Flutter – Validate a phone number using Regex

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You could make the first part optional matching either a + or 0 followed by a 9. Then match 10 digits:

^(?:[+0]9)?[0-9]{10}$
  • ^ Start of string
  • (?:[+0]9)? Optionally match a + or 0 followed by 9
  • [0-9]{10} Match 10 digits
  • $ End of string

Regex demo

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Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)