Regular Expression Validation For Indian Phone Number and Mobile number

Question

I want to validate Indian phone numbers as well as mobile numbers. The format of the phone number and mobile number is as follows:

For land Line number

Answer 1

For both mobile & fixed numbers: (?:\s+|)((0|(?:(\+|)91))(?:\s|-)*(?:(?:\d(?:\s|-)*\d{9})|(?:\d{2}(?:\s|-)*\d{8})|(?:\d{3}(?:\s|-)*\d{7}))|\d{10})(?:\s+|)

Explaination:

(?:\s+|)                    // leading spaces
((0|(?:(\+|)91))            // prefixed 0, 91 or +91
(?:\s|-)*                   // connecting space or dash (-)
(?:(?:\d(?:\s|-)*\d{9})|    // 1 digit STD code & number with connecting space or dash
(?:\d{2}(?:\s|-)*\d{8})|    // 2 digit STD code & number with connecting space or dash
(?:\d{3}(?:\s|-)*\d{7})|    // 3 digit STD code & number with connecting space or dash
\d{10})                     // plain 10 digit number
(?:\s+|)                    // trailing spaces

I've tested it on following text

9775876662
0 9754845789
0-9778545896
+91 9456211568
91 9857842356
919578965389

0359-2595065
0352 2459025
03598245785
07912345678
01123456789
sdasdcsd
+919898101353
dasvsd0 
+91 dacsdvsad
davsdvasd

0112776654