: 5778

For more refer this

Another good link is this

Also check this regular expression:

^\D?(\d{3})\D?\D?(\d{3})\D?(\d{4})$

Upvotes: 1

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